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Title: Measurements of dielectron production in Au + Au collisions at s N N = 27 , 39, and 62.4 GeV from the STAR experiment

Abstract

We report systematic measurements of dielectron (e+e) invariant-mass Mee spectra at midrapidity in Au + Au collisions at s N N = 27 = 27, 39, and 62.4 GeV taken with the STAR detector at the Relativistic Heavy Ion Collider. For all energies studied, a significant excess yield of dielectrons is observed in the low-mass region ( 0.40 < Mee < 0.75 MeV / c2) compared to hadronic cocktail simulations at freeze-out. Models that include an in-medium broadening of the ρ -meson spectral function consistently describe the observed excess. In addition, we report acceptance-corrected dielectron-excess spectra for Au + Au collisions at midrapidity ( |yee| < 1) in the 0–80% centrality bin for each collision energy. The integrated excess yields for 0.4 < Mee < 0.75 GeV / c2, normalized by the charged particle multiplicity at midrapidity, are compared with previously published measurements for Au + Au at s N N = 27 = 19.6 and 200 GeV. Models thatmore » include an in-medium broadening of the ρ -meson spectral function consistently describe the observed excess. Furthermore, the normalized excess yields in the low-mass region show no significant collision energy dependence. The data, however, are consistent with model calculations that demonstrate a modest energy dependence.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Org.:
STAR Collaboration
OSTI Identifier:
2222642
Alternate Identifier(s):
OSTI ID: 1973516
Report Number(s):
BNL-224287-2023-JAAM
Journal ID: ISSN 2469-9985
Grant/Contract Number:  
SC0017982; SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C
Additional Journal Information:
Journal Volume: 107; Journal Issue: 6; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Particle & resonance production; Relativistic heavy-ion collisions

