Strange hadron production in Au plus Au collisions at √SNN=7.7, 11.5, 19.6, 27, and 39 GeV

被引：72

作者：

Adam, J. ^{[6
]}

Adamczyk, L. ^{[2
]}

Adams, J. R. ^{[39
]}

Adkins, J. K. ^{[30
]}

Agakishiev, G. ^{[28
]}

Aggarwal, M. M. ^{[40
]}

Ahammed, Z. ^{[60
]}

Alekseev, I ^{[3
,35
]}

Anderson, D. M. ^{[54
]}

Aoyama, R. ^{[57
]}

Aparin, A. ^{[28
]}

Arkhipkin, D. ^{[6
]}

Aschenauer, E. C. ^{[6
]}

Ashraf, M. U. ^{[56
]}

Atetalla, F. ^{[29
]}

Attri, A. ^{[40
]}

Averichev, G. S. ^{[28
]}

Bairathi, V ^{[36
]}

Barish, K. ^{[10
]}

Bassill, A. J. ^{[10
]}

Behera, A. ^{[52
]}

Bellwied, R. ^{[20
]}

Bhasin, A. ^{[27
]}

Bhati, A. K. ^{[40
]}

Bielcik, J. ^{[14
]}

Bielcikova, J. ^{[38
]}

Bland, L. C. ^{[6
]}

Bordyuzhin, I. G. ^{[3
]}

Brandenburg, J. D. ^{[6
,49
]}

Brandin, A., V ^{[35
]}

Bryslawskyj, J. ^{[10
]}

Bunzarov, I ^{[28
]}

Butterworth, J. ^{[45
]}

Caines, H. ^{[63
]}

de la Barca Sanchez, M. Calderon ^{[8
]}

Cebra, D. ^{[8
]}

Chakaberia, I ^{[6
,29
]}

Chaloupka, P. ^{[14
]}

Chan, B. K. ^{[9
]}

Chang, F-H ^{[37
]}

Chang, Z. ^{[6
]}

Chankova-Bunzarova, N. ^{[28
]}

Chatterjee, A. ^{[60
]}

Chattopadhyay, S. ^{[60
]}

Chen, J. H. ^{[18
]}

Chen, X. ^{[48
]}

Cheng, J. ^{[56
]}

Cherney, M. ^{[13
]}

Christie, W. ^{[6
]}

Crawford, H. J. ^{[7
]}

机构：

[1] Abilene Christian Univ, Abilene, TX 79699 USA

[2] AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland

[3] Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia

[4] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA

[5] Amer Univ Cairo, Cairo, Egypt

[6] Brookhaven Natl Lab, Upton, NY 11973 USA

[7] Univ Calif Berkeley, Berkeley, CA 94720 USA

[8] Univ Calif Davis, Davis, CA 95616 USA

[9] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[10] Univ Calif Riverside, Riverside, CA 92521 USA

[11] Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China

[12] Univ Illinois, Chicago, IL 60607 USA

[13] Creighton Univ, Omaha, NE 68178 USA

[14] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic

[15] Tech Univ Darmstadt, D-64289 Darmstadt, Germany

[16] Eotvos Lorand Univ, H-1117 Budapest, Hungary

[17] Frankfurt Inst Adv Studies FIAS, D-60438 Frankfurt, Germany

[18] Fudan Univ, Shanghai 200433, Peoples R China

[19] Heidelberg Univ, D-69120 Heidelberg, Germany

[20] Univ Houston, Houston, TX 77204 USA

[21] Huzhou Univ, Huzhou 313000, Zhejiang, Peoples R China

[22] Indian Inst Sci Educ & Res IISER, Berhampur 760010, India

[23] Indian Inst Sci Educ & Res, Tirupati 517507, Andhra Pradesh, India

[24] Indian Inst Technol, Patna 801106, Bihar, India

[25] Indiana Univ, Bloomington, IN 47408 USA

[26] Inst Phys, Bhubaneswar 751005, India

[27] Univ Jammu, Jammu 180001, India

[28] Joint Inst Nucl Res, Dubna 141980, Russia

[29] Kent State Univ, Kent, OH 44242 USA

[30] Univ Kentucky, Lexington, KY 40506 USA

[31] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[32] Lehigh Univ, Bethlehem, PA 18015 USA

[33] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[34] Michigan State Univ, E Lansing, MI 48824 USA

[35] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[36] HBNI, Natl Inst Sci Educ & Res, Jatni 752050, India

[37] Natl Cheng Kung Univ, Tainan 70101, Taiwan

[38] CAS, Nucl Phys Inst, Rez 25068, Czech Republic

[39] Ohio State Univ, Columbus, OH 43210 USA

[40] Panjab Univ, Chandigarh 160014, India

[41] Penn State Univ, University Pk, PA 16802 USA

[42] NRC Kurchatov Inst, Inst High Energy Phys, Protvino 142281, Russia

[43] Purdue Univ, W Lafayette, IN 47907 USA

[44] Pusan Natl Univ, Pusan 46241, South Korea

[45] Rice Univ, Houston, TX 77251 USA

[46] Rutgers State Univ, Piscataway, NJ 08854 USA

[47] Univ Sao Paulo, BR-05314970 Sao Paulo, Brazil

[48] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

[49] Shandong Univ, Qingdao 266237, Shandong, Peoples R China

[50] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

来源：

PHYSICAL REVIEW C | 2020年 / 102卷 / 03期

基金：

中国国家自然科学基金; 美国国家科学基金会; 新加坡国家研究基金会;

关键词：

NUCLEUS-NUCLEUS COLLISIONS; PHI-MESON PRODUCTION; ENERGY-DEPENDENCE; LAMBDA PRODUCTION; AU+AU COLLISIONS; PARTICLE IDENTIFICATION; TRANSVERSE-MOMENTUM; HYPERON PRODUCTION; PB COLLISIONS; KAON;

D O I：

10.1103/PhysRevC.102.034909

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present STAR measurements of strange hadron (K-S(0), Lambda, (Lambda) over bar, Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+), and phi) production at midrapidity (vertical bar y vertical bar < 0.5) in Au + Au collisions at root S-NN = 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 (<(Lambda)over bar>/Lambda, (Xi) over bar (+)/Xi(-), (Omega) over bar (+)/Omega(-)) 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 (mu(B)/T-ch and mu(S)/T-ch) in central collisions. Strange baryon-to-pion ratios are compared to various model predictions in central collisions for all energies. The nuclear modification factors (R-CP) and antibaryon-to-meson ratios as a function of transverse momentum are presented for all collision energies. The K-S(0) R-CP shows no suppression for P-T up to 3.5 GeV/c at energies of 7.7 and 11.5 GeV. The (Lambda) over bar /K-S(0) ratio also shows baryon-to-meson enhancement at intermediate p(T) (approximate to 2.5 GeV/c) in central collisions at energies above 19.6 GeV. Both observations suggest that there is likely a change of the underlying strange quark dynamics at collision energies below 19.6 GeV.

引用

页数：25

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Averichev, G. S.
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Baumgart, S.
Beavis, D. R.
Bellwied, R.
Betancourt, M. J.
Betts, R. R.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bonner, B. E.
Bouchet, J.
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Brandin, A. V.
Bridgeman, A.
Bruna, E.
Bueltmann, S.
Bunzarov, I.
Burton, T. P.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
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Baumgart, S.
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Bellwied, R.
Benedosso, F.
Betancourt, M. J.
Betts, R. R.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bnzarov, I.
Bonner, B. E.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bridgeman, A.
Bruna, E.
Bueltmann, S.
Burton, T. P.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
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