DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Measurements of dielectron production in Au + Au collisions at s N N = 200 GeV from the STAR experiment

Abstract

We report on measurements of dielectron (e⁺e⁻) production in Au+Au collisions at a center-of-mass energy of 200 GeV per nucleon-nucleon pair using the STAR detector at RHIC. Systematic measurements of the dielectron yield as a function of transverse momentum (pT) and collision centrality show an enhancement compared to a cocktail simulation of hadronic sources in the low invariant-mass region (Mee < 1GeV/c2). This enhancement cannot be reproduced by the ρ-meson vacuum spectral function. In minimum-bias collisions, in the invariant-mass range of 0.30 – 0.76GeV/c², integrated over the full pT acceptance, the enhancement factor is 1.76±0.06(stat.)±0.26(sys.)±0.29(cocktail). The enhancement factor exhibits weak centrality and pT dependence in STAR's accessible kinematic regions, while the excess yield in this invariant-mass region as a function of the number of participating nucleons follows a power-law shape with a power of 1.44±0.10. Models that assume an in-medium broadening of the ρ-meson spectral function consistently describe the observed excess in these measurements. In addition, we report on measurements of ω- and Φ-meson production through their e⁺e⁻ decay channel. These measurements show good agreement with Tsallis blast-wave model predictions, as well as, in the case of the Φ meson, results through its K⁺K⁻ decay channel. In the intermediate invariant-massmore » region (1.1 < Mee < 3GeV/c²), we investigate the spectral shapes from different collision centralities. Physics implications for possible in-medium modification of charmed hadron production and other physics sources are discussed.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Org.:
STAR Collaboration
OSTI Identifier:
1221751
Alternate Identifier(s):
OSTI ID: 1212493
Report Number(s):
BNL-108358-2015-JA
Journal ID: ISSN 0556-2813; PRVCAN; R&D Project: PO 004; KB0202012
Grant/Contract Number:  
2014CB845400; 2015CB856900; NRF-2012004024
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C. Nuclear Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 2; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider

Citation Formats

Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Alford, J., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Banerjee, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Bouchet, J., Brandin, A. V., Bunzarov, I., Burton, T. P., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Campbell, J. M., Cebra, D., Cervantes, M. C., Chakaberia, I., Chaloupka, P., Chang, Z., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Contin, G., Crawford, H. J., Das, S., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., di Ruzza, B., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Engelage, J., Eppley, G., Esha, R., Evdokimov, O., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Z., Filip, P., Fisyak, Y., Flores, C. E., Fulek, L., Gagliardi, C. A., Garand, D., Geurts, F., Gibson, A., Girard, M., Greiner, L., Grosnick, D., Gunarathne, D. S., Guo, Y., Gupta, S., Gupta, A., Guryn, W., Hamad, A., Hamed, A., Haque, R., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, X., Huang, H. Z., Huck, P., Humanic, T. J., Igo, G., Jacobs, W. W., Jang, H., Jiang, K., Judd, E. G., Jung, K., Kabana, S., Kalinkin, D., Kang, K., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Khan, Z. H., Kikola, D. P., Kisel, I., Kisiel, A., Kochenda, L., Koetke, D. D., Kollegger, T., Kosarzewski, L. K., Kraishan, A. F., Kravtsov, P., Krueger, K., Kulakov, I., Kumar, L., Kycia, R. A., Lamont, M. A. C., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, X., Li, C., Li, W., Li, Z. M., Li, Y., Li, X., Lisa, M. A., Liu, F., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, X., Ma, Y. G., Ma, G. L., Ma, L., Ma, R., Magdy, N., Majka, R., Manion, A., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., Meehan, K., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Morozov, D., Mustafa, M. K., Nandi, B. K., Nasim, Md., Nayak, T. K., Nigmatkulov, G., Nogach, L. V., Noh, S. Y., Novak, J., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Okorokov, V., Olvitt, D., Page, B. S., Pak, R., Pan, Y. X., Pandit, Y., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Peterson, A., Pile, P., Planinic, M., Pluta, J., Poljak, N., Poniatowska, K., Porter, J., Posik, M., Poskanzer, A. M., Pruthi, N. K., Putschke, J., Qiu, H., Quintero, A., Ramachandran, S., Raniwala, R., Raniwala, S., Ray, R. L., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Roy, A., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Sakrejda, I., Salur, S., Sandweiss, J., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, W. B., Schmitz, N., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, M. K., Sharma, B., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Sikora, R., Simko, M., Skoby, M. J., Smirnov, D., Smirnov, N., Song, L., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stepanov, M., Stock, R., Strikhanov, M., Stringfellow, B., Sumbera, M., Summa, B., Sun, X., Sun, Z., Sun, X. M., Sun, Y., Surrow, B., Svirida, N., Szelezniak, M. A., Tang, A. H., Tang, Z., Tarnowsky, T., Tawfik, A. N., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Trzeciak, B. A., Tsai, O. D., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., van Nieuwenhuizen, G., Vandenbroucke, M., Varma, R., Vasiliev, A. N., Vertesi, R., Videbæk, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Vossen, A., Wang, G., Wang, Y., Wang, F., Wang, Y., Wang, H., Wang, J. S., Webb, J. C., Webb, G., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y. F., Xiao, Z. G., Xie, W., Xin, K., Xu, Q. H., Xu, Z., Xu, H., Xu, N., Xu, Y. F., Yang, Q., Yang, Y., Yang, S., Yang, Y., Yang, C., Ye, Z., Yepes, P., Yi, L., Yip, K., Yoo, I. -K., Yu, N., Zbroszczyk, H., Zha, W., Zhang, X. P., Zhang, J., Zhang, Y., Zhang, J., Zhang, J. B., Zhang, S., Zhang, Z., Zhao, J., Zhong, C., Zhou, L., Zhu, X., Zoulkarneeva, Y., and Zyzak, M. Measurements of dielectron production in Au + Au collisions at sNN=200 GeV from the STAR experiment. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.92.024912.
Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Alford, J., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Banerjee, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Bouchet, J., Brandin, A. V., Bunzarov, I., Burton, T. P., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Campbell, J. M., Cebra, D., Cervantes, M. C., Chakaberia, I., Chaloupka, P., Chang, Z., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Contin, G., Crawford, H. J., Das, S., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., di