Experimental equation of state in proton-proton and proton-antiproton collisions and phase transition to quark gluon plasma

Campanini, Renato; Ferri, Gianluca

doi:10.48550/arxiv.1106.2008

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…Experimentally, the formation of a mini QGP in pp/pA collisions is supported by the observation of the ridge effect [15][16][17][18] in pp/pA collisions at the LHC energies and by the steep growth of the midrapidity strange particle production at charged multiplicity dN ch /dη ∼ > 5 [19]. The earlier analysis [20] of p T as a function of multiplicity, employing Van Hove's arguments [21] also supports the onset of QGP regime at such charged multiplicity density. There were suggested alternative nonhydrodynamical explanations of the ridge effect in pp/pA collisions [22][23][24] due to the initial state parton effects.…”

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confidence: 69%

Jet quenching in pp and pA collisions

Захаров¹

2016

AIP Conference Proceedings

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In a suitably chosen back-to-back kinematics, four-jet production in hadronic collisions is known to be dominated by contributions from two independent partonic scattering processes, thus giving experimental access to the structure of generalized two-parton distributions (2GPDs). Here, we show that a combined measurement of the double hard four-jet cross section in proton-proton and proton-nucleus collisions will allow one to disentangle different sources of two-parton correlations in the proton, that cannot be disentangled with 4-jet measurements in proton-proton collisions alone. To this end, we analyze in detail the structure of 2GPDs in the nucleus (A), we calculate in the independent nucleon approximation all contributions to the double hard four-jet cross section in pA, and we determine corrections arising from the nuclear dependence of single parton distribution functions. We then outline an experimental strategy for determining the longitudinal two-parton correlations in the proton.

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confidence: 69%

Jet quenching in pp and pA collisions

Захаров¹

2016

AIP Conference Proceedings

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“…for beginning of the regime with formation of the hot QCD matter in pp collisions found in [25] from variation of the average transverse hadron momentum p T with dN ch /dη, and than a more conservative value dN ch /dη ∼ 9 obtained in [26]. The onset of the regime with QGP formation at dN ch /dη ∼ > 5 − 10 is also supported by the observation of a steep growth of the strange particle production in pp collisions in the range dN ch /dη ∼ 2 − 8 [27].…”

Section: Introductionmentioning

confidence: 98%

Jet quenching from heavy to light ion collisions

Zakharov

2021

Preprint

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We perform an analysis of jet quenching in heavy and light ion collisions for scenarios without and with quark-gluon plasma formation in pp collisions. We find that the results for these scenarios are very similar, and both of them are in reasonable agreement with data for heavy ion collisions. However, their results become differ significantly for light nuclei. Using the parameters fitted to heavy ion data on the nuclear modification factor RAA, we make predictions for 0.2 and 7 TeV O+O collisions that can be verified by future experiments at RHIC and the LHC.

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“…The idea that the QGP may be produced in pp collisions has attracted much attention in recent years (see, for instance, [2][3][4][5][6][7]). It is mostly due to observation of the ridge effect in high multiplicity pp events at √ s = 7 TeV by the CMS collaboration [8], which may be caused by the transverse flow of the produced mini-QGP fireball.…”

Section: Introductionmentioning

confidence: 99%

Flavor dependence of jet quenching in pp collisions and its effect on R AA for heavy mesons

Захаров

2016

Jetp Lett.

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We study the flavor dependence of the medium modification factor Rpp for pp collisions for scenario with formation of a small-size quark-gluon plasma (QGP) for RHIC ( √ s = 0.2 TeV) and LHC ( √ s = 2.76 TeV) energies. We find that at pT ∼ 10 GeV the pion spectrum is suppressed by ∼ 20 − 30 (25 − 35)% for RHIC (LHC), for D (B) mesons the suppression effect is smaller by a factor of ∼ 0.7 − 0.8 (0.5). The flavor hierarchy R π pp < R D pp < R B pp is held at pT ∼ < 20 GeV for RHIC and at pT ∼ < 70 GeV for LHC. This gives a sizeable reduction of the heavy-to-light ratios of the nuclear modification factors RAA as compared to that in the standard scenario without the QGP production in pp collisions.

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Experimental equation of state in proton-proton and proton-antiproton collisions and phase transition to quark gluon plasma

Cited by 3 publications

References 32 publications

Jet quenching in pp and pA collisions

Jet quenching in pp and pA collisions

Jet quenching from heavy to light ion collisions

Flavor dependence of jet quenching in pp collisions and its effect on R AA for heavy mesons

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