2011
DOI: 10.1103/physrevc.83.064905
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Pion femtoscopy inp+pcollisions at<

Abstract: The STAR Collaboration at the BNL Relativistic Heavy Ion Collider has measured two-pion correlation functions from p + p collisions at √ s = 200 GeV. Spatial scales are extracted via a femtoscopic analysis of the correlations, though this analysis is complicated by the presence of strong nonfemtoscopic effects. Our results are put into the context of the world data set of femtoscopy in hadron-hadron collisions. We present the first direct comparison of femtoscopy in p + p and heavy ion collisions, under identi… Show more

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Cited by 55 publications
(48 citation statements)
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“…Each point corresponds to a fit of hadron yields in central Au-Au or Pb-Pb collisions at a given collision energy. The agreement between the results from several independent analyses [29,32,33,34] is very good. Note that in some cases [32,33,34] an additional fit parameter, the strangeness suppression factor γ s , is used to test possible departure from equilibrium of hadrons containing strange quark(s).…”
Section: Chemical Freeze-out Of Light-quark Hadronssupporting
confidence: 52%
See 1 more Smart Citation
“…Each point corresponds to a fit of hadron yields in central Au-Au or Pb-Pb collisions at a given collision energy. The agreement between the results from several independent analyses [29,32,33,34] is very good. Note that in some cases [32,33,34] an additional fit parameter, the strangeness suppression factor γ s , is used to test possible departure from equilibrium of hadrons containing strange quark(s).…”
Section: Chemical Freeze-out Of Light-quark Hadronssupporting
confidence: 52%
“…Figure 4. The phase diagram of strongly interacting matter with the points representing the thermal fits of hadron yields at various collision energies [14,29,32,33,34]. The crossover T values from lattice QCD [35,36] are shown as bands at small µ B values.…”
Section: Chemical Freeze-out Of Light-quark Hadronsmentioning
confidence: 99%
“…The models based on the CGC formalism suggest sizes similar to those obtained in pp data. The observed differences of about 10%-20% for high-multiplicity p-Pb , as a function of the measured charged-particle multiplicity density, measured for various collision systems and energies by CERES [42], STAR [45,46,53], PHENIX [54], and ALICE [16].…”
Section: Discussionmentioning
confidence: 88%
“…But overviews [3,4,9] of femtoscopic measurements in hadron-and lepton-induced collisions reveal systematics surprisingly similar to those mentioned above for heavyion collisions. Moreover, in the first direct comparison of femtoscopy in heavy-ion collisions at Relativistic HeavyIon Collider (RHIC) and proton collisions in the same apparatus an essentially identical multiplicity-and momentum dependence was reported in the two systems [10]. However, the multiplicities at which the femtoscopic measurement in pp collisions at RHIC was made were still significantly smaller than those in even the most peripheral heavy-ion collisions.…”
Section: Proton-proton Collisions Atmentioning
confidence: 99%
“…All points at given k T bin should be at the same value of k T , but we shifted them to improve visibility. Open black squares show values for pp collisions at ffiffi ffi s p ¼ 200 GeV from STAR [10]. Lines connecting the points for lowest and highest multiplicity range were added to highlight the trends.…”
Section: Fig 11 (Color Online) Parameters Of the Three-dimensionalmentioning
confidence: 99%