A unified approach towards describing rapidity and transverse momentum distributions in a thermal freeze-out model

Uddin, Saeed; Ahmad, Jan Shabir; Bashir, Waseem; Bhat, Riyaz Ahmad

doi:10.1088/0954-3899/39/1/015012

Cited by 28 publications

(37 citation statements)

References 29 publications

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“…In our model [1,7], it is assumed that the rapidity axis is populated with hot hadronic regions moving along the beam axis with monotonically increasing rapidity y 0 . This essentially emerges from the situation where the colliding nuclei exhibit transparency effects.…”

Section: Resultsmentioning

confidence: 99%

“…We have also employed the strangeness conservation criteria in a way such that the total strangeness in the fireball is zero. We have tabulated below the different values of chemical potentials obtained in our previous papers [1,7] for different centre of mass energies, as shown in table 1, by using our Unified Statistical Thermal freeze-out Model. For the sake of comparison, we have also mentioned the values of μ .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Energy Dependence of Particle Ratios in High Energy Nucleus-Nucleus Collisions: A USTFM Approach

Bashir

Parra

Nanda

et al. 2018

Advances in High Energy Physics

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We study the identified particle ratios produced at mid-rapidity in heavy ion collisions, along with their correlations with the collision energy. We employ our earlier proposed Unified Statistical Thermal Freeze-out Model (USTFM), which incorporates the effects of both longitudinal as well as transverse hydrodynamic flow in the hot hadronic system. A fair agreement seen between the experimental data and our model results confirms that the particle production in these collisions is of statistical nature. The variation of the chemical freeze-out temperature and the baryon chemical potential with respect to collision energies is studied. The chemical freeze-out temperature is found to be almost constant beyond the RHIC energy and is found to be close to the QCD predicted phase transition temperature suggesting that the chemical freeze-out occurs soon after the hadronization takes place. The vanishing value of chemical potential at LHC indicates very high degree of nuclear transparency in the collision.*saeed_jmi@yahoo.co.in ==================================================================================

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Energy Dependence of Particle Ratios in High Energy Nucleus-Nucleus Collisions: A USTFM Approach

Bashir

Parra

Nanda

et al. 2018

Advances in High Energy Physics

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“…A common radial flow velocity for meson and anti-baryon found from the analysis of the transverse momentum data of the Tevatron [13] had been attributed to as an evidence for collectivity due to the formation of QGP. [18] Keeping in view the above facts, we in our present analysis will address the collective detailed description of our model is available in the references [5,[19][20][21][22][23][24]. We have employed the strangeness conservation criteria such that the net strangeness in the system is zero.…”

Section: /11mentioning

confidence: 99%

Particle Transverse Momentum Distributions in p-p Collisions at √sNN=0.9 TeV

Bashir

Parra

Bhat

et al. 2019

Advances in High Energy Physics

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The mid-rapidity transverse momentum spectra of hadrons (p, p , K + , K -, , φ, Λ, Λ , Ξ , Ξ , (Ξ + Ξ ), Ω, and Ω ) and the available rapidity distributions of the strange hadrons ( , (Λ + Λ ), (Ξ + Ξ ) produced in p-p collisions at LHC energy √s NN = 0.9 TeV have been studied using a Unified Statistical Thermal Freeze-out Model (USTFM). The calculated results are found to be in good agreement with the experimental data. The theoretical fits of the transverse momentum spectra using the model calculations provide the thermal freeze-out conditions in terms of the temperature and collective flow parameters for different hadronic species. The study reveal the presence of significant collective flow and a well defined temperature in the system thus indicating the formation of a thermally equilibrated hydrodynamic system in p-p collisions at LHC. Moreover, the fits to the available experimental rapidity distributions data of strange hadrons show the effect of almost complete transparency in p-p collisions at LHC. The model incorporates longitudinal as well as a transverse hydrodynamic flow. The contributions from heavier decayresonances have also been taken into account. We have also imposed the criteria of exact strangeness conservation in the system. *inamhep@gmail.com

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“…Though the details of the model used here can be found elsewhere [5][6][7][8][9][10][11] however for the sake of convenience we will briefly describe our model here. In a statistical hydrodynamic description taking into account the flow in the transverse and longitudinal directions, the final state particles will leave the hadronic resonance gas (HRG) at the time of freeze-out.…”

Section: Modelmentioning

confidence: 99%

“…the zcoordinate [5]. The contributions of various heavier hadronic resonances [27,31] which decay after the freeze-out has occurred, are also taken into account in our analysis.…”

Section: Modelmentioning

confidence: 99%

Indication of Collective flow and Transparency in p-p Collisions at LHC.

Bashir¹,

Uddin²

2017

Proceedings of 7th International Conference on Physics and Astrophysics of Quark Gluon Plasma — PoS(ICPAQGP2015)

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. The mid-rapidity transverse momentum spectra of various hadrons and the available rapidity distributions of some strange hadrons produced in p-p collisions at LHC energy √s NN = 7.0 TeV have been studied using a Unified Statistical Thermal Freeze-out Model (USTFM). The calculated results are found to be in good agreement with the experimental data. The theoretical fits of the transverse momentum spectra using the model calculations provide the thermal freeze-out conditions in terms of the temperature and collective flow parameters for different hadronic species. The study reveal the presence of significant collective flow and a well defined temperature in the system thus indicating the formation of a thermally equilibrated hydrodynamic system in p-p collisions at LHC. Moreover, the fits to the available experimental rapidity distributions data of strange hadrons show the effect of almost complete transparency in p-p collisions at LHC. The transverse momentum distributions of protons and kaons produced in p-p collisions at √s NN = 200 GeV and √s NN = 2.76 TeV have also been reproduced successfully. The model incorporates longitudinal as well as a transverse hydrodynamic flow. The contributions from heavier decay resonances have also been taken into account. We have also imposed the criteria of exact strangeness conservation in the system.

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A unified approach towards describing rapidity and transverse momentum distributions in a thermal freeze-out model

Cited by 28 publications

References 29 publications

Energy Dependence of Particle Ratios in High Energy Nucleus-Nucleus Collisions: A USTFM Approach

Energy Dependence of Particle Ratios in High Energy Nucleus-Nucleus Collisions: A USTFM Approach

Particle Transverse Momentum Distributions in p-p Collisions at √sNN=0.9 TeV

Indication of Collective flow and Transparency in p-p Collisions at LHC.

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