Citation Formats

Abdulhamid, M. I., Aboona, B. E., Adam, J., Adamczyk, L., Adams, J. R., Aggarwal, I., Aggarwal, M. M., Ahammed, Z., Anderson, D. M., Aschenauer, E. C., Aslam, S., Atchison, J., Bairathi, V., Baker, W., Ball Cap, J. G., Barish, K., Bellwied, R., Bhagat, P., Bhasin, A., Bhatta, S., Bielcik, J., Bielcikova, J., Brandenburg, J. D., Butterworth, J., Cai, X. Z., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Ceska, J., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, Z., Chatterjee, A., Chen, D., Chen, J., Chen, J. H., Chen, Z., Cheng, J., Cheng, Y., Choudhury, S., Christie, W., Chu, X., Crawford, H. J., Csanád, M., Dale-Gau, G., Das, A., Daugherity, M., Deppner, I. M., Dhamija, A., Di Carlo, L., Didenko, L., Dixit, P., Dong, X., Drachenberg, J. L., Duckworth, E., Dunlop, J. C., Engelage, J., Eppley, G., Esumi, S., Evdokimov, O., Ewigleben, A., Eyser, O., Fatemi, R., Fazio, S., Feng, C. J., Feng, Y., Finch, E., Fisyak, Y., Flor, F. A., Fu, C., Gagliardi, C. A., Galatyuk, T., Geurts, F., Ghimire, N., Gibson, A., Gopal, K., Gou, X., Grosnick, D., Guo, Y., Gupta, A., Guryn, W., Hamed, A., Han, Y., Harabasz, S., Harasty, M. D., Harris, J. W., Harrison-Smith, H., He, W., He, X. H., He, Y., Herrmann, N., Holub, L., Hu, C., Hu, Q., Hu, Y., Huang, B., Huang, H., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Huang, Y., Huang, Y., Huck, P., Humanic, T. J., Isenhower, D., Isshiki, M., Jacobs, W. W., Jalotra, A., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jin, C., Ju, X., Judd, E. G., Kabana, S., Kabir, M. L., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kimelman, B., Kincses, D., Kisel, I., Kiselev, A., Knospe, A. G., Ko, H. S., Kosarzewski, L. K., Kramarik, L., Kumar, L., Kumar, S., Kunnawalkam Elayavalli, R., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lee, J. H., Leung, Y. H., Lewis, N., Li, C., Li, W., Li, X., Li, Y., Li, Y., Li, Z., Liang, X., Liang, Y., Licenik, R., Lin, T., Lisa, M. A., Liu, C., Liu, F., Liu, G., Liu, H., Liu, H., Liu, L., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomicky, O., Longacre, R. S., Loyd, E. M., Lu, T., Lukow, N. S., Luo, X. F., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Mazer, J. A., McNamara, G., Mi, K., Mioduszewski, S., Mohanty, B., Mondal, M. M., Mooney, I., Mukherjee, A., Nagy, M. I., Nain, A. S., Nam, J. D., Nasim, Md, Neff, D., Nelson, J. M., Nemes, D. B., Nie, M., Niida, T., Nishitani, R., Nonaka, T., Odyniec, G., Ogawa, A., Oh, S., Okubo, K., Page, B. S., Pak, R., Pan, J., Pandav, A., Pandey, A. K., Pani, T., Paul, A., Pawlik, B., Pawlowska, D., Perkins, C., Pluta, J., Pokhrel, B. R., Posik, M., Protzman, T., Prozorova, V., Pruthi, N. K., Przybycien, M., Putschke, J., Qin, Z., Qiu, H., Quintero, A., Racz, C., Radhakrishnan, S. K., Raha, N., Ray, R. L., Reed, R., Ritter, H. G., Robertson, C. W., Robotkova, M., Rosales Aguilar, M. A., Roy, D., Roy Chowdhury, P., Ruan, L., Sahoo, A. K., Sahoo, N. R., Sako, H., Salur, S., Sato, S., Schmidke, W. B., Schmitz, N., Seck, F-J, Seger, J., Seto, R., Seyboth, P., Shah, N., Shanmuganathan, P. V., Shao, T., Sharma, M., Sharma, N., Sharma, R., Sharma, S. R., Sheikh, A. I., Shen, D. Y., Shen, K., Shi, S. S., Shi, Y., Shou, Q. Y., Si, F., Singh, J., Singha, S., Sinha, P., Skoby, M. J., Smirnov, N., Söhngen, Y., Song, Y., Srivastava, B., Stanislaus, T. S., Stefaniak, M., Stewart, D. J., Stringfellow, B., Su, Y., Suaide, A. P., Sumbera, M., Sun, C., Sun, X., Sun, Y., Sun, Y., Surrow, B., Sweger, Z. W., Szymanski, P., Tamis, A., Tang, A. H., Tang, Z., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Truhlar, T., Trzeciak, B. A., Tsai, O. D., Tsang, C. Y., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vassiliev, I., Verkest, V., Videbæk, F., Voloshin, S. A., Wang, F., Wang, G., Wang, J. S., Wang, X., Wang, Y., Wang, Y., Wang, Y., Wang, Z., Webb, J. C., Weidenkaff, P. C., Westfall, G. D., Wielanek, D., Wieman, H., Wilks, G., Wissink, S. W., Witt, R., Wu, J., Wu, J., Wu, X., Wu, Y., Xi, B., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y., Xu, Y., Xu, Z., Xu, Z., Yan, G., Yan, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Ye, Z., Ye, Z., Yi, L., Yip, K., Yu, Y., Zbroszczyk, H., Zha, W., Zhang, C., Zhang, D., Zhang, J., Zhang, S., Zhang, W., Zhang, X., Zhang, Y., Zhang, Y., Zhang, Y., Zhang, Z. J., Zhang, Z., Zhang, Z., Zhao, F., Zhao, J., Zhao, M., Zhou, C., Zhou, J., Zhou, S., Zhou, Y., Zhu, X., Zurek, M., and Zyzak, M. Measurements of dielectron production in Au+Au collisions at sNN=27 , 39, and 62.4 GeV from the STAR experiment. United States: N. p., 2023. Web. doi:10.1103/physrevc.107.l061901.
Abdulhamid, M. I., Aboona, B. E., Adam, J., Adamczyk, L., Adams, J. R., Aggarwal, I., Aggarwal, M. M., Ahammed, Z., Anderson, D. M., Aschenauer, E. C., Aslam, S., Atchison, J., Bairathi, V., Baker, W., Ball Cap, J. G., Barish, K., Bellwied, R., Bhagat, P., Bhasin, A., Bhatta, S., Bielcik, J., Bielcikova, J., Brandenburg, J. D., Butterworth, J., Cai, X. Z., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Ceska, J., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, Z., Chatterjee, A., Chen, D., Chen, J., Chen, J. H., Chen, Z., Cheng, J., Cheng, Y., Choudhury, S., Christie, W., Chu, X., Crawford, H. J., Csanád, M., Dale-Gau, G., Das, A., Daugherity, M., Deppner, I. M., Dhamija, A., Di Carlo, L., Didenko, L., Dixit, P., Dong, X., Drachenberg, J. L., Duckworth, E., Dunlop, J. C., Engelage, J., Eppley, G., Esumi, S., Evdokimov, O., Ewigleben, A., Eyser, O., Fatemi, R., Fazio, S., Feng, C. J., Feng, Y., Finch, E., Fisyak, Y., Flor, F. A., Fu, C., Gagliardi, C. A., Galatyuk, T., Geurts, F., Ghimire, N., Gibson, A., Gopal, K., Gou, X., Grosnick, D., Guo, Y., Gupta, A., Guryn, W., Hamed, A., Han, Y., Harabasz, S., Harasty, M. D., Harris, J. W., Harrison-Smith, H., He, W., He, X. H., He, Y., Herrmann, N., Holub, L., Hu, C., Hu, Q., Hu, Y., Huang, B., Huang, H., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Huang, Y., Huang, Y., Huck, P., Humanic, T. J., Isenhower, D., Isshiki, M., Jacobs, W. W., Jalotra, A., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jin, C., Ju, X., Judd, E. G., Kabana, S., Kabir, M. L., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kimelman, B., Kincses, D., Kisel, I., Kiselev, A., Knospe, A. G., Ko, H. S., Kosarzewski, L. K., Kramarik, L., Kumar, L., Kumar, S., Kunnawalkam Elayavalli, R., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lee, J. H., Leung, Y. H., Lewis, N., Li, C., Li, W., Li, X., Li, Y., Li, Y., Li, Z., Liang, X., Liang, Y., Licenik, R., Lin, T., Lisa, M. A., Liu, C., Liu, F., Liu, G., Liu, H., Liu, H., Liu, L., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomicky, O., Longacre, R. S., Loyd, E. M., Lu, T., Lukow, N. S., Luo, X. F., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Mazer, J. A., McNamara, G., Mi, K., Mioduszewski, S., Mohanty, B., Mondal, M. M., Mooney, I., Mukherjee, A., Nagy, M. I., Nain, A. S., Nam, J. D., Nasim, Md, Neff, D., Nelson, J. M., Nemes, D. B., Nie, M., Niida, T., Nishitani, R., Nonaka, T., Odyniec, G., Ogawa, A., Oh, S., Okubo, K., Page, B. S., Pak, R., Pan, J., Pandav, A., Pandey, A. K., Pani, T., Paul, A., Pawlik, B., Pawlowska, D., Perkins, C., Pluta, J., Pokhrel, B. R., Posik, M., Protzman, T., Prozorova, V., Pruthi, N. K., Przybycien, M., Putschke, J., Qin, Z., Qiu, H., Quintero, A., Racz, C., Radhakrishnan, S. K., Raha, N., Ray, R. L., Reed, R., Ritter, H. G., Robertson, C. W., Robotkova, M., Rosales