Measurements of identified particles at intermediate transverse momentum in the STAR experiment from Au+Au collisions at sqrt{s_{NN}}=200 GeV

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dc.creatorSTAR, The
dc.creatorCollaborations, STAR-RICH
dc.date2006-01-31
dc.date.accessioned2026-07-07T06:59:40Z
dc.date.available2026-07-07T06:59:40Z
dc.descriptionData for Au+Au collisions at sqrt{s_{NN}}=200 GeV are analyzed to determine the ratios of identified hadrons ($π$, $K$, $p$, $Λ$) as functions of collision centrality and transverse momentum ($p_T$). We find that ratios of anti-baryon to baryon yields are independent of $p_T$ up to 5 GeV/c, a result inconsistent with results of theoretical pQCD calculations that predict a decrease due to a stronger contribution from valence quark scattering. For both strange and non-strange species, strong baryon enhancements relative to meson yields are observed as a function of collision centrality in the intermediate $p_T$ region, leading to $p/π$ and $Λ$/K ratios greater than unity. The increased $p_T$ range offered by the $Λ$/K$^{0}_{S}$ ratio allows a test of the applicability of various models developed for the intermediate $p_{T}$ region. The physics implications of these measurements are discussed with regard to different theoretical models.
dc.descriptionSubmitted to PRC
dc.identifierhttps://arxiv.org/abs/nucl-ex/0601042
dc.identifierhttp://arxiv.org/abs/nucl-ex/0601042
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/107829
dc.subjectNuclear Experiment
dc.titleMeasurements of identified particles at intermediate transverse momentum in the STAR experiment from Au+Au collisions at sqrt{s_{NN}}=200 GeV
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