Influence of statistics on the measured moments of conserved quantities in relativistic heavy ion collisions

被引：5
作者：
Chen, Lizhu [1 ,2 ,3 ]
Li, Zhiming [2 ,3 ]
Zhong, Xia [1 ]
He, Yuncun [4 ]
Wu, Yuanfang [2 ,3 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Sch Phys & Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China
[2] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China
[3] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China
[4] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430079, Peoples R China
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2015年 / 42卷 / 06期
关键词：
statistics; probability distribution; moments of conserved quantities; QCD PHASE-TRANSITION; FREEZE-OUT; FLUCTUATIONS;
D O I：
10.1088/0954-3899/42/6/065103
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 study statistics dependence of the probability distributions and the means of measured moments of conserved quantities, respectively. The required statistics of all interested moments and their products are estimated based on a simple simulation. We also explain why the measured moments are underestimated when the statistics are insufficient. With the statistics at RHIC/BES, the second and third order moments can be reliably obtained based on the method of centrality bin width correction (CBWC), which can not be applied for the fourth order moments at low energy. With planning statistics at RHIC/BES II, and improved CBWC method, kappa sigma(2) in a finer centrality bin scale should be measurable. This will help us to understand the current observation of energy and centrality dependence of high-order moments.
引用
收藏
页数：10
相关论文
共 25 条
  • [1] Abelev B I, 2009, PHYS REV C, V103, P92301
  • [2] Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC
    Adamczyk, L.
    Adkins, J. K.
    Agakishiev, G.
    Aggarwal, M. M.
    Ahammed, Z.
    Alekseev, I.
    Alford, J.
    Anson, C. D.
    Aparin, A.
    Arkhipkin, D.
    Aschenauer, E. C.
    Averichev, G. S.
    Balewski, J.
    Banerjee, A.
    Bamovska, Z.
    Beavis, D. R.
    Bellwied, R.
    Bhasin, A.
    Bhati, A. K.
    Bhattarai, P.
    Bichsel, H.
    Bielcik, J.
    Bielcikova, J.
    Bland, L. C.
    Bordyuzhin, I. G.
    Borowski, W.
    Bouchet, J.
    Brandin, A. V.
    Brovko, S. G.
    Bueltmann, S.
    Bunzarov, I.
    Burton, T. P.
    Butterworth, J.
    Caines, H.
    de la Barca Sanchez, M. Calderon
    Cebra, D.
    Cendejas, R.
    Cervantes, M. C.
    Chaloupka, P.
    Chang, Z.
    Chattopadhyay, S.
    Chen, H. E.
    Chen, J. H.
    Chen, L.
    Cheng, J.
    Chemey, M.
    Chikanian, A.
    Christie, W.
    Chwastowski, J.
    Codrington, M. J. M.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 112 (03)
  • [3] Elliptic flow of identified hadrons in Au + Au collisions at √sNN=7.7-62.4 GeV
    Adamczyk, L.
    Adkins, J. K.
    Agakishiev, G.
    Aggarwal, M. M.
    Ahammed, Z.
    Alekseev, I.
    Alford, J.
    Anson, C. D.
    Aparin, A.
    Arkhipkin, D.
    Aschenauer, E.
    Averichev, G. S.
    Balewski, J.
    Banerjee, A.
    Barnovska, Z.
    Beavis, D. R.
    Bellwied, R.
    Betancourt, M. J.
    Betts, R. R.
    Bhasin, A.
    Bhati, A. K.
    Bhattarai, P.
    Bichsel, H.
    Bielcik, J.
    Bielcikova, J.
    Bland, L. C.
    Bordyuzhin, I. G.
    Borowski, W.
    Bouchet, J.
    Brandin, A. V.
    Brovko, S. G.
    Bruna, E.
    Bueltmann, S.
    Bunzarov, I.
    Burton, T. P.
    Butterworth, J.
    Cai, X. Z.
    Caines, H.
    Sanchez, M. Calderon de la Barca
    Cebra, D.
    Cendejas, R.
    Cervantes, M. C.
    Chaloupka, P.
    Chang, Z.
    Chattopadhyay, S.
    Chen, H. F.
    Chen, J. H.
    Chen, J. Y.
    Chen, L.
    Cheng, J.
    [J]. PHYSICAL REVIEW C, 2013, 88 (01):
  • [4] Higher Moments of Net Proton Multiplicity Distributions at RHIC
    Aggarwal, M. M.
    Ahammed, Z.
    Alakhverdyants, A. V.
    Alekseev, I.
    Alford, J.
    Anderson, B. D.
    Arkhipkin, D.
    Averichev, G. S.
    Balewski, J.
    Barnby, L. S.
    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.
    Braidot, E.
    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.
    Chen, J. Y.
    Cheng, J.
    Cherney, M.
    Chikanian, A.
    Choi, K. E.
    Christie, W.
    Chung, P.
    [J]. PHYSICAL REVIEW LETTERS, 2010, 105 (02)
  • [5] Aggarwal M. M., ARXIV10072613 STAR C
  • [6] Freeze-Out Conditions in Heavy Ion Collisions from QCD Thermodynamics
    Bazavov, A.
    Ding, H. -T.
    Hegde, P.
    Kaczmarek, O.
    Karsch, F.
    Laermann, E.
    Mukherjee, Swagato
    Petreczky, P.
    Schmidt, C.
    Smith, D.
    Soeldner, W.
    Wagner, M.
    [J]. PHYSICAL REVIEW LETTERS, 2012, 109 (19)
  • [7] Net-proton probability distribution in heavy ion collisions
    Braun-Munzinger, P.
    Friman, B.
    Karsch, F.
    Redlich, K.
    Skokov, V.
    [J]. PHYSICAL REVIEW C, 2011, 84 (06):
  • [8] Baryon number conservation and the cumulants of the net proton distribution
    Bzdak, A.
    Koch, V.
    Skokov, V.
    [J]. PHYSICAL REVIEW C, 2013, 87 (01):
  • [9] Acceptance corrections to net baryon and net charge cumulants
    Bzdak, Adam
    Koch, Volker
    [J]. PHYSICAL REVIEW C, 2012, 86 (04):
  • [10] Cebra D, 2014, CRITICAL POINT ONSET
123