Ruzza, B., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Engelage, J., Eppley, G., Esha, R., Evdokimov, O., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Z., Filip, P., Fisyak, Y., Flores, C. E., Fulek, L., Gagliardi, C. A., Garand, D., Geurts, F., Gibson, A., Girard, M., Greiner, L., Grosnick, D., Gunarathne, D. S., Guo, Y., Gupta, S., Gupta, A., Guryn, W., Hamad, A., Hamed, A., Haque, R., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, X., Huang, H. Z., Huck, P., Humanic, T. J., Igo, G., Jacobs, W. W., Jang, H., Jiang, K., Judd, E. G., Jung, K., Kabana, S., Kalinkin, D., Kang, K., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Khan, Z. H., Kikola, D. P., Kisel, I., Kisiel, A., Kochenda, L., Koetke, D. D., Kollegger, T., Kosarzewski, L. K., Kraishan, A. F., Kravtsov, P., Krueger, K., Kulakov, I., Kumar, L., Kycia, R. A., Lamont, M. A. C., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, X., Li, C., Li, W., Li, Z. M., Li, Y., Li, X., Lisa, M. A., Liu, F., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, X., Ma, Y. G., Ma, G. L., Ma, L., Ma, R., Magdy, N., Majka, R., Manion, A., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., Meehan, K., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Morozov, D., Mustafa, M. K., Nandi, B. K., Nasim, Md., Nayak, T. K., Nigmatkulov, G., Nogach, L. V., Noh, S. Y., Novak, J., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Okorokov, V., Olvitt, D., Page, B. S., Pak, R., Pan, Y. X., Pandit, Y., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Peterson, A., Pile, P., Planinic, M., Pluta, J., Poljak, N., Poniatowska, K., Porter, J., Posik, M., Poskanzer, A. M., Pruthi, N. K., Putschke, J., Qiu, H., Quintero, A., Ramachandran, S., Raniwala, R., Raniwala, S., Ray, R. L., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Roy, A., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Sakrejda, I., Salur, S., Sandweiss, J., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, W. B., Schmitz, N., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, M. K., Sharma, B., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Sikora, R., Simko, M., Skoby, M. J., Smirnov, D., Smirnov, N., Song, L., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stepanov, M., Stock, R., Strikhanov, M., Stringfellow, B., Sumbera, M., Summa, B., Sun, X., Sun, Z., Sun, X. M., Sun, Y., Surrow, B., Svirida, N., Szelezniak, M. A., Tang, A. H., Tang, Z., Tarnowsky, T., Tawfik, A. N., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Trzeciak, B. A., Tsai, O. D., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., van Nieuwenhuizen, G., Vandenbroucke, M., Varma, R., Vasiliev, A. N., Vertesi, R., Videbæk, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Vossen, A., Wang, G., Wang, Y., Wang, F., Wang, Y., Wang, H., Wang, J. S., Webb, J. C., Webb, G., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y. F., Xiao, Z. G., Xie, W., Xin, K., Xu, Q. H., Xu, Z., Xu, H., Xu, N., Xu, Y. F., Yang, Q., Yang, Y., Yang, S., Yang, Y., Yang, C., Ye, Z., Yepes, P., Yi, L., Yip, K., Yoo, I. -K., Yu, N., Zbroszczyk, H., Zha, W., Zhang, X. P., Zhang, J., Zhang, Y., Zhang, J., Zhang, J. B., Zhang, S., Zhang, Z., Zhao, J., Zhong, C., Zhou, L., Zhu, X., Zoulkarneeva, Y., & Zyzak, M. Measurements of dielectron production in Au + Au collisions at sNN=200 GeV from the STAR experiment. United States. https://doi.org/10.1103/PhysRevC.92.024912
Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Alford, J., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Banerjee, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Bouchet, J., Brandin, A. V., Bunzarov, I., Burton, T. P., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Campbell, J. M., Cebra, D., Cervantes, M. C., Chakaberia, I., Chaloupka, P., Chang, Z., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Contin, G., Crawford, H. J., Das, S., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., di Ruzza, B., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Engelage, J., Eppley, G., Esha, R., Evdokimov, O., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Z., Filip, P., Fisyak, Y., Flores, C. E., Fulek, L., Gagliardi, C. A., Garand, D., Geurts, F., Gibson, A., Girard, M., Greiner, L., Grosnick, D., Gunarathne, D. S., Guo, Y., Gupta, S., Gupta, A., Guryn, W., Hamad, A., Hamed, A., Haque, R., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, X., Huang, H. Z., Huck, P., Humanic, T. J., Igo, G., Jacobs, W. W., Jang, H., Jiang, K., Judd, E. G., Jung, K., Kabana, S., Kalinkin, D., Kang, K., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Khan, Z. H., Kikola, D. P., Kisel, I., Kisiel, A., Kochenda, L., Koetke, D. D., Kollegger, T., Kosarzewski, L. K., Kraishan, A. F., Kravtsov, P., Krueger, K., Kulakov, I., Kumar, L., Kycia, R. A., Lamont, M. A. C., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, X., Li, C., Li, W., Li, Z. M., Li, Y., Li, X., Lisa, M. A., Liu, F., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, X., Ma, Y. G., Ma, G. L., Ma, L., Ma, R., Magdy, N., Majka, R., Manion, A., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., Meehan, K., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Morozov, D., Mustafa, M. K., Nandi, B. K., Nasim, Md., Nayak, T. K., Nigmatkulov, G., Nogach, L. V., Noh, S. Y., Novak, J., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Okorokov, V., Olvitt, D., Page, B. S., Pak, R., Pan, Y. X., Pandit, Y., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Peterson, A., Pile, P., Planinic, M., Pluta, J., Poljak, N., Poniatowska, K., Porter, J., Posik, M., Poskanzer, A. M., Pruthi, N. K., Putschke, J., Qiu, H., Quintero, A., Ramachandran, S., Raniwala, R., Raniwala, S., Ray, R. L., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Roy, A., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Sakrejda, I., Salur, S., Sandweiss, J., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, W. B., Schmitz, N., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, M. K., Sharma, B., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Sikora, R., Simko, M., Skoby, M. J., Smirnov, D., Smirnov, N., Song, L., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stepanov, M., Stock, R., Strikhanov, M., Stringfellow, B., Sumbera, M., Summa, B., Sun, X., Sun, Z., Sun, X. M., Sun, Y., Surrow, B., Svirida, N., Szelezniak, M. A., Tang, A. H., Tang, Z., Tarnowsky, T., Tawfik, A. N., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Trzeciak, B. A., Tsai, O. D., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., van Nieuwenhuizen, G., Vandenbroucke, M., Varma, R., Vasiliev, A. N., Vertesi, R., Videbæk, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Vossen, A., Wang, G., Wang, Y., Wang, F., Wang, Y., Wang, H., Wang, J. S., Webb, J. C., Webb, G., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y. F., Xiao, Z. G., Xie, W., Xin, K., Xu, Q. H., Xu, Z., Xu, H., Xu, N., Xu, Y. F., Yang, Q., Yang, Y., Yang, S., Yang, Y., Yang, C., Ye, Z., Yepes, P., Yi, L., Yip, K., Yoo, I. -K., Yu, N., Zbroszczyk, H., Zha, W., Zhang, X. P., Zhang, J., Zhang, Y., Zhang, J., Zhang, J. B., Zhang, S., Zhang, Z., Zhao, J., Zhong, C., Zhou, L., Zhu, X., Zoulkarneeva, Y., and Zyzak, M. Mon . "Measurements of dielectron production in Au + Au collisions at sNN=200 GeV from the STAR experiment". United States. https://doi.org/10.1103/PhysRevC.92.024912. https://www.osti.gov/servlets/purl/1221751.
@article{osti_1221751,
title = {Measurements of dielectron production in Au + Au collisions at sNN=200 GeV from the STAR experiment},
author = {Adamczyk, L. and Adkins, J. K. and Agakishiev, G. and Aggarwal, M. M. and Ahammed, Z. and Alekseev, I. and Alford, J. and Aparin, A. and Arkhipkin, D. and Aschenauer, E. C. and Averichev, G. S. and Banerjee, A. and Bellwied, R. and Bhasin, A. and Bhati, A. K. and Bhattarai, P. and Bielcik, J. and Bielcikova, J. and Bland, L. C. and Bordyuzhin, I. G. and Bouchet, J. and Brandin, A. V. and Bunzarov, I. and Burton, T. P. and Butterworth, J. and Caines, H. and Calderón de la Barca Sánchez, M. and Campbell, J. M. and Cebra, D. and Cervantes, M. C. and Chakaberia, I. and Chaloupka, P. and Chang, Z. and Chattopadhyay, S. and Chen, J. H. and Chen, X. and Cheng, J. and Cherney, M. and Christie, W. and Contin, G. and Crawford, H. J. and Das, S. and De Silva, L. C. and Debbe, R. R. and Dedovich, T. G. and Deng, J. and Derevschikov, A. A. and di Ruzza, B. and Didenko, L. and Dilks, C. and Dong, X. and Drachenberg, J. L. and Draper, J. E. and Du, C. M. and Dunkelberger, L. E. and Dunlop, J. C. and Efimov, L. G. and Engelage, J. and Eppley, G. and Esha, R. and Evdokimov, O. and Eyser, O. and Fatemi, R. and Fazio, S. and Federic, P. and Fedorisin, J. and Feng, Z. and Filip, P. and Fisyak, Y. and Flores, C. E. and Fulek, L. and Gagliardi, C. A. and Garand, D. and Geurts, F. and Gibson, A. and Girard, M. and Greiner, L. and Grosnick, D. and Gunarathne, D. S. and Guo, Y. and Gupta, S. and Gupta, A. and Guryn, W. and Hamad, A. and Hamed, A. and Haque, R. and Harris, J. W. and He, L. and Heppelmann, S. and Heppelmann, S. and Hirsch, A. and Hoffmann, G. W. and Hofman, D. J. and Horvat, S. and Huang, B. and Huang, X. and Huang, H. Z. and Huck, P. and Humanic, T. J. and Igo, G. and Jacobs, W. W. and Jang, H. and Jiang, K. and Judd, E. G. and Jung, K. and Kabana, S. and Kalinkin, D. and Kang, K. and Kauder, K. and Ke, H. W. and Keane, D. and Kechechyan, A. and Khan, Z. H. and Kikola, D. P. and Kisel, I. and Kisiel, A. and Kochenda, L. and Koetke, D. D. and Kollegger, T. and Kosarzewski, L. K. and Kraishan, A. F. and Kravtsov, P. and Krueger, K. and Kulakov, I. and Kumar, L. and Kycia, R. A. and Lamont, M. A. C. and Landgraf, J. M. and Landry, K. D. and Lauret, J. and Lebedev, A. and Lednicky, R. and Lee, J. H. and Li, X. and Li, C. and Li, W. and Li, Z. M. and Li, Y. and Li, X. and Lisa, M. A. and Liu, F. and Ljubicic, T. and Llope, W. J. and Lomnitz, M. and Longacre, R. S. and