Higher moments of net proton multiplicity distributions at RHIC.
We report the first measurements of the kurtosis (κ), skewness (S), and variance (σ2) of net-proton multiplicity (Np-Np) distributions at midrapidity for Au+Au collisions at square root of s(NN)=19.6, 62.4, and 200 GeV corresponding to baryon chemical potentials (μB) between 200 and 20 MeV. Our measurements of the products κσ2 and Sσ, 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 square root of s(NN) dependence of κσ2. From the measurements at the three beam energies, we find no evidence for a critical point in the QCD phase diagram for μB below 200 MeV.
Aggarwal
M M
MM
Panjab University, Chandigarh 160014, India.
Ahammed
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Alakhverdyants
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Alekseev
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Alford
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Anderson
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Arkhipkin
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Averichev
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Balewski
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Barnby
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Baumgart
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Beavis
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Bellwied
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Betancourt
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Betts
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Bhasin
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Bhati
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Bichsel
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Bielcik
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Bielcikova
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Biritz
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Bland
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Bonner
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Bouchet
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Braidot
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Brandin
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Bridgeman
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Bruna
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Bueltmann
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Bunzarov
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Burton
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Cai
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Caines
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Calderón de la Barca Sánchez
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Catu
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Cebra
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Cendejas
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Cervantes
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Chajecki
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Chaloupka
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Chattopadhyay
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Chen
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Chen
J H
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Chen
J Y
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Cheng
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Cherney
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Chikanian
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Choi
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Christie
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Chung
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Clarke
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Codrington
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Corliss
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Cramer
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Crawford
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Das
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Dash
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Davila Leyva
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De Silva
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Debbe
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Dedovich
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Derevschikov
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Derradi de Souza
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Didenko
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Djawotho
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Dogra
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Dong
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Drachenberg
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Draper
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Dunlop
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Dutta Mazumdar
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Efimov
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Elhalhuli
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Engelage
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Estienne
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Eun
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Evdokimov
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Fatemi
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Fedorisin
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Fersch
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Garcia-Solis
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Geurts
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Gordon
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Grosnick
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Guertin
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Gupta
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Haag
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Hamed
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Han
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Harris
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Heinz
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Heppelmann
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Hirsch
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Hoffman
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Hoffmann
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Hofman
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Huang
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Huang
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Humanic
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Huo
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Igo
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Jacobs
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Jacobs
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Jena
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Jin
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Jones
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Jones
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Joseph
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Judd
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Kabana
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Kajimoto
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Kang
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Kapitan
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Kauder
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Keane
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Kechechyan
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Kettler
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Kikola
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Kiryluk
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Kisiel
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Kocoloski
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Koetke
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Konzer
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Koralt
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Koroleva
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Korsch
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Kouchpil
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Kravtsov
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Krueger
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Krus
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Kumar
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Kurnadi
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Lamont
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Landgraf
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Lee
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Lin
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Lindenbaum
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Lisa
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Liu
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Liu
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Ljubicic
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Nandi
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Qiu
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