Measurement of Sequential ϒ Suppression in Au+Au Collisions at sqrt[s_{NN}]=200 GeV with the STAR Experiment
Affiliations
- 1 Texas A&M University, College Station, Texas 77843.
- 2 Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
- 3 AGH University of Science and Technology, FPACS, Cracow 30-059, Poland.
- 4 The Ohio State University, Columbus, Ohio 43210.
- 5 Panjab University, Chandigarh 160014, India.
- 6 Variable Energy Cyclotron Centre, Kolkata 700064, India.
- 7 Brookhaven National Laboratory, Upton, New York 11973.
- 8 Abilene Christian University, Abilene, Texas 79699.
- 9 Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile.
- 10 University of California, Riverside, California 92521.
- 11 University of Houston, Houston, Texas 77204.
- 12 University of Jammu, Jammu 180001, India.
- 13 State University of New York, Stony Brook, New York 11794.
- 14 Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic.
- 15 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800.
- 16 Yale University, New Haven, Connecticut 06520.
- 17 University of California, Davis, California 95616.
- 18 Lawrence Berkeley National Laboratory, Berkeley, California 94720.
- 19 University of California, Los Angeles, California 90095.
- 20 Indiana University, Bloomington, Indiana 47408.
- 21 Shandong University, Qingdao, Shandong 266237.
- 22 Fudan University, Shanghai 200433.
- 23 Tsinghua University, Beijing 100084.
- 24 University of California, Berkeley, California 94720.
- 25 ELTE Eötvös Loránd University, Budapest, Hungary H-1117.
- 26 University of Illinois at Chicago, Chicago, Illinois 60607.
- 27 University of Heidelberg, Heidelberg 69120, Germany.
- 28 Wayne State University, Detroit, Michigan 48201.
- 29 Indian Institute of Science Education and Research (IISER), Berhampur 760010, India.
- 30 Kent State University, Kent, Ohio 44242.
- 31 Rice University, Houston, Texas 77251.
- 32 University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
- 33 Lehigh University, Bethlehem, Pennsylvania 18015.
- 34 University of Kentucky, Lexington, Kentucky 40506-0055.
- 35 University of Calabria & INFN-Cosenza, Rende 87036, Italy.
- 36 National Cheng Kung University, Tainan 70101.
- 37 Purdue University, West Lafayette, Indiana 47907.
- 38 Southern Connecticut State University, New Haven, Connecticut 06515.
- 39 Central China Normal University, Wuhan, Hubei 430079.
- 40 Technische Universität Darmstadt, Darmstadt 64289, Germany.
- 41 Temple University, Philadelphia, Pennsylvania 19122.
- 42 Valparaiso University, Valparaiso, Indiana 46383.
- 43 Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
- 44 American University of Cairo, New Cairo 11835, New Cairo, Egypt.
- 45 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000.
- 46 University of Science and Technology of China, Hefei, Anhui 230026.
- 47 Warsaw University of Technology, Warsaw 00-661, Poland.
- 48 Frankfurt Institute for Advanced Studies FIAS, Frankfurt 60438, Germany.
- 49 National Institute of Science Education and Research, HBNI, Jatni 752050, India.
- 50 University of Texas, Austin, Texas 78712.
- 51 Rutgers University, Piscataway, New Jersey 08854.
- 52 Institute of Nuclear Physics PAN, Cracow 31-342, Poland.
- 53 Max-Planck-Institut für Physik, Munich 80805, Germany.
- 54 Creighton University, Omaha, Nebraska 68178.
- 55 Indian Institute Technology, Patna, Bihar 801106, India.
- 56 Ball State University, Muncie, Indiana 47306.
- 57 Universidade de São Paulo, São Paulo, Brazil 05314-970.
- 58 Huzhou University, Huzhou, Zhejiang 313000.
- 59 Michigan State University, East Lansing, Michigan 48824.
- 60 Argonne National Laboratory, Argonne, Illinois 60439.
- 61 United States Naval Academy, Annapolis, Maryland 21402.
- 62 South China Normal University, Guangzhou, Guangdong 510631.
- PMID: 37001106
- DOI: 10.1103/PhysRevLett.130.112301
Measurement of Sequential ϒ Suppression in Au+Au Collisions at sqrt[s_{NN}]=200 GeV with the STAR Experiment
Authors
Affiliations
- 1 Texas A&M University, College Station, Texas 77843.
- 2 Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
- 3 AGH University of Science and Technology, FPACS, Cracow 30-059, Poland.