Luo, X. and Ma, Y. G. and Ma, G. L. and Ma, L. and Ma, R. and Magdy, N. and Majka, R. and Manion, A. and Margetis, S. and Markert, C. and Masui, H. and Matis, H. S. and McDonald, D. and Meehan, K. and Minaev, N. G. and Mioduszewski, S. and Mohanty, B. and Mondal, M. M. and Morozov, D. and Mustafa, M. K. and Nandi, B. K. and Nasim, Md. and Nayak, T. K. and Nigmatkulov, G. and Nogach, L. V. and Noh, S. Y. and Novak, J. and Nurushev, S. B. and Odyniec, G. and Ogawa, A. and Oh, K. and Okorokov, V. and Olvitt, D. and Page, B. S. and Pak, R. and Pan, Y. X. and Pandit, Y. and Panebratsev, Y. and Pawlik, B. and Pei, H. and Perkins, C. and Peterson, A. and Pile, P. and Planinic, M. and Pluta, J. and Poljak, N. and Poniatowska, K. and Porter, J. and Posik, M. and Poskanzer, A. M. and Pruthi, N. K. and Putschke, J. and Qiu, H. and Quintero, A. and Ramachandran, S. and Raniwala, R. and Raniwala, S. and Ray, R. L. and Ritter, H. G. and Roberts, J. B. and Rogachevskiy, O. V. and Romero, J. L. and Roy, A. and Ruan, L. and Rusnak, J. and Rusnakova, O. and Sahoo, N. R. and Sahu, P. K. and Sakrejda, I. and Salur, S. and Sandweiss, J. and Sarkar, A. and Schambach, J. and Scharenberg, R. P. and Schmah, A. M. and Schmidke, W. B. and Schmitz, N. and Seger, J. and Seyboth, P. and Shah, N. and Shahaliev, E. and Shanmuganathan, P. V. and Shao, M. and Sharma, M. K. and Sharma, B. and Shen, W. Q. and Shi, S. S. and Shou, Q. Y. and Sichtermann, E. P. and Sikora, R. and Simko, M. and Skoby, M. J. and Smirnov, D. and Smirnov, N. and Song, L. and Sorensen, P. and Spinka, H. M. and Srivastava, B. and Stanislaus, T. D. S. and Stepanov, M. and Stock, R. and Strikhanov, M. and Stringfellow, B. and Sumbera, M. and Summa, B. and Sun, X. and Sun, Z. and Sun, X. M. and Sun, Y. and Surrow, B. and Svirida, N. and Szelezniak, M. A. and Tang, A. H. and Tang, Z. and Tarnowsky, T. and Tawfik, A. N. and Thomas, J. H. and Timmins, A. R. and Tlusty, D. and Tokarev, M. and Trentalange, S. and Tribble, R. E. and Tribedy, P. and Tripathy, S. K. and Trzeciak, B. A. and Tsai, O. D. and Ullrich, T. and Underwood, D. G. and Upsal, I. and Van Buren, G. and van Nieuwenhuizen, G. and Vandenbroucke, M. and Varma, R. and Vasiliev, A. N. and Vertesi, R. and Videbæk, F. and Viyogi, Y. P. and Vokal, S. and Voloshin, S. A. and Vossen, A. and Wang, G. and Wang, Y. and Wang, F. and Wang, Y. and Wang, H. and Wang, J. S. and Webb, J. C. and Webb, G. and Wen, L. and Westfall, G. D. and Wieman, H. and Wissink, S. W. and Witt, R. and Wu, Y. F. and Xiao, Z. G. and Xie, W. and Xin, K. and Xu, Q. H. and Xu, Z. and Xu, H. and Xu, N. and Xu, Y. F. and Yang, Q. and Yang, Y. and Yang, S. and Yang, Y. and Yang, C. and Ye, Z. and Yepes, P. and Yi, L. and Yip, K. and Yoo, I. -K. and Yu, N. and Zbroszczyk, H. and Zha, W. and Zhang, X. P. and Zhang, J. and Zhang, Y. and Zhang, J. and Zhang, J. B. and Zhang, S. and Zhang, Z. and Zhao, J. and Zhong, C. and Zhou, L. and Zhu, X. and Zoulkarneeva, Y. and Zyzak, M.},
abstractNote = {We report on measurements of dielectron (e⁺e⁻) production in Au+Au collisions at a center-of-mass energy of 200 GeV per nucleon-nucleon pair using the STAR detector at RHIC. Systematic measurements of the dielectron yield as a function of transverse momentum (pT) and collision centrality show an enhancement compared to a cocktail simulation of hadronic sources in the low invariant-mass region (Mee < 1GeV/c2). This enhancement cannot be reproduced by the ρ-meson vacuum spectral function. In minimum-bias collisions, in the invariant-mass range of 0.30 – 0.76GeV/c², integrated over the full pT acceptance, the enhancement factor is 1.76±0.06(stat.)±0.26(sys.)±0.29(cocktail). The enhancement factor exhibits weak centrality and pT dependence in STAR's accessible kinematic regions, while the excess yield in this invariant-mass region as a function of the number of participating nucleons follows a power-law shape with a power of 1.44±0.10. Models that assume an in-medium broadening of the ρ-meson spectral function consistently describe the observed excess in these measurements. In addition, we report on measurements of ω- and Φ-meson production through their e⁺e⁻ decay channel. These measurements show good agreement with Tsallis blast-wave model predictions, as well as, in the case of the Φ meson, results through its K⁺K⁻ decay channel. In the intermediate invariant-mass region (1.1 < Mee < 3GeV/c²), we investigate the spectral shapes from different collision centralities. Physics implications for possible in-medium modification of charmed hadron production and other physics sources are discussed.},
doi = {10.1103/PhysRevC.92.024912},
journal = {Physical Review. C. Nuclear Physics},
number = 2,
volume = 92,
place = {United States},
year = {Mon Aug 24 00:00:00 EDT 2015},
month = {Mon Aug 24 00:00:00 EDT 2015}
}

