Higher Moments of Net-proton Multiplicity Distributions at RHIC
Nuclear Experiment
2012-08-27 v2 High Energy Physics - Experiment
High Energy Physics - Lattice
High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We report the first measurements of the kurtosis (\kappa), skewness (S) and variance (\sigma^2) of net-proton multiplicity (N_p - N_pbar) distributions at midrapidity for Au+Au collisions at \sqrt(s_NN) = 19.6, 62.4, and 200 GeV corresponding to baryon chemical potentials (\mu_B) between 200 - 20 MeV. Our measurements of the products \kappa \sigma^2 and S \sigma, which can be related to theoretical calculations sensitive to baryon number susceptibilities and long range correlations, are constant as functions of collision centrality. We compare these products with results from lattice QCD and various models without a critical point and study the \sqrt(s_NN) dependence of \kappa \sigma^2. From the measurements at the three beam energies, we find no evidence for a critical point in the QCD phase diagram for \mu_B below 200 MeV.
Keywords
Cite
@article{arxiv.1004.4959,
title = {Higher Moments of Net-proton Multiplicity Distributions at RHIC},
author = {M. M. Aggarwal and Z. Ahammed and A. V. Alakhverdyants and I. Alekseev and J. Alford and B. D. Anderson and D. Arkhipkin and G. S. Averichev and J. Balewski and L. S. Barnby and S. Baumgart and D. R. Beavis and R. Bellwied and M. J. Betancourt and R. R. Betts and A. Bhasin and A. K. Bhati and H. Bichsel and J. Bielcik and J. Bielcikova and B. Biritz and L. C. Bland and 3 B. E. Bonner and J. Bouchet and E. Braidot and A. V. Brandin and A. Bridgeman and E. Bruna and S. Bueltmann and I. Bunzarov and T. P. Burton and X. Z. Cai and H. Caines and M. Calderón de la Barca Sánchez and O. Catu and D. Cebra and R. Cendejas and M. C. Cervantes and Z. Chajecki and P. Chaloupka and S. Chattopadhyay and H. F. Chen and J. H. Chen and J. Y. Chen and J. Cheng and M. Cherney and A. Chikanian and K. E. Choi and W. Christie and P. Chung and R. F. Clarke and M. J. M. Codrington and R. Corliss and J. G. Cramer and H. J. Crawford and D. Das and S. Dash and A. Davila Leyva and L. C. De Silva and R. R. Debbe and T. G. Dedovich and A. A. Derevschikov and R. Derradi de Souza and L. Didenko and P. Djawotho and S. M. Dogra and X. Dong and J. L. Drachenberg and J. E. Draper and J. C. Dunlop and M. R. Dutta Mazumdar and L. G. Efimov and E. Elhalhuli and M. Elnimr and J. Engelage and G. Eppley and B. Erazmus and M. Estienne and L. Eun and O. Evdokimov and P. Fachini and R. Fatemi and J. Fedorisin and R. G. Fersch and P. Filip and E. Finch and V. Fine and Y. Fisyak and C. A. Gagliardi and D. R. Gangadharan and M. S. Ganti and E. J. Garcia-Solis and A. Geromitsos and F. Geurts and V. Ghazikhanian and P. Ghosh and Y. N. Gorbunov and A. Gordon and O. Grebenyuk and D. Grosnick and S. M. Guertin and A. Gupta and N. Gupta and W. Guryn and B. Haag and A. Hamed and L-X. Han and J. W. Harris and J. P. Hays-Wehle and M. Heinz and S. Heppelmann and A. Hirsch and E. Hjort and A. M. Hoffman and G. W. Hoffmann and D. J. Hofman and B. Huang and H. Z. Huang and T. J. Humanic and L. Huo and G. Igo and P. Jacobs and W. W. Jacobs and C. Jena and F. Jin and C. L. Jones and P. G. Jones and J. Joseph and E. G. Judd and S. Kabana and K. Kajimoto and K. Kang and J. Kapitan and K. Kauder and D. Keane and A. Kechechyan and D. Kettler and D. P. Kikola and J. Kiryluk and A. Kisiel and S. R. Klein and A. G. Knospe and A. Kocoloski and D. D. Koetke and T. Kollegger and J. Konzer and I. Koralt and L. Koroleva and W. Korsch and L. Kotchenda and V. Kouchpil and P. Kravtsov and K. Krueger and M. Krus and L. Kumar