Signature of QCD critical point: Anomalous transverse velocity dependence of antiproton-proton ratio

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dc.creatorLuo, Xiaofeng
dc.creatorShao, Ming
dc.creatorLi, Cheng
dc.creatorChen, Hongfang
dc.date2009-02-27
dc.date.accessioned2026-07-07T13:04:54Z
dc.date.available2026-07-07T13:04:54Z
dc.descriptionWe formulate the QCD critical point focusing effect on transverse velocity ($β_{t}$) dependence of antiproton to proton ($\bar{p}/p$) ratio, which was recently proposed by Asakawa {\it et al.} as an experimental signature of QCD critical point in high energy heavy ion collisions (HICs). For quantitative analysis, Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport model and THERMal heavy-IoN generATOR (THERMINATOR) are applied to calculate the corresponding $β_{t}$ dependence of $\bar{p}/p$ ratio for three gedanken focused isentropic trajectories with different focusing degree on QCD phase diagram. Finally, we obtained an observable anomaly in $β_{t}$ dependence of $\bar{p}/p$ ratio, which can be employed as a signature of QCD critical point.
dc.description5 pages, 6 figures; To be published on Physics Letters B
dc.identifierhttps://arxiv.org/abs/0903.0024
dc.identifierhttp://arxiv.org/abs/0903.0024
dc.identifierPhys.Lett.B673:268-271,2009
dc.identifierdoi:10.1016/j.physletb.2009.02.044
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/227333
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Experiment
dc.titleSignature of QCD critical point: Anomalous transverse velocity dependence of antiproton-proton ratio
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