Journal Article:

Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: Upper panel: Uncorrected multiplicity $N^{raw}_{ch}$ distribution measured within |$η$| < 0.5 and |$V_{z}$| < 5 cm. The solid curve depicts the multiplicity distribution from a MC Glauber simulation. Bottom panel: Ratio between MC and data.

Save / Share:

Works referenced in this record:

Signatures of thermal dilepton radiation at ultrarelativistic energies
journal, April 2001


Enhanced Production of Low-Mass Electron Pairs in 200 GeV/Nucleon S-Au Collisions at the CERN Super Proton Synchrotron
journal, August 1995


Low Mass Dimuons Produced in Relativistic Nuclear Collisions
journal, April 2008


Hadronic and electromagnetic probes of hot and dense nuclear matter11Supported by BMBF, DFG, GSI Darmstadt and FZ Jülich.
journal, January 1999


Dielectron Mass Spectra from Au + Au Collisions at s N N = 200 GeV
journal, July 2014


Dilepton Radiation at the CERN Super Proton Synchrotron
text, January 2007


Azimuthal anisotropy in Au+Au collisions at s NN = 200 GeV
journal, July 2005


Dilepton Spectroscopy of QCD Matter at Collider Energies
journal, January 2013


Open Charm Yields in d + A u Collisions at s N N = 200     G e V
journal, February 2005


Dilepton radiation at the CERN super-proton synchrotron
journal, June 2008


The PHOBOS perspective on discoveries at RHIC
journal, August 2005


High-energy-physics event generation with Pythia 6.1
journal, April 2001


High-Energy-Physics Event Generation with PYTHIA 6.1
text, January 2000


Extensive Particle Identification with TPC and TOF at the STAR Experiment
text, January 2005


Di-electron production from vector mesons with medium modifications in heavy ion collisions
journal, February 2012


The Statistical Origin of Constituent-Quark Scaling in QGP Hadronization
journal, March 2013