Aguilar, M. A., Roy, D., Roy Chowdhury, P., Ruan, L., Sahoo, A. K., Sahoo, N. R., Sako, H., Salur, S., Sato, S., Schmidke, W. B., Schmitz, N., Seck, F-J, Seger, J., Seto, R., Seyboth, P., Shah, N., Shanmuganathan, P. V., Shao, T., Sharma, M., Sharma, N., Sharma, R., Sharma, S. R., Sheikh, A. I., Shen, D. Y., Shen, K., Shi, S. S., Shi, Y., Shou, Q. Y., Si, F., Singh, J., Singha, S., Sinha, P., Skoby, M. J., Smirnov, N., Söhngen, Y., Song, Y., Srivastava, B., Stanislaus, T. S., Stefaniak, M., Stewart, D. J., Stringfellow, B., Su, Y., Suaide, A. P., Sumbera, M., Sun, C., Sun, X., Sun, Y., Sun, Y., Surrow, B., Sweger, Z. W., Szymanski, P., Tamis, A., Tang, A. H., Tang, Z., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Truhlar, T., Trzeciak, B. A., Tsai, O. D., Tsang, C. Y., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vassiliev, I., Verkest, V., Videbæk, F., Voloshin, S. A., Wang, F., Wang, G., Wang, J. S., Wang, X., Wang, Y., Wang, Y., Wang, Y., Wang, Z., Webb, J. C., Weidenkaff, P. C., Westfall, G. D., Wielanek, D., Wieman, H., Wilks, G., Wissink, S. W., Witt, R., Wu, J., Wu, J., Wu, X., Wu, Y., Xi, B., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y., Xu, Y., Xu, Z., Xu, Z., Yan, G., Yan, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Ye, Z., Ye, Z., Yi, L., Yip, K., Yu, Y., Zbroszczyk, H., Zha, W., Zhang, C., Zhang, D., Zhang, J., Zhang, S., Zhang, W., Zhang, X., Zhang, Y., Zhang, Y., Zhang, Y., Zhang, Z. J., Zhang, Z., Zhang, Z., Zhao, F., Zhao, J., Zhao, M., Zhou, C., Zhou, J., Zhou, S., Zhou, Y., Zhu, X., Zurek, M., & Zyzak, M. Measurements of dielectron production in Au+Au collisions at sNN=27 , 39, and 62.4 GeV from the STAR experiment. United States. https://doi.org/10.1103/physrevc.107.l061901
Abdulhamid, M. I., Aboona, B. E., Adam, J., Adamczyk, L., Adams, J. R., Aggarwal, I., Aggarwal, M. M., Ahammed, Z., Anderson, D. M., Aschenauer, E. C., Aslam, S., Atchison, J., Bairathi, V., Baker, W., Ball Cap, J. G., Barish, K., Bellwied, R., Bhagat, P., Bhasin, A., Bhatta, S., Bielcik, J., Bielcikova, J., Brandenburg, J. D., Butterworth, J., Cai, X. Z., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Ceska, J., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, Z., Chatterjee, A., Chen, D., Chen, J., Chen, J. H., Chen, Z., Cheng, J., Cheng, Y., Choudhury, S., Christie, W., Chu, X., Crawford, H. J., Csanád, M., Dale-Gau, G., Das, A., Daugherity, M., Deppner, I. M., Dhamija, A., Di Carlo, L., Didenko, L., Dixit, P., Dong, X., Drachenberg, J. L., Duckworth, E., Dunlop, J. C., Engelage, J., Eppley, G., Esumi, S., Evdokimov, O., Ewigleben, A., Eyser, O., Fatemi, R., Fazio, S., Feng, C. J., Feng, Y., Finch, E., Fisyak, Y., Flor, F. A., Fu, C., Gagliardi, C. A., Galatyuk, T., Geurts, F., Ghimire, N., Gibson, A., Gopal, K., Gou, X., Grosnick, D., Guo, Y., Gupta, A., Guryn, W., Hamed, A., Han, Y., Harabasz, S., Harasty, M. D., Harris, J. W., Harrison-Smith, H., He, W., He, X. H., He, Y., Herrmann, N., Holub, L., Hu, C., Hu, Q., Hu, Y., Huang, B., Huang, H., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Huang, Y., Huang, Y., Huck, P., Humanic, T. J., Isenhower, D., Isshiki, M., Jacobs, W. W., Jalotra, A., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jin, C., Ju, X., Judd, E. G., Kabana, S., Kabir, M. L., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kimelman, B., Kincses, D., Kisel, I., Kiselev, A., Knospe, A. G., Ko, H. S., Kosarzewski, L. K., Kramarik, L., Kumar, L., Kumar, S., Kunnawalkam