Measurement of higher cumulants of net-charge multiplicity distributions in Au plus Au collisions at root s(NN)=7.7-200 GeV

  • Adare, A.
  • Afanasiev, S.
  • Aidala, C.
  • Ajitanand, N. N.
  • Akiba, Y.
  • ... Kim, Yong Kyun
  • 외 506명
Citations

WEB OF SCIENCE

79
Citations

SCOPUS

85

초록

We report the measurement of cumulants (C-n,n = 1, ..., 4) of the net-charge distributions measured within pseudorapidity (vertical bar eta vertical bar < 0.35) in Au + Au collisions at root s(NN) = 7.7-200 GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider. The ratios of cumulants (e.g., C-1/C-2, C-3/C-1) of the net-charge distributions, which can be related to volume independent susceptibility ratios, are studied as a function of centrality and energy. These quantities are important to understand the quantum-chromodynamics phase diagram and possible existence of a critical end point. The measured values are very well described by expectation from negative binomial distributions. We do not observe any nonmonotonic behavior in the ratios of the cumulants as a function of collision energy. The measured values of C-1/C-2 and C-3/C-1 can be directly compared to lattice quantum-chromodynamics calculations and thus allow extraction of both the chemical freeze-out temperature and the baryon chemical potential at each center-of-mass energy. The extracted baryon chemical potentials are in excellent agreement with a thermal-statistical analysis model.

키워드

FREEZE-OUT CONDITIONSHEAVY-ION COLLISIONSQCDMODELFLUCTUATIONSTRANSITIONMOMENTSDENSITYPROTON
제목
Measurement of higher cumulants of net-charge multiplicity distributions in Au plus Au collisions at root s(NN)=7.7-200 GeV
저자
Adare, A.Afanasiev, S.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Al-Bataineh, H.Alexander, J.Al-Ta'ani, H.Angerami, A.Aoki, K.Apadula, N.Aramaki, Y.Asano, H.Aschenauer, E. C.Atomssa, E. T.Averbeck, R.Awes, T. C.Azmoun, B.Babintsev, V.Bai, M.Baksay, G.Baksay, L.Bannier, B.Barish, K. N.Bassalleck, B.Basye, A. T.Bathe, S.Baublis, V.Baumann, C.Baumgart, S.Bazilevsky, A.Belikov, S.Belmont, R.Bennett, R.Berdnikov, A.Berdnikov, Y.Bickley, A. A.Black, D.Blau, D. S.Bok, J. S.Boyle, K.Brooks, M. L.Bryslawskyj, J.Buesching, H.Bumazhnov, V.Bunce, G.Butsyk, S.Camacho, C. M.Campbell, S.Castera, P.Chen, C. -H.Chi, C. Y.Chiu, M.Choi, I. J.Choi, J. B.Choi, S.Choudhury, R. K.Christiansen, P.Chujo, T.Chung, P.Chvala, O.Cianciolo, V.Citron, Z.Cole, B. A.Connors, M.Constantin, P.Cronin, N.Crossette, N.Csanad, M.Csoergo, T.Dahms, T.Dairaku, S.Danchev, I.Das, K.Datta, A.Daugherity, M. S.David, G.Dehmelt, K.Denisov, A.Deshpande, A.Desmond, E. J.Dharmawardane, K. V.Dietzsch, O.Ding, L.Dion, A.Do, J. 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DOI
10.1103/PhysRevC.93.011901
발행일
2016-01
유형
Article
저널명
Physical Review c
93
1
페이지
1 ~ 8

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