Kinetic freeze-out spectra of identified particles produced in p–Pb collisions at 
                                $$\sqrt {s_{NN} }$$


                                    


s

N
N





 = 5.02 TeV

Bashir, Inam-ul; Uddin, Saeed

doi:10.1134/s1063776117030013

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…The heavier the particle is, the larger the effective temperature is. This result validates [38][39][40][41]. This dependence becomes more pronounced for the hefty particles such as 3 He.…”

Section: Producedsupporting

confidence: 84%

Systematic analysis of the pp collisions at LHC energies with Tsallis function

Badshah

Waqas

Khubrani

et al. 2023

EPL

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This work focuses on the study of identified (π±, k±, p, and p̅), strange hadrons (k_s^0, Λ, Λ ̅,〖 Ξ〗^+ 〖,Ξ〗^-), recorded by CMS, and light nuclei and their anti-nuclei (d, d̅, t, t̅, (_ ^3)He and (_ ^3)(He) ̅ ), recorded by ALICE, at √s= 0.9 TeV, 2.76 TeV, 7 TeV and 13 TeV in pp collision at mid rapidities. The pT distributions of these particles are analyzed using the Tsallis model, which fits the experimental data very well. Several important parameters for studying the characteristics of the medium produced during such collisions are extracted. The effective temperature (T) increases monotonically with increasing particle mass and also with increasing collision energy. The non-extensivity parameter (q) decreases with the mass of the particle. For heavier particles, greater T and smaller q mean that they decouple early from the system and attain equilibrium quickly compared to lighter ones. Furthermore, with an increase in collision energy, the multiplicity parameter N0 increases.

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“…The heavier the particle is, the larger the effective temperature is. This result validates [38][39][40][41]. This dependence becomes more pronounced for the hefty particles such as 3 He.…”

Section: Producedsupporting

confidence: 84%

Systematic analysis of the pp collisions at LHC energies with Tsallis function

Badshah

Waqas

Khubrani

et al. 2023

EPL

View full text Add to dashboard Cite

show abstract

“…In the analyzed particles, Ξ or Ξ+ and Ω + Ω or Ω+ or Ω are the heaviest particles and they freezeout earlier than the rest of others. π + is the lightest particle and it freezeout after Ξ or Ξ+ , Ω + Ω or Ω+ or Ω, K + , K 0 S and Λ. p is heavier than π, K + and K 0 S but it freezeout after K + and K 0 S (same result of larger T 0 for K + and K 0 S than p can be found in [48], although the main idea is different from our present work). Eventually, the freezeout of p occurs at the same time with π.…”

Section: Resultssupporting

confidence: 62%

An evidence of triple kinetic freezeout scenario observed in all centrality intervals in Cu–Cu, Au–Au and Pb–Pb collisions at high energies

Ajaz

Peng

Liu

2021

J. Phys. G: Nucl. Part. Phys.

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Transverse momentum spectra of π +, K +, p, K S 0 , Λ, Ξ or Ξ ̄ + and Ω or Ω ̄ + or Ω + Ω ̄ in copper–copper (Cu–Cu), gold–gold (Au–Au) and lead–lead (Pb–Pb) collisions at 200 GeV, 62.4 GeV and 2.76 TeV respectively, are analyzed in different centrality bins by the blast wave model with Tsallis statistics. The model results are approximately in agreement with the experimental data measured by BRAHMS, STAR and ALICE Collaborations in special transverse momentum ranges. Kinetic freeze out temperature, transverse flow velocity and kinetic freezeout volume are extracted from the transverse momentum spectra of the particles. It is observed that Ξ ̄ + and Ω or Ω ̄ + or Ω + Ω ̄ have larger kinetic freezeout temperature followed by K +, K S 0 and Λ than π + and p due to smaller reaction cross-sections of multi-strange and strange particles than non-strange particles. The present work reveals the scenario of triple kinetic freezeout in collisions at BRAHMS, STAR and ALICE Collaborations, however the transverse flow velocity and kinetic freezeout volume are mass dependent and they decrease with the increasing rest mass of the particle. In addition, the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume are decreasing from central to peripheral collisions while the parameter q increase from central to peripheral collisions, indicating the approach of quick equilibrium in the central collisions. Besides, the kinetic freezeout temperature and kinetic freezeout volume are observed to be larger in larger collision system which shows its dependence on the size of the interacting system, while transverse flow velocity increase with increasing energy.

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“…In the analysed particles, Ξ or Ξ+ and Ω + Ω or Ω+ or Ω are the heaviest particles and they freezeout earlier than the rest of others. π + is the lightest particle and it freezeout after Ξ or Ξ+ , Ω + Ω or Ω+ or Ω, K + , K 0 S and Λ. p is heavier than π, K + and K 0 S but it freezeout after K + and K 0 S (same result of larger T 0 for K + and K 0 S than p can be found in [49], although the main idea is different from our present work). Eventually, the freezeout of p occurs at the same time with π.…”

Section: Resultssupporting

confidence: 62%

An evidence of triple kinetic freezeout scenario observed in all centrality intervals in Cu-Cu, Au-Au and Pb-Pb collisions at high energies

Waqas,

Peng,

Liu

2021

Preprint

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Transverse momentum spectra of π + , K + , p, K 0 s , Λ, Ξ or Ξ+ and Ω or Ω+ or Ω + Ω in Copper-Copper (Cu-Cu), Gold-Gold (Au-Au) and Lead-Lead (Pb-Pb) collisions at 200 GeV, 62.4 GeV and 2.76 TeV respectively, are analyzed in different centrality bins by the blast wave model with Tsallis statistics. The model results are approximately in agreement with the experimental data measured by BRAHMS, STAR and ALICE Collaborations in special transverse momentum ranges. Kinetic freeze out temperature, transverse flow velocity and kinetic freezeout volume are extracted from the transverse momentum spectra of the particles. It is observed that Ξ+ and Ω or Ω+ or Ω + Ω have larger kinetic freezeout temperature followed by K + , K 0 s and Λ than π + and p due to smaller reaction cross-sections of multi-strange and strange particles than non-strange particles. The present work reveals the scenario of triple kinetic freezeout in collisions at BRAHMS, STAR and ALICE Collaborations, however the transverse flow velocity and kinetic freezeout volume are mass dependent and they decrease with the increasing rest mass of the particle. In addition, the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume are decreasing from central to peripheral collisions while the parameter q increase from central to peripheral collisions, indicating the approach of quick equilibrium in the central collisions. Besides, the kinetic freezeout temperature and kinetic freezeout volume are observed to be larger in larger collision system which shows its dependence on the size of the interacting system, while transverse flow velocity increase with increasing energy.

show abstract

Kinetic freeze-out spectra of identified particles produced in p–Pb collisions at $$\sqrt {s_{NN} }$$ s N N = 5.02 TeV

Cited by 6 publications

References 13 publications

Systematic analysis of the pp collisions at LHC energies with Tsallis function

Systematic analysis of the pp collisions at LHC energies with Tsallis function

An evidence of triple kinetic freezeout scenario observed in all centrality intervals in Cu–Cu, Au–Au and Pb–Pb collisions at high energies

An evidence of triple kinetic freezeout scenario observed in all centrality intervals in Cu-Cu, Au-Au and Pb-Pb collisions at high energies

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