- 4 The Ohio State University, Columbus, Ohio 43210.
- 5 Panjab University, Chandigarh 160014, India.
- 6 Variable Energy Cyclotron Centre, Kolkata 700064, India.
- 7 Brookhaven National Laboratory, Upton, New York 11973.
- 8 Abilene Christian University, Abilene, Texas 79699.
- 9 Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile.
- 10 University of California, Riverside, California 92521.
- 11 University of Houston, Houston, Texas 77204.
- 12 University of Jammu, Jammu 180001, India.
- 13 State University of New York, Stony Brook, New York 11794.
- 14 Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic.
- 15 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800.
- 16 Yale University, New Haven, Connecticut 06520.
- 17 University of California, Davis, California 95616.
- 18 Lawrence Berkeley National Laboratory, Berkeley, California 94720.
- 19 University of California, Los Angeles, California 90095.
- 20 Indiana University, Bloomington, Indiana 47408.
- 21 Shandong University, Qingdao, Shandong 266237.
- 22 Fudan University, Shanghai 200433.
- 23 Tsinghua University, Beijing 100084.
- 24 University of California, Berkeley, California 94720.
- 25 ELTE Eötvös Loránd University, Budapest, Hungary H-1117.
- 26 University of Illinois at Chicago, Chicago, Illinois 60607.
- 27 University of Heidelberg, Heidelberg 69120, Germany.
- 28 Wayne State University, Detroit, Michigan 48201.
- 29 Indian Institute of Science Education and Research (IISER), Berhampur 760010, India.
- 30 Kent State University, Kent, Ohio 44242.
- 31 Rice University, Houston, Texas 77251.
- 32 University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
- 33 Lehigh University, Bethlehem, Pennsylvania 18015.
- 34 University of Kentucky, Lexington, Kentucky 40506-0055.
- 35 University of Calabria & INFN-Cosenza, Rende 87036, Italy.
- 36 National Cheng Kung University, Tainan 70101.
- 37 Purdue University, West Lafayette, Indiana 47907.
- 38 Southern Connecticut State University, New Haven, Connecticut 06515.
- 39 Central China Normal University, Wuhan, Hubei 430079.
- 40 Technische Universität Darmstadt, Darmstadt 64289, Germany.
- 41 Temple University, Philadelphia, Pennsylvania 19122.
- 42 Valparaiso University, Valparaiso, Indiana 46383.
- 43 Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
- 44 American University of Cairo, New Cairo 11835, New Cairo, Egypt.
- 45 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000.
- 46 University of Science and Technology of China, Hefei, Anhui 230026.
- 47 Warsaw University of Technology, Warsaw 00-661, Poland.
- 48 Frankfurt Institute for Advanced Studies FIAS, Frankfurt 60438, Germany.
- 49 National Institute of Science Education and Research, HBNI, Jatni 752050, India.
- 50 University of Texas, Austin, Texas 78712.
- 51 Rutgers University, Piscataway, New Jersey 08854.
- 52 Institute of Nuclear Physics PAN, Cracow 31-342, Poland.
- 53 Max-Planck-Institut für Physik, Munich 80805, Germany.
- 54 Creighton University, Omaha, Nebraska 68178.
- 55 Indian Institute Technology, Patna, Bihar 801106, India.
- 56 Ball State University, Muncie, Indiana 47306.
- 57 Universidade de São Paulo, São Paulo, Brazil 05314-970.
- 58 Huzhou University, Huzhou, Zhejiang 313000.
- 59 Michigan State University, East Lansing, Michigan 48824.
- 60 Argonne National Laboratory, Argonne, Illinois 60439.
- 61 United States Naval Academy, Annapolis, Maryland 21402.
- 62 South China Normal University, Guangzhou, Guangdong 510631.
- PMID: 37001106
- DOI: 10.1103/PhysRevLett.130.112301
Abstract
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_{AA}), which quantify the level of yield suppression in heavy-ion collisions compared to p+p collisions, for ϒ(1S) and ϒ(2S) 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(3S) R_{AA} is 0.17 at a 95% confidence level. This provides experimental evidence that the ϒ(3S) is significantly more suppressed than the ϒ(1S) at RHIC. The level of suppression for ϒ(1S) is comparable to that observed at the much higher collision energy at the Large Hadron Collider. These results point to the creation of a medium at RHIC whose temperature is sufficiently high to strongly suppress excited ϒ states.