Elayavalli, R., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lee, J. H., Leung, Y. H., Lewis, N., Li, C., Li, W., Li, X., Li, Y., Li, Y., Li, Z., Liang, X., Liang, Y., Licenik, R., Lin, T., Lisa, M. A., Liu, C., Liu, F., Liu, G., Liu, H., Liu, H., Liu, L., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomicky, O., Longacre, R. S., Loyd, E. M., Lu, T., Lukow, N. S., Luo, X. F., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Mazer, J. A., McNamara, G., Mi, K., Mioduszewski, S., Mohanty, B., Mondal, M. M., Mooney, I., Mukherjee, A., Nagy, M. I., Nain, A. S., Nam, J. D., Nasim, Md, Neff, D., Nelson, J. M., Nemes, D. B., Nie, M., Niida, T., Nishitani, R., Nonaka, T., Odyniec, G., Ogawa, A., Oh, S., Okubo, K., Page, B. S., Pak, R., Pan, J., Pandav, A., Pandey, A. K., Pani, T., Paul, A., Pawlik, B., Pawlowska, D., Perkins, C., Pluta, J., Pokhrel, B. R., Posik, M., Protzman, T., Prozorova, V., Pruthi, N. K., Przybycien, M., Putschke, J., Qin, Z., Qiu, H., Quintero, A., Racz, C., Radhakrishnan, S. K., Raha, N., Ray, R. L., Reed, R., Ritter, H. G., Robertson, C. W., Robotkova, M., Rosales Aguilar, M. A., Roy, D., Roy Chowdhury, P., Ruan, L., Sahoo, A. K., Sahoo, N. R., Sako, H., Salur, S., Sato, S., Schmidke, W. B., Schmitz, N., Seck, F-J, Seger, J., Seto, R., Seyboth, P., Shah, N., Shanmuganathan, P. V., Shao, T., Sharma, M., Sharma, N., Sharma, R., Sharma, S. R., Sheikh, A. I., Shen, D. Y., Shen, K., Shi, S. S., Shi, Y., Shou, Q. Y., Si, F., Singh, J., Singha, S., Sinha, P., Skoby, M. J., Smirnov, N., Söhngen, Y., Song, Y., Srivastava, B., Stanislaus, T. S., Stefaniak, M., Stewart, D. J., Stringfellow, B., Su, Y., Suaide, A. P., Sumbera, M., Sun, C., Sun, X., Sun, Y., Sun, Y., Surrow, B., Sweger, Z. W., Szymanski, P., Tamis, A., Tang, A. H., Tang, Z., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Truhlar, T., Trzeciak, B. A., Tsai, O. D., Tsang, C. Y., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vassiliev, I., Verkest, V., Videbæk, F., Voloshin, S. A., Wang, F., Wang, G., Wang, J. S., Wang, X., Wang, Y., Wang, Y., Wang, Y., Wang, Z., Webb, J. C., Weidenkaff, P. C., Westfall, G. D., Wielanek, D., Wieman, H., Wilks, G., Wissink, S. W., Witt, R., Wu, J., Wu, J., Wu, X., Wu, Y., Xi, B., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y., Xu, Y., Xu, Z., Xu, Z., Yan, G., Yan, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Ye, Z., Ye, Z., Yi, L., Yip, K., Yu, Y., Zbroszczyk, H., Zha, W., Zhang, C., Zhang, D., Zhang, J., Zhang, S., Zhang, W., Zhang, X., Zhang, Y., Zhang, Y., Zhang, Y., Zhang, Z. J., Zhang, Z., Zhang, Z., Zhao, F., Zhao, J., Zhao, M., Zhou, C., Zhou, J., Zhou, S., Zhou, Y., Zhu, X., Zurek, M., and Zyzak, M. Thu . "Measurements of dielectron production in Au+Au collisions at sNN=27 , 39, and 62.4 GeV from the STAR experiment". United States. https://doi.org/10.1103/physrevc.107.l061901.
@article{osti_2222642,
title = {Measurements of dielectron production in Au+Au collisions at sNN=27 , 39, and 62.4 GeV from the STAR experiment},