Identified charged particle spectra and yields in Au + Au collisions at s N N = 200 GeV
journal, March 2004


Enhanced Production of Low-Mass Electron-Positron Pairs in 40- A GeV Pb-Au Collisions at the CERN SPS
journal, July 2003


K ( 892 ) * resonance production in Au+Au and p + p collisions at s NN = 200 GeV
journal, June 2005


Dilepton production from AGS to SPS energies within a relativistic transport approach
journal, June 1997


Methods for analyzing anisotropic flow in relativistic nuclear collisions
journal, September 1998


Production of soft dileptons in the quark-gluon plasma
journal, May 1990


Evidence for Radial Flow of Thermal Dileptons in High-Energy Nuclear Collisions
journal, January 2008


<mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">D</mml:mi><mml:mover accent="true"><mml:mi mathvariant="normal">D</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> correlations as a sensitive probe for thermalization in high energy nuclear collisions
journal, April 2007


Quark–gluon plasma and color glass condensate at RHIC? The perspective from the BRAHMS experiment
journal, August 2005


ϕ meson production in <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">Au</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">Au</mml:mi></mml:math> and <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>p</mml:mi></mml:math> collisions at <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mspace width="0.25em"/><mml:mtext>GeV</mml:mtext></mml:math>
journal, April 2005


Quarkonia measurement in and collisions at by PHENIX Detector
journal, November 2009


Measurements of D 0 and D * production in p + p collisions at s = 200 GeV
journal, October 2012


First results on angular distributions of thermal dileptons in nuclear collisions
text, January 2008


ρ 0 Production and Possible Modification in A u + A u and p + p Collisions at s N N = 200 G e V
journal, March 2004


Observation of D 0 Meson Nuclear Modifications in Au + Au Collisions at s NN = 200 GeV
journal, September 2014


Comprehensive Interpretation of Thermal Dileptons Measured at the CERN Super Proton Synchrotron
journal, September 2006


Thermal dimuon yields: Comparison with NA60 results at 158 GeV/nucleon
journal, February 2007


The TOFp/pVPD time-of-flight system for STAR
journal, April 2004

  • Llope, W. J.; Geurts, F.; Mitchell, J. W.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 522, Issue 3
  • DOI: 10.1016/j.nima.2003.11.414

High transverse momentum η meson production in p + p , d +Au, and Au+Au collisions at s NN = 200 GeV
journal, February 2007


Quarkonium Production in Hadronic Collisions
journal, August 1995

  • Gavai, R.; Kharzeev, D.; Satz, H.
  • International Journal of Modern Physics A, Vol. 10, Issue 20n21
  • DOI: 10.1142/S0217751X95001443

Di-electron spectrum at mid-rapidity in p + p collisions at s = 200 GeV
journal, August 2012


Dielectron Cross Section Measurements in Nucleus-Nucleus Reactions at 1.0 A GeV
journal, August 1997


Dielectron production in Ar + KCl collisions at 1.76 A GeV
journal, July 2011


Dilepton flow and deconfinement phase transition in heavy ion collisions
journal, July 2011


First Results on Angular Distributions of Thermal Dileptons in Nuclear Collisions
journal, June 2009


Relativistic transport approach for nucleus-nucleus collisions from SIS to SPS energies
journal, June 1996


Low-mass e+e− pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
journal, March 1998


Is ρ-meson melting compatible with chiral restoration?
journal, April 2014


Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at s N N = 200 GeV
journal, December 2014


Suppressed π 0 Production at Large Transverse Momentum in Central A u + A u Collisions at s N N = 200 G e V
journal, August 2003


e + e--pair production in Pb-Au collisions at 158 GeV per nucleon
journal, June 2005


Dilepton emission in high-energy heavy-ion collisions with viscous hydrodynamics
text, January 2013


Dilepton emission in high-energy heavy-ion collisions with viscous hydrodynamics
journal, March 2014


Effect of Partonic “Wind” on Charm Quark Correlations in High-Energy Nuclear Collisions
journal, April 2008


RHIC project overview
journal, March 2003

  • Harrison, M.; Ludlam, T.; Ozaki, S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
  • DOI: 10.1016/S0168-9002(02)01937-X

D s Meson as a Quantitative Probe of Diffusion and Hadronization in Nuclear Collisions
journal, March 2013


