Strange hadron production in collisions at , 11.5, 19.6, 27, and 39 GeV
Abstract
We present STAR measurements of strange hadron ( , and ) production at midrapidity ( ) in collisions at = 7.7–39 GeV from the Beam Energy Scan Program at the Relativistic Heavy Ion Collider (RHIC). Transverse-momentum spectra, averaged transverse mass, and the overall integrated yields of these strange hadrons are presented versus the centrality and collision energy. Antibaryon-to-baryon ratios ( ) are presented as well and used to test a thermal statistical model and to extract the temperature normalized strangeness and baryon chemical potentials at hadronic freeze-out ( and ) in central collisions. Strange baryon-to-pion ratios are compared to various model predictions in central collisions for all energies. The nuclear modification factors ( ) and antibaryon-to-meson ratios as a function of transverse momentum are presented for all collision energies. The shows no suppression for up to 3.5 at energies of 7.7 and 11.5 GeV. The ratio also shows baryon-to-meson enhancement at intermediate ( ) in central collisions at energies above 19.6 GeV. Finally, both observations suggest that there is likely a change of the underlying strange quark dynamics at collision energies below 19.6 GeV.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Texas A & M Univ., College Station, TX (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Org.:
- STAR Collaboration
- OSTI Identifier:
- 1644012
- Alternate Identifier(s):
- OSTI ID: 1529065; OSTI ID: 1713251; OSTI ID: 1787636
- Report Number(s):
- BNL-216203-2020-JAAM; BNL-211792-2019-JAAM
Journal ID: ISSN 2469-9985; TRN: US2201987
- Grant/Contract Number:
- SC0012704; SC0015636; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. C
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: 3; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Particle & resonance production; QCD phase transitions; Relativistic heavy-ion collisions
Citation Formats
Adam, Jaroslav, Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Atetalla, F., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Bassill, A. J., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bryslawskyj, J., Bunzarov, I., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H, Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Crawford, H. J., Csanád, M., Das, S., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Gopal, K., Grosnick, D., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Herrmann, N., Holub, L., Hong, Y., Horvat, S., Huang, B., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kim, C., Kinghorn, T. A., Kisel, I., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Kulathunga Mudiyanselage, N., Kumar, L., Kunnawalkam Elayavalli, R., Kwasizur, J. H., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lipiec, A., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, P., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Matonoha, O., Mazer, J. A., Meehan, K., Mei, J. C., Minaev, N. G., Mioduszewski, S., Mishra, D., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nasim, Md, Nayak, K., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, K., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Panebratsev, Y., Pawlik, B., Pawlowska, D., Pei, H., Perkins, C., Pintér, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Schambach, J., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Siejka, S., Sikora, R., Simko, M., Singh, J., Singha, S., Smirnov, D., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. S., Stefaniak, M., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. P., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, B., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, P., Wang, Y., Wang, Y., Webb, J. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Yang, Z., Ye, Z., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, L., Zhang, S., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M., and Zyzak, M. Strange hadron production in Au + Au collisions at s N N = 7.7 , 11.5, 19.6, 27, and 39 GeV. United States: N. p., 2020.
Web. doi:10.1103/physrevc.102.034909.