author = {Abdulhamid, M. I. and Aboona, B. E. and Adam, J. and Adamczyk, L. and Adams, J. R. and Aggarwal, I. and Aggarwal, M. M. and Ahammed, Z. and Anderson, D. M. and Aschenauer, E. C. and Aslam, S. and Atchison, J. and Bairathi, V. and Baker, W. and Ball Cap, J. G. and Barish, K. and Bellwied, R. and Bhagat, P. and Bhasin, A. and Bhatta, S. and Bielcik, J. and Bielcikova, J. and Brandenburg, J. D. and Butterworth, J. and Cai, X. Z. and Caines, H. and Calderón de la Barca Sánchez, M. and Cebra, D. and Ceska, J. and Chakaberia, I. and Chaloupka, P. and Chan, B. K. and Chang, Z. and Chatterjee, A. and Chen, D. and Chen, J. and Chen, J. H. and Chen, Z. and Cheng, J. and Cheng, Y. and Choudhury, S. and Christie, W. and Chu, X. and Crawford, H. J. and Csanád, M. and Dale-Gau, G. and Das, A. and Daugherity, M. and Deppner, I. M. and Dhamija, A. and Di Carlo, L. and Didenko, L. and Dixit, P. and Dong, X. and Drachenberg, J. L. and Duckworth, E. and Dunlop, J. C. and Engelage, J. and Eppley, G. and Esumi, S. and Evdokimov, O. and Ewigleben, A. and Eyser, O. and Fatemi, R. and Fazio, S. and Feng, C. J. and Feng, Y. and Finch, E. and Fisyak, Y. and Flor, F. A. and Fu, C. and Gagliardi, C. A. and Galatyuk, T. and Geurts, F. and Ghimire, N. and Gibson, A. and Gopal, K. and Gou, X. and Grosnick, D. and Guo, Y. and Gupta, A. and Guryn, W. and Hamed, A. and Han, Y. and Harabasz, S. and Harasty, M. D. and Harris, J. W. and Harrison-Smith, H. and He, W. and He, X. H. and He, Y. and Herrmann, N. and Holub, L. and Hu, C. and Hu, Q. and Hu, Y. and Huang, B. and Huang, H. and Huang, H. Z. and Huang, S. L. and Huang, T. and Huang, X. and Huang, Y. and Huang, Y. and Huck, P. and Humanic, T. J. and Isenhower, D. and Isshiki, M. and Jacobs, W. W. and Jalotra, A. and Jena, C. and Jentsch, A. and Ji, Y. and Jia, J. and Jin, C. and Ju, X. and Judd, E. G. and Kabana, S. and Kabir, M. L. and Kagamaster, S. and Kalinkin, D. and Kang, K. and Kapukchyan, D. and Kauder, K. and Ke, H. W. and Keane, D. and Kelsey, M. and Khyzhniak, Y. V. and Kikoła, D. P. and Kimelman, B. and Kincses, D. and Kisel, I. and Kiselev, A. and Knospe, A. G. and Ko, H. S. and Kosarzewski, L. K. and Kramarik, L. and Kumar, L. and Kumar, S. and Kunnawalkam Elayavalli, R. and Lacey, R. and Landgraf, J. M. and Lauret, J. and Lebedev, A. and Lee, J. H. and Leung, Y. H. and Lewis, N. and Li, C. and Li, W. and Li, X. and Li, Y. and Li, Y. and Li, Z. and Liang, X. and Liang, Y. and Licenik, R. and Lin, T. and Lisa, M. A. and Liu, C. and Liu, F. and Liu, G. and Liu, H. and Liu, H. and Liu, L. and Liu, T. and Liu, X. and Liu, Y. and Liu, Z. and Ljubicic, T. and Llope, W. J. and Lomicky, O. and Longacre, R. S. and Loyd, E. M. and Lu, T. and Lukow, N. S. and Luo, X. F. and Ma, L. and Ma, R. and Ma, Y. G. and Magdy, N. and Mallick, D. and Margetis, S. and Markert, C. and Matis, H. S. and Mazer, J. A. and McNamara, G. and Mi, K. and Mioduszewski, S. and Mohanty, B. and Mondal, M. M. and Mooney, I. and Mukherjee, A. and Nagy, M. I. and Nain, A. S. and Nam, J. D. and Nasim, Md and Neff, D. and Nelson, J. M. and Nemes, D. B. and Nie, M. and Niida, T. and Nishitani, R. and Nonaka, T. and Odyniec, G. and Ogawa, A. and Oh, S. and Okubo, K. and Page, B. S. and Pak, R. and Pan, J. and Pandav, A. and Pandey, A. K. and Pani, T. and Paul, A. and Pawlik, B. and Pawlowska, D. and Perkins, C. and Pluta, J. and Pokhrel, B. R. and Posik, M. and Protzman, T. and Prozorova, V. and Pruthi, N. K. and Przybycien, M. and Putschke, J. and Qin, Z. and Qiu, H. and Quintero, A. and Racz, C. and Radhakrishnan, S. K. and Raha, N. and Ray, R. L. and Reed, R. and Ritter, H. G. and Robertson, C. W. and Robotkova, M. and Rosales Aguilar, M. A. and Roy, D. and Roy Chowdhury, P. and