Evidence for the production of thermal muon pairs with masses above 1 GeV/c 2 in 158 A GeV indium-indium collisions: NA60 Collaboration
journal, January 2009


Dielectron Production in C 12 + C 12 Collisions at 2 A GeV with the HADES Spectrometer
journal, February 2007


Dilepton flow and deconfinement phase transition in heavy ion collisions
text, January 2010


Identified Baryon and Meson Distributions at Large Transverse Momenta from Au + Au Collisions at s N N = 200 GeV
journal, October 2006


Identified Particle Distributions in p p and Au + Au Collisions at s N N = 200 GeV
journal, March 2004


Lp approximation by multivariate Baskakov–Kantorovich operators
journal, December 2008

  • Cao, Feilong; Ding, Chunmei
  • Journal of Mathematical Analysis and Applications, Vol. 348, Issue 2
  • DOI: 10.1016/j.jmaa.2008.05.049

J / ψ Production versus Centrality, Transverse Momentum, andRapidity in Au + Au Collisions at s N N = 200 GeV
journal, June 2007


The TOFp/pVPD Time of Flight System for STAR
text, January 2003


Dielectron yields in p+d and p+p collisions at 4.9 GeV
journal, December 1992


Chiral restoration in hot and/or dense matter
journal, May 1996


Quarkonium production in hadronic collisions
text, January 1995


Parton–hadron–string dynamics: An off-shell transport approach for relativistic energies
journal, December 2009


Dilepton production in high energy heavy ion collisions with 3+1D relativistic viscous hydrodynamics
journal, May 2013


The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC
journal, March 2003

  • Anderson, M.; Berkovitz, J.; Betts, W.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
  • DOI: 10.1016/S0168-9002(02)01964-2

Elliptic flow of thermal dileptons in relativistic nuclear collisions
journal, May 2007


Dielectron production in Ca+Ca collisions at 1.0 and 2.0 A GeV
journal, August 1989


Extensive particle identification with TPC and TOF at the STAR experiment
journal, March 2006

  • Shao, Ming; Barannikova, Olga; Dong, Xin
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 558, Issue 2
  • DOI: 10.1016/j.nima.2005.11.251

Energy Loss and Flow of Heavy Quarks in Au + Au Collisions at s NN = 200 GeV
journal, April 2007


High p T nonphotonic electron production in p + p collisions at s = 200 GeV
journal, March 2011


Excess of continuum dimuon production at masses between threshold and the
journal, January 2000


Parton–Hadron-String Dynamics at relativistic collider energies
journal, April 2011


Analysis of dilepton production in Au + Au collisions at s NN = 200 GeV within the parton-hadron-string dynamics transport approach
journal, February 2012


Properties of ρ and ω mesons at finite temperature and density as inferred from experiment
journal, July 2001


Dimuon transverse momentum spectra as a tool to characterize the emission region in heavy-ion collisions
journal, February 2008


Low-mass dileptons at the CERN-SpS: evidence for chiral restoration?
journal, December 1999


Spectra and radial flow in relativistic heavy ion collisions with Tsallis statistics in a blast-wave description
journal, May 2009


First Measurement of the ρ Spectral Function in High-Energy Nuclear Collisions
journal, April 2006


Works referencing / citing this record:

Probing dense baryon-rich matter with virtual photons
journal, July 2019


Responses of the chiral-magnetic-effect–sensitive sine observable to resonance backgrounds in heavy-ion collisions
journal, September 2018


Challenges in flow background removal in search for the chiral magnetic effect
journal, May 2017


Thermal dileptons from coarse-grained transport as fireball probes at SIS energies
journal, May 2016

  • Galatyuk, Tetyana; Hohler, Paul M.; Rapp, Ralf
  • The European Physical Journal A, Vol. 52, Issue 5
  • DOI: 10.1140/epja/i2016-16131-1

Complications in the interpretation of the charge-asymmetry-dependent π flow for the chiral magnetic wave
journal, January 2020


Back-to-back relative-excess observable to identify the chiral magnetic effect
journal, January 2020


Isolating the chiral magnetic effect from backgrounds by pair invariant mass
journal, February 2019


Thermal dilepton rates and electrical conductivity of the QGP from the lattice
text, January 2016


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.