Radial flow in non-extensive thermodynamics and study of particle spectra at LHC in the limit of small (q - 1)

Bhattacharyya, Trambak; Cleymans, J.; Khuntia, A.; Pareek, P.; Sahoo, R.

doi:10.1140/epja/i2016-16030-5

Cited by 83 publications

(82 citation statements)

References 50 publications

(66 reference statements)

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“…Further, it has been observed that the transverse momentum spectra of the secondaries created in high energy p + p(p) [9,13,14,15,16,17,18,19], e + + e − collisions [20,21] are better described by the non-extensive Tsallis statistics [22]. In addition, non-extensive statistics with radial flow successfully describes the spectra at intermediate p T in heavy-ion collisions [23,24,25,26,27]. Tsallis non-extensive statistics in Boltzmann Transport Equation with relaxation time approximation successfully describes the nuclear modification factor of heavy flavors in heavy-ion collisions at RHIC and LHC energies [28].…”

Section: Introductionmentioning

confidence: 99%

Speed of sound in hadronic matter using non-extensive Tsallis statistics

Khuntia¹,

Sahoo²,

Garg³

et al. 2016

Eur. Phys. J. A

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Abstract. The speed of sound (cs) is studied to understand the hydrodynamical evolution of the matter created in heavy-ion collisions. The quark-gluon plasma (QGP) formed in heavy-ion collisions evolves from an initial QGP to the hadronic phase via a possible mixed phase. Due to the system expansion in a first order phase transition scenario, the speed of sound reduces to zero as the specific heat diverges. We study the speed of sound for systems, which deviate from a thermalized Boltzmann distribution using non-extensive Tsallis statistics. In the present work, we calculate the speed of sound as a function of temperature for different q-values for a hadron resonance gas. We observe a similar mass cut-off behaviour in the nonextensive case for c 2 s by including heavier particles, as is observed in the case of a hadron resonance gas following equilibrium statistics. Also, we explicitly show that the temperature where the mass cut-off starts varies with the q-parameter which hints at a relation between the degree of non-equilibrium and the limiting temperature of the system. It is shown that for values of q above approximately 1.13 all criticality disappears in the speed of sound, i.e. the decrease in the value of the speed of sound, observed at lower values of q, disappears completely.

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Section: Introductionmentioning

confidence: 99%

Speed of sound in hadronic matter using non-extensive Tsallis statistics

Khuntia¹,

Sahoo²,

Garg³

et al. 2016

Eur. Phys. J. A

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“…Both initial and final state temperatures are expected to obtain from particle spectra measured in experiments. In particular, the final state temperature is in fact the kinetic freeze-out temperature (T 0 ) which is writhen to transverse flow velocity (β T ) [2][3][4]. Both T 0 and β T can be extracted from transverse momentum (p T ) spectra of particles.…”

Section: Introductionmentioning

confidence: 99%

Initial and Final State Temperatures of Antiproton Emission Sources in High Energy Collisions

Wang

Liu

2019

Int J Theor Phys

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The momentum or transverse momentum spectra of antiprotons produced at mid-rapidity in protonhelium (p+He), gold-gold (Au+Au), deuton-gold (d+Au), and lead-lead (Pb+Pb) collisions over an energy range from a few GeV to a few TeV are analyzed by the Erlang distribution, the inverse power-law (the Hagedorn function), and the blast-wave fit, or the superposition of two-component step function. The excitation functions of parameters such as the mean transverse momentum, initial state temperature, kinetic freeze-out temperature, and transverse flow velocity increase (slightly) from a few GeV to a few TeV and from peripheral to central collisions. At high energy and in central collisions, large collision energy is deposited in the system, which results in high degrees of excitation and expansion.

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“…Refs. [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] and references therein, with a particular focus on the study of imprints of the superstatistics on the particle production, using a particular version, the so-called Tsallis statistics [42]. Its use in the context of the computation of the rapidity distribution profile for the stopping in heavy ion collisions has been recently questioned in Ref.…”

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confidence: 99%

Effects of Superstatistics on the Location of the Effective QCD Critical End Point

et al. 2019

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Effects of the partial thermalization during the chiral symmetry restoration at the finite temperature and quark chemical potential are considered for the position of the critical end point in an effective description of the QCD phase diagram. We find that these effects cause the critical end point to be displaced toward larger values of the temperature and lower values of the quark chemical potential, as compared to the case where the system can be regarded as completely thermalized. These effects may be important for relativistic heavy ion collisions, where the number of subsystems making up the whole interaction volume can be linked to the finite number of participants in the reaction.

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Radial flow in non-extensive thermodynamics and study of particle spectra at LHC in the limit of small (q - 1)

Cited by 83 publications

References 50 publications

Speed of sound in hadronic matter using non-extensive Tsallis statistics

Speed of sound in hadronic matter using non-extensive Tsallis statistics

Initial and Final State Temperatures of Antiproton Emission Sources in High Energy Collisions

Effects of Superstatistics on the Location of the Effective QCD Critical End Point

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