Ruan, L. and Sahoo, A. K. and Sahoo, N. R. and Sako, H. and Salur, S. and Sato, S. and Schmidke, W. B. and Schmitz, N. and Seck, F-J and Seger, J. and Seto, R. and Seyboth, P. and Shah, N. and Shanmuganathan, P. V. and Shao, T. and Sharma, M. and Sharma, N. and Sharma, R. and Sharma, S. R. and Sheikh, A. I. and Shen, D. Y. and Shen, K. and Shi, S. S. and Shi, Y. and Shou, Q. Y. and Si, F. and Singh, J. and Singha, S. and Sinha, P. and Skoby, M. J. and Smirnov, N. and Söhngen, Y. and Song, Y. and Srivastava, B. and Stanislaus, T. S. and Stefaniak, M. and Stewart, D. J. and Stringfellow, B. and Su, Y. and Suaide, A. P. and Sumbera, M. and Sun, C. and Sun, X. and Sun, Y. and Sun, Y. and Surrow, B. and Sweger, Z. W. and Szymanski, P. and Tamis, A. and Tang, A. H. and Tang, Z. and Tarnowsky, T. and Thomas, J. H. and Timmins, A. R. and Tlusty, D. and Todoroki, T. and Tomkiel, C. A. and Trentalange, S. and Tribble, R. E. and Tribedy, P. and Truhlar, T. and Trzeciak, B. A. and Tsai, O. D. and Tsang, C. Y. and Tu, Z. and Ullrich, T. and Underwood, D. G. and Upsal, I. and Van Buren, G. and Vanek, J. and Vassiliev, I. and Verkest, V. and Videbæk, F. and Voloshin, S. A. and Wang, F. and Wang, G. and Wang, J. S. and Wang, X. and Wang, Y. and Wang, Y. and Wang, Y. and Wang, Z. and Webb, J. C. and Weidenkaff, P. C. and Westfall, G. D. and Wielanek, D. and Wieman, H. and Wilks, G. and Wissink, S. W. and Witt, R. and Wu, J. and Wu, J. and Wu, X. and Wu, Y. and Xi, B. and Xiao, Z. G. and Xie, G. and Xie, W. and Xu, H. and Xu, N. and Xu, Q. H. and Xu, Y. and Xu, Y. and Xu, Z. and Xu, Z. and Yan, G. and Yan, Z. and Yang, C. and Yang, Q. and Yang, S. and Yang, Y. and Ye, Z. and Ye, Z. and Yi, L. and Yip, K. and Yu, Y. and Zbroszczyk, H. and Zha, W. and Zhang, C. and Zhang, D. and Zhang, J. and Zhang, S. and Zhang, W. and Zhang, X. and Zhang, Y. and Zhang, Y. and Zhang, Y. and Zhang, Z. J. and Zhang, Z. and Zhang, Z. and Zhao, F. and Zhao, J. and Zhao, M. and Zhou, C. and Zhou, J. and Zhou, S. and Zhou, Y. and Zhu, X. and Zurek, M. and Zyzak, M.},
abstractNote = {We report systematic measurements of dielectron (e+e–) invariant-mass Mee spectra at midrapidity in Au + Au collisions at sNN=27 = 27, 39, and 62.4 GeV taken with the STAR detector at the Relativistic Heavy Ion Collider. For all energies studied, a significant excess yield of dielectrons is observed in the low-mass region ( 0.40 < Mee < 0.75 MeV / c2) compared to hadronic cocktail simulations at freeze-out. Models that include an in-medium broadening of the ρ -meson spectral function consistently describe the observed excess. In addition, we report acceptance-corrected dielectron-excess spectra for Au + Au collisions at midrapidity ( |yee| < 1) in the 0–80% centrality bin for each collision energy. The integrated excess yields for 0.4 < Mee < 0.75 GeV / c2, normalized by the charged particle multiplicity at midrapidity, are compared with previously published measurements for Au + Au at sNN=27 = 19.6 and 200 GeV. Models that include an in-medium broadening of the ρ -meson spectral function consistently describe the observed excess. Furthermore, the normalized excess yields in the low-mass region show no significant collision energy dependence. The data, however, are consistent with model calculations that demonstrate a modest energy dependence.},
doi = {10.1103/physrevc.107.l061901},
journal = {Physical Review. C},
number = 6,
volume = 107,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2023},
month = {Thu Jun 01 00:00:00 EDT 2023}
}