Adam, Jaroslav, Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Atetalla, F., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Bassill, A. J., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bryslawskyj, J., Bunzarov, I., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H, Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Crawford, H. J., Csanád, M., Das, S., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Gopal, K., Grosnick, D., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Herrmann, N., Holub, L., Hong, Y., Horvat, S., Huang, B., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kim, C., Kinghorn, T. A., Kisel, I., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Kulathunga Mudiyanselage, N., Kumar, L., Kunnawalkam Elayavalli, R., Kwasizur, J. H., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lipiec, A., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, P., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Matonoha, O., Mazer, J. A., Meehan, K., Mei, J. C., Minaev, N. G., Mioduszewski, S., Mishra, D., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nasim, Md, Nayak, K., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, K., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Panebratsev, Y., Pawlik, B., Pawlowska, D., Pei, H., Perkins, C., Pintér, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Schambach, J., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Siejka, S., Sikora, R., Simko, M., Singh, J., Singha, S., Smirnov, D., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. S., Stefaniak, M., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. P., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, B., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, P., Wang, Y., Wang, Y., Webb, J. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Yang, Z., Ye, Z., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, L., Zhang, S., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M., & Zyzak, M. Strange hadron production in Au + Au collisions at s N N = 7.7 , 11.5, 19.6, 27, and 39 GeV. United States. https://doi.org/10.1103/physrevc.102.034909
Adam, Jaroslav, Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Atetalla, F., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Bassill, A. J., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bryslawskyj, J., Bunzarov, I., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H, Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Crawford, H. J., Csanád, M., Das, S., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Gopal, K., Grosnick, D., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Herrmann, N., Holub, L., Hong, Y., Horvat, S., Huang, B., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kim, C., Kinghorn, T. A., Kisel, I., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Kulathunga Mudiyanselage, N., Kumar, L., Kunnawalkam Elayavalli, R., Kwasizur, J. H., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lipiec, A., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, P., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Matonoha, O., Mazer, J. A., Meehan, K., Mei, J. C., Minaev, N. G., Mioduszewski, S., Mishra, D., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nasim, Md, Nayak, K., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, K., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Panebratsev, Y., Pawlik, B., Pawlowska, D., Pei, H., Perkins, C., Pintér, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Schambach, J., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Siejka, S., Sikora, R., Simko, M., Singh, J., Singha, S., Smirnov, D., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. S., Stefaniak, M., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. P., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, B., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, P., Wang, Y., Wang, Y., Webb, J. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Yang, Z., Ye, Z., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, L., Zhang, S., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M., and Zyzak, M. Tue .
"Strange hadron production in Au + Au collisions at s N N = 7.7 , 11.5, 19.6, 27, and 39 GeV". United States. https://doi.org/10.1103/physrevc.102.034909. https://www.osti.gov/servlets/purl/1644012.
@article{osti_1644012,
title = {Strange hadron production in Au + Au collisions at s N N = 7.7 , 11.5, 19.6, 27, and 39 GeV},
