NA57 Collaboration

Bacon, P A; Badalà, Antonio; Barbera, R.; Belogianni, A.; Bloodworth, I. J.; Bombara, M.; Brunò, Giuseppe; Bull, Stephen; Caliandro, Rocco; Campbell, M.; Carena, W.; Carrer, N.; Clarke, R. F.; Dainese, A.; Bari, D. Di; Liberto, S. Di; Divià, R.; Elia, D.; Evans, D.; Феофилов, Г.; Fini, R. A.; Ganoti, P.; Ghidini, B.; Grella, G.; Helstrup, H.; Hetland, K.F.; Holme, A.K.; Jacholkowski, A.; Jones, G.T.; Jovanović, P.; Jusko, A.; Kamermans, R.; Kinson, J.B.; Knudson, K.; Kondratiev, V.; Králik, I.; Kravčáková, A.; Kuijer, P. G.; Lenti, V.; Lietava, R.; Løvhøiden, G.; Manzari, V.; Mazzoni, M.A.; Meddi, F.; Michalon, A.; Morando, M.; Norman, P.I.; Palmeri, A.; Pappalardo, G.S.; Pastirčák, B.; Platt, R.J.; Quercigh, E.; Riggi, F.; Röhrich, D.; Šafařík, K.; Šándor, L.; Schillings, E.; Segato, G.; Sené, M.; Sené, R.; Snoeys, W.; Soramel, F.; Spyropoulou‐Stassinaki, M.; Staroba, P.; Turrisi, R.; Tveter, T.S.; Urbán, J.; Ven, P. van de; Vyvre, P. Vande; Vascotto, A.; Vik, T.; Baillie, O. Villalobos; Vinogradov, L.; Virgili, T.; Votruba, M.F.; Vrláková, J.; Závada, P.

doi:10.1016/j.nuclphysa.2006.07.012

Cited by 20 publications

(46 citation statements)

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“…Rafelski and Müller's expectation, first proposed in 1982 [8], is that QGP formation should lead to a higher abundance of strangeness per participating nucleon than in pp interactions. This phenomenon has been actually observed at SPS [9], RHIC [10] and the LHC [2], and has been found to increase with centrality and with the strangeness content of the particle, and decrease as the centre-of-mass energy increases. Statistical hadronization models based on a grand-canonical approach have been demonstrated to be able to predict particle yield ratios in heavy-ion collisions over a large energy scale [11].…”

Section: Resultssupporting

confidence: 62%

Strangeness production in p–Pb and Pb–Pb collisions with ALICE at LHC

Colella

2017

J. Phys.: Conf. Ser.

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The main goal of the ALICE experiment is to study the properties of the hot and dense medium created in ultra-relativistic heavy-ion collisions. The measurement of the (multi-)strange particles is an important tool to understand particle production mechanisms and the dynamics of the quark-gluon plasma (QGP). We report on the production of K 0 S , Λ(Λ), Ξ − (Ξ + ) and Ω − (Ω + ) in proton-lead (p-Pb) collisions at √ sNN = 5.02 TeV and lead-lead (Pb-Pb) collisions at √ sNN = 2.76 TeV measured by ALICE at the LHC. The comparison of the hyperon-to-pion ratios in the two colliding systems may provide insight into strangeness production mechanisms, while the comparison of the nuclear modification factors helps to determine the contribution of initial state effects and the suppression from strange quark energy loss in nuclear matter.

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Section: Resultssupporting

confidence: 62%

Strangeness production in p–Pb and Pb–Pb collisions with ALICE at LHC

Colella

2017

J. Phys.: Conf. Ser.

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“…To study nuclear medium effect in Au+Au collisions, it is convenient to introduce a ratio R cp of the particle yield in central collisions to that in peripheral collisions [16,40]. Both yields are normalized by corresponding nucleon-nucleon binary collision numbers N coll (binary scaling),…”

Section: Nuclear Modification Factor Rcp Of Protons and Pionsmentioning

confidence: 99%

Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions

Chen

et al. 2017

Phys. Rev. C

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Nuclear modification factor (Rcp) of protons and pions are investigated by simulating Au + Au collisions from 0.8 to 1.8A GeV in a framework of an isospin-dependent quantum molecular dynamics (IQMD) model. Rcp of protons rises with the increase of pT at different beam energies owing to radial flow and Cronin effect. The rate of increase of Rcp is suppressed at higher beam energies. The significant difference of Rcp between protons and pions indicates different medium effects between protons and pions. By changing the in-medium nucleon-nucleon cross section, the Rcp of protons changes a lot, while the Rcp of pions does not. Taking the pion absorption into account, the Rcp of pions becomes close to unity without pT dependence after deactivating the reaction πN → ∆, while there is nearly no change on proton. This suggests that the pion absorption plays a dominant role on pion dynamics and have slight effect for proton dynamics.

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“…In Fig. 9 and Table 3 we compare the results of the QGSM calculations for the A-dependences of p, p, and Λ, Λ, Ξ − , Ξ + , Ω − , and Ω + hyperons produced on different nucleus targets with the corresponding experimental data [71,72,73,74,75]. The GeV/c [71,73,74,75], with the results of corresponding QGSM calculations (see the main text por the description of the different curves).…”

Section: The Pa Collisionsmentioning

confidence: 99%

“…The experimental data on the rapidity density dn/dy(| y |≤ 0.5) for Λ, Λ, Ξ − , Ξ + , Ω − , and Ω + hyperons productions at 158 GeV/c and for p and p production at √ s=5.02 TeV [70] in pP b collisions [71,73,74,75] are presented in Fig. 10, together with the corresponding QGSM predictions from fixed targets up to LHC energies.…”

Section: The Pa Collisionsmentioning

confidence: 99%

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Midrapidity hyperon production in pp and pA collisions from low to LHC energies

Arakelyan¹,

Merino²,

Shabelski³

2016

Eur. Phys. J. A

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The experimental data on p, Λ, Ξ − , Ω − -baryons and the corresponding antibaryons spectra obtained by different collaborations are compared with the results of the calculations performed into the frame of the Quark-Gluon String Model. The contribution of String Junction diffusion and the inelastic screening corrections are accounted for in the theoretical calculations. The predictions of the Quark-Gluon String Model both for pp and pA collisions are extended up to the LHC energies.PACS. 25.75.Dw Particle and resonance production 1 arXiv:1509.05218v1 [hep-ph]

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NA57 Collaboration

Cited by 20 publications

References 0 publications

Strangeness production in p–Pb and Pb–Pb collisions with ALICE at LHC

Strangeness production in p–Pb and Pb–Pb collisions with ALICE at LHC

Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions

Midrapidity hyperon production in pp and pA collisions from low to LHC energies

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