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Works referenced in this record:

Aspects of hadron physics
journal, January 2007

  • Roberts, C. D.; Bhagwat, M. S.; Höll, A.
  • The European Physical Journal Special Topics, Vol. 140, Issue 1
  • DOI: 10.1140/epjst/e2007-00003-5

Review of lattice results concerning low-energy particle physics
journal, September 2014


Chiral and deconfinement aspects of the QCD transition
journal, March 2012


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


Modification of the ρ meson detected by low-mass electron–positron pairs in central PbAu collisions at <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:mn>158</mml:mn><mml:mi>A</mml:mi><mml:mtext> </mml:mtext><mml:mtext>GeV</mml:mtext><mml:mo stretchy="false">/</mml:mo><mml:mi>c</mml:mi></mml:math>
journal, September 2008


NA60 results on thermal dimuons
journal, February 2009


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


Measurements of dielectron production in Au + Au collisions at s N N = 200 GeV from the STAR experiment
journal, August 2015


Dielectron production in Au + Au collisions at s N N = 200 GeV
journal, January 2016


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


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


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


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


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


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


Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
journal, March 2016


Measurement of dielectron production in central Pb-Pb collisions at s NN = 2.76 TeV
journal, February 2019


Bulk properties of the medium produced in relativistic heavy-ion collisions from the beam energy scan program
journal, October 2017


Systematic measurements of identified particle spectra in pp , d + Au , and Au + Au collisions at the STAR detector
journal, March 2009


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

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


Energy dependence of J/ψ production in Au + Au collisions at s N N = 39 , 62.4  and  200 GeV
journal, August 2017


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


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


Narrowing the uncertainty on the total charm cross section and its effect on the J / ψ cross section
journal, January 2013


Forward Cross Sections for Production of D + , D 0 , D s , D * + , and Λ c in 250 GeV π ± , K ± , and p Interactions with Nuclei
journal, September 1996


Charmed and bottom flavoured particle production in hadronic interactions
journal, November 1987


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


Measurement of High- p T Single Electrons from Heavy-Flavor Decays in p + p Collisions at s = 200 GeV
journal, December 2006


Glauber Modeling in High-Energy Nuclear Collisions
journal, November 2007


Thermal dileptons as fireball thermometer and chronometer
journal, February 2016


Coarse-graining approach for dilepton production at energies available at the CERN Super Proton Synchrotron
journal, May 2015


Energy, centrality, and momentum dependence of dielectron production at collider energies in a coarse-grained transport approach
journal, August 2016


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


Thermal Dileptons from Hot and Dense Strongly Interacting Matter
conference, January 2010

  • Specht, Hans J.; Nieves, Juan M.; Oset, Eulogio
  • INTERNATIONAL WORKSHOP ON CHIRAL SYMMETRY IN HADRONS AND NUCLEI, AIP Conference Proceedings
  • DOI: 10.1063/1.3541982

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