author = {Adam, Jaroslav and Adamczyk, L. and Adams, J. R. and Adkins, J. K. and Agakishiev, G. and Aggarwal, M. M. and Ahammed, Z. and Alekseev, I. and Anderson, D. M. and Aoyama, R. and Aparin, A. and Arkhipkin, D. and Aschenauer, E. C. and Ashraf, M. U. and Atetalla, F. and Attri, A. and Averichev, G. S. and Bairathi, V. and Barish, K. and Bassill, A. J. and Behera, A. and Bellwied, R. and Bhasin, A. and Bhati, A. K. and Bielcik, J. and Bielcikova, J. and Bland, L. C. and Bordyuzhin, I. G. and Brandenburg, J. D. and Brandin, A. V. and Bryslawskyj, J. and Bunzarov, I. and Butterworth, J. and Caines, H. and Calderón de la Barca Sánchez, M. and Cebra, D. and Chakaberia, I. and Chaloupka, P. and Chan, B. K. and Chang, F-H and Chang, Z. and Chankova-Bunzarova, N. and Chatterjee, A. and Chattopadhyay, S. and Chen, J. H. and Chen, X. and Cheng, J. and Cherney, M. and Christie, W. and Crawford, H. J. and Csanád, M. and Das, S. and Dedovich, T. G. and Deppner, I. M. and Derevschikov, A. A. and Didenko, L. and Dilks, C. and Dong, X. and Drachenberg, J. L. and Dunlop, J. C. and Edmonds, T. and Elsey, N. and Engelage, J. and Eppley, G. and Esha, R. and Esumi, S. and Evdokimov, O. and Ewigleben, J. and Eyser, O. and Fatemi, R. and Fazio, S. and Federic, P. and Fedorisin, J. and Feng, Y. and Filip, P. and Finch, E. and Fisyak, Y. and Fulek, L. and Gagliardi, C. A. and Galatyuk, T. and Geurts, F. and Gibson, A. and Gopal, K. and Grosnick, D. and Gupta, A. and Guryn, W. and Hamad, A. I. and Hamed, A. and Harris, J. W. and He, L. and Heppelmann, S. and Heppelmann, S. and Herrmann, N. and Holub, L. and Hong, Y. and Horvat, S. and Huang, B. and Huang, H. Z. and Huang, S. L. and Huang, T. and Huang, X. and Humanic, T. J. and Huo, P. and Igo, G. and Jacobs, W. W. and Jena, C. and Jentsch, A. and Ji, Y. and Jia, J. and Jiang, K. and Jowzaee, S. and Ju, X. and Judd, E. G. and Kabana, S. and Kagamaster, S. and Kalinkin, D. and Kang, K. and Kapukchyan, D. and Kauder, K. and Ke, H. W. and Keane, D. and Kechechyan, A. and Kelsey, M. and Khyzhniak, Y. V. and Kikoła, D. P. and Kim, C. and Kinghorn, T. A. and Kisel, I. and Kisiel, A. and Kocan, M. and Kochenda, L. and Kosarzewski, L. K. and Kramarik, L. and Kravtsov, P. and Krueger, K. and Kulathunga Mudiyanselage, N. and Kumar, L. and Kunnawalkam Elayavalli, R. and Kwasizur, J. H. and Lacey, R. and Landgraf, J. M. and Lauret, J. and Lebedev, A. and Lednicky, R. and Lee, J. H. and Li, C. and Li, W. and Li, W. and Li, X. and Li, Y. and Liang, Y. and Licenik, R. and Lin, T. and Lipiec, A. and Lisa, M. A. and Liu, F. and Liu, H. and Liu, P. and Liu, P. and Liu, T. and Liu, X. and Liu, Y. and Liu, Z. and Ljubicic, T. and Llope, W. J. and Lomnitz, M. and Longacre, R. S. and Luo, S. and Luo, X. and Ma, G. L. and Ma, L. and Ma, R. and Ma, Y. G. and Magdy, N. and Majka, R. and Mallick, D. and Margetis, S. and Markert, C. and Matis, H. S. and Matonoha, O. and Mazer, J. A. and Meehan, K. and Mei, J. C. and Minaev, N. 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G. and Upsal, I. and Van Buren, G. and Vanek, J. and Vasiliev, A. N. and Vassiliev, I. and Videbæk, F. and Vokal, S. and Voloshin, S. A. and Wang, F. and Wang, G. and Wang, P. and Wang, Y. and Wang, Y. and Webb, J. C. and Wen, L. and Westfall, G. D. and Wieman, H. and Wissink, S. W. and Witt, R. and Wu, Y. and Xiao, Z. G. and Xie, G. and Xie, W. and Xu, H. and Xu, N. and Xu, Q. H. and Xu, Y. F. and Xu, Z. and Yang, C. and Yang, Q. and Yang, S. and Yang, Y. and Yang, Z. and Ye, Z. and Ye, Z. and Yi, L. and Yip, K. and Yoo, I. -K. and Zbroszczyk, H. and Zha, W. and Zhang, D. and Zhang, L. and Zhang, S. and Zhang, S. and Zhang, X. P. and Zhang, Y. and Zhang, Z. and Zhao, J. and Zhong, C. and Zhou, C. and Zhu, X. and Zhu, Z. and Zurek, M. and Zyzak, M.},
abstractNote = {We present STAR measurements of strange hadron (KS0, Λ, Λ¯, Ξ-, Ξ¯+, Ω-, Ω¯+, and Φ) production at midrapidity (|y|<0.5) in Au+Au collisions at sNN = 7.7–39 GeV from the Beam Energy Scan Program at the Relativistic Heavy Ion Collider (RHIC). Transverse-momentum spectra, averaged transverse mass, and the overall integrated yields of these strange hadrons are presented versus the centrality and collision energy. Antibaryon-to-baryon ratios (Λ¯/Λ, Ξ¯+/Ξ-, Ω¯+/Ω-) are presented as well and used to test a thermal statistical model and to extract the temperature normalized strangeness and baryon chemical potentials at hadronic freeze-out (μB/Tch and μS/Tch) in central collisions. Strange baryon-to-pion ratios are compared to various model predictions in central collisions for all energies. The nuclear modification factors (RCP) and antibaryon-to-meson ratios as a function of transverse momentum are presented for all collision energies. The KS0 RCP shows no suppression for pT up to 3.5 GeV/c at energies of 7.7 and 11.5 GeV. The Λ¯/KS0 ratio also shows baryon-to-meson enhancement at intermediate pT (≈2.5 GeV/c) in central collisions at energies above 19.6 GeV. Finally, both observations suggest that there is likely a change of the underlying strange quark dynamics at collision energies below 19.6 GeV.},
doi = {10.1103/physrevc.102.034909},
journal = {Physical Review. C},
number = 3,
volume = 102,
place = {United States},
year = {Tue Sep 29 00:00:00 EDT 2020},
month = {Tue Sep 29 00:00:00 EDT 2020}
}
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