Measurement of Sequential ϒ Suppression in Au + Au Collisions at $$\sqrt{s_{NN}}$$ = 200 GeV with the STAR Experiment

Journal Article · Mon Mar 13 20:00:00 EDT 2023 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.130.112301 · OSTI ID:2959914

Aboona, B. E.; Adam, J.; Adamczyk, L.; Adams, J. R.; Aggarwal, I.; Aggarwal, M. M.; Ahammed, Z.; Anderson, D. M.; Aschenauer, E. C.; 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.; Cai, X. Z.; Caines, H.; Calderón de la Barca Sánchez, M.; Cebra, D.; Ceska, J.; Chakaberia, I.; Chaloupka, P.; Chan, B. K.; Chang, Z.; 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.; Gupta, A.; Guryn, W.; Hamed, A.; Han, Y.; Harabasz, S.; Harasty, M. D.; Harris, J. W.; Harrison, H.; He, W.; He, X. H.; He, Y.; Heppelmann, S.; Herrmann, N.; Holub, L.; Hu, C.; Hu, Q.; Hu, Y.; Huang, H.; Huang, H. Z.; Huang, S. L.; Huang, T.; Huang, X.; Huang, Y.; Huang, Y.; 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, 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, 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.; 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.; 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.; Nunes, A. S.; 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.; Romero, J. L.; 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, M.; 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. D. S.; Stefaniak, M.; Stewart, D. J.; Stringfellow, B.; Su, Y.; Suaide, A. 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, 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, 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.

We report on measurements of sequential ϒ suppression in Au+Au collisions at $$\sqrt{s_{NN}}$$ = 200  GeV with the STAR detector at the Relativistic Heavy Ion Collider (RHIC) through both the dielectron and dimuon decay channels. In the 0%–60% centrality class, the nuclear modification factors (𝑅_𝐴⁢𝐴), which quantify the level of yield suppression in heavy-ion collisions compared to 𝑝 + 𝑝 collisions, for ϒ⁡(1⁢𝑆) and ϒ⁡(2⁢𝑆) are 0.40 ± 0.03⁢(stat) ± 0.03⁢(sys) ± 0.09⁢(norm) and 0.26 ± 0.08⁢(stat) ± 0.02⁢(sys) ± 0.06⁢(norm), respectively, while the upper limit of the ϒ⁡(3⁢𝑆) 𝑅_𝐴⁢𝐴 is 0.17 at a 95% confidence level. This provides experimental evidence that the ϒ⁡(3⁢𝑆) is significantly more suppressed than the ϒ⁡(1⁢𝑆) at RHIC. The level of suppression for ϒ⁡(1⁢𝑆) is comparable to that observed at the much higher collision energy at the Large Hadron Collider. Furthermore, these results point to the creation of a medium at RHIC whose temperature is sufficiently high to strongly suppress excited ϒ states.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Texas A & M University, College Station, TX (United States); Texas A&M University, College Station, TX (United States); University of Illinois, Chicago, IL (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)
• Contributing Organization: STAR Collaboration
• Grant/Contract Number: AC02-76SF00515; FG02-94ER40865; SC0012704; SC0015636; SC0017982
• OSTI ID: 2959914
• Report Number(s): BNL--223168-2022-JAAM; BNL--223914-2023-JAAM
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 11 Vol. 130; ISSN 1079-7114; ISSN 0031-9007
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English