and P. Kurnadi and M. A. C. Lamont and J. M. Landgraf and S. LaPointe and J. Lauret and A. Lebedev and R. Lednicky and C-H. Lee and J. H. Lee and W. Leight and M. J. LeVine and C. Li and L. Li and N. Li and W. Li and X. Li and X. Li and Y. Li and Z. M. Li and G. Lin and S. J. Lindenbaum and M. A. Lisa and F. Liu and H. Liu and J. Liu and T. Ljubicic and W. J. Llope and R. S. Longacre and W. A. Love and Y. Lu and E. V. Lukashov and X. Luo and G. L. Ma and Y. G. Ma and D. P. Mahapatra and R. Majka and O. I. Mall and L. K. Mangotra and R. Manweiler and S. Margetis and C. Markert and H. Masui and H. S. Matis and Yu. A. Matulenko and D. McDonald and T. S. McShane and A. Meschanin and R. Milner and N. G. Minaev and S. Mioduszewski and A. Mischke and M. K. Mitrovski and B. Mohanty and M. M. Mondal. B. Morozov and D. A. Morozov and M. G. Munhoz and B. K. Nandi and C. Nattrass and T. K. Nayak and J. M. Nelson and P. K. Netrakanti and M. J. Ng and L. V. Nogach and S. B. Nurushev and G. Odyniec and A. Ogawa and V. Okorokov and E. W. Oldag and D. Olson and M. Pachr and B. S. Page and S. K. Pal and Y. Pandit and Y. Panebratsev and T. Pawlak and T. Peitzmann and V. Perevoztchikov and C. Perkins and W. Peryt and S. C. Phatak and P. Pile and M. Planinic and M. A. Ploskon and J. Pluta and D. Plyku and N. Poljak and A. M. Poskanzer and B. V. K. S. Potukuchi and C. B. Powell and D. Prindle and C. Pruneau and N. K. Pruthi and P. R. Pujahari and J. Putschke and H. Qiu and R. Raniwala and S. Raniwala and R. L. Ray and R. Redwine and R. Reed and H. G. Ritter and J. B. Roberts and O. V. Rogachevsky and J. L. Romero and A. Rose and C. Roy and L. Ruan and R. Sahoo and S. Sakai and I. Sakrejda and T. Sakuma and S. Salur and J. Sandweiss and E. Sangaline and J. Schambach and R. P. Scharenberg and N. Schmitz and T. R. Schuster and J. Seele and J. Seger and I. Selyuzhenkov and P. Seyboth and E. Shahaliev and M. Shao and M. Sharma and S. S. Shi and E. P. Sichtermann and F. Simon and R. N. Singaraju and M. J. Skoby and N. Smirnov and P. Sorensen and J. Sowinski and H. M. Spinka and B. Srivastava and T. D. S. Stanislaus and D. Staszak and J. R. Stevens and R. Stock and M. Strikhanov and B. Stringfellow and A. A. P. Suaide and M. C. Suarez and N. L. Subba and M. Sumbera and X. M. Sun and Y. Sun and Z. Sun and B. Surrow and D. N. Svirida and T. J. M. Symons and A. Szanto de Toledo and J. Takahashi and A. H. Tang and Z. Tang and L. H. Tarini and T. Tarnowsky and D. Thein and J. H. Thomas and J. Tian and A. R. Timmins and S. Timoshenko and D. Tlusty and M. Tokarev and V. N. Tram and S. Trentalange and R. E. Tribble and O. D. Tsai and J. Ulery and T. Ullrich and D. G. Underwood and G. Van Buren and M. van Leeuwen and G. van Nieuwenhuizen and J. A. Vanfossen, and R. Varma and G. M. S. Vasconcelos and A. N. Vasiliev and F. Videbaek and Y. P. Viyogi and S. Vokal and S. A. Voloshin and M. Wada and M. Walker and F. Wang and G. Wang and H. Wang and J. S. Wang and Q. Wang and X. L. Wang and Y. Wang and G. Webb and J. C. Webb and G. D. Westfall and C. Whitten and H. Wieman and S. W. Wissink and R. Witt and Y. F. Wu and W. Xie and H. Xu and N. Xu and Q. H. Xu and W. Xu and Y. Xu and Z. Xu and L. Xue and Y. Yang and P. Yepes and K. Yip and I-K. Yoo and Q. Yue and M. Zawisza and H. Zbroszczyk and W. Zhan and J. B. Zhang and S. Zhang and W. M. Zhang and X. P. Zhang and Y. Zhang and Z. P. Zhang and J. Zhao and C. Zhong and J. Zhou and W. Zhou and X. Zhu and Y. H. Zhu and R. Zoulkarneev and Y. Zoulkarneeva},
journal= {arXiv preprint arXiv:1004.4959},
year = {2012}
}
Comments
6 pages and 4 figures. Version accepted for publication in Physical Review Letters