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Extracting Kinetic Freeze-Out Properties in High-Energy Collisions Using a Multisource Thermal Model.

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Title: Extracting Kinetic Freeze-Out Properties in High-Energy Collisions Using a Multisource Thermal Model.
Authors: Chen, Jia-Yu1 (AUTHOR), Duan, Mai-Ying1 (AUTHOR), Liu, Fu-Hu1 (AUTHOR), Olimov, Khusniddin K.2,3 (AUTHOR)
Source: Advances in High Energy Physics. 3/25/2024, Vol. 2024, p1-14. 14p.
Subjects: Einstein, Albert, 1879-1955, Partons, Monte Carlo method, Flow velocity, Center of mass, Hadrons, Pions
Abstract: We study the transverse momentum ( p T ) spectra of neutral pions and identified charged hadrons produced in proton–proton (pp), deuteron–gold (d–Au), and gold–gold (Au–Au) collisions at the center of mass energy s NN = 200 GeV. The study is made in the framework of a multisource thermal model used in the partonic level. It is assumed that the contribution to the p T -value of any hadron comes from two or three partons with an isotropic distribution of the azimuthal angle. The contribution of each parton to the p T -value of a given hadron is assumed to obey any one of the standard (Maxwell-Boltzmann, Fermi-Dirac, and Bose-Einstein) distributions with the kinetic freeze-out temperature and average transverse flow velocity. The p T spectra of the final-state hadrons can be fitted by the superposition of two or three components. The results obtained from our Monte Carlo method are used to fit the experimental results of the PHENIX and STAR Collaborations. The results of the present work serve as a suitable reference baseline for other experiments and simulation studies. [ABSTRACT FROM AUTHOR]
Copyright of Advances in High Energy Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: We study the transverse momentum ( p T ) spectra of neutral pions and identified charged hadrons produced in proton–proton (pp), deuteron–gold (d–Au), and gold–gold (Au–Au) collisions at the center of mass energy s NN = 200 GeV. The study is made in the framework of a multisource thermal model used in the partonic level. It is assumed that the contribution to the p T -value of any hadron comes from two or three partons with an isotropic distribution of the azimuthal angle. The contribution of each parton to the p T -value of a given hadron is assumed to obey any one of the standard (Maxwell-Boltzmann, Fermi-Dirac, and Bose-Einstein) distributions with the kinetic freeze-out temperature and average transverse flow velocity. The p T spectra of the final-state hadrons can be fitted by the superposition of two or three components. The results obtained from our Monte Carlo method are used to fit the experimental results of the PHENIX and STAR Collaborations. The results of the present work serve as a suitable reference baseline for other experiments and simulation studies. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Advances in High Energy Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1155/2024/9938669
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        Text: English
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      – SubjectFull: Flow velocity
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      – SubjectFull: Center of mass
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              Text: 3/25/2024
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