Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State
We study the particle production in the early stage of the ultrarelativistic heavy-ion collisions. To this end the Boltzmann kinetic equations for gluons and pions with elastic rescattering are considered together with a simple model for the parton-hadron conversion process (hadronisation). It is sh...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Particles |
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| Online Access: | http://www.mdpi.com/2571-712X/2/1/10 |
| _version_ | 1829117837982040064 |
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| author | Elizaveta Nazarova Łukasz Juchnowski David Blaschke Tobias Fischer |
| author_facet | Elizaveta Nazarova Łukasz Juchnowski David Blaschke Tobias Fischer |
| author_sort | Elizaveta Nazarova |
| collection | DOAJ |
| description | We study the particle production in the early stage of the ultrarelativistic heavy-ion collisions. To this end the Boltzmann kinetic equations for gluons and pions with elastic rescattering are considered together with a simple model for the parton-hadron conversion process (hadronisation). It is shown that the overpopulation of the gluon phase space in the initial state leads to an intermediate stage of Bose enhancement in the low-momentum gluon sector which due to the gluon-pion conversion process is then reflected in the final distribution function of pions. This pattern is very similar to the experimental finding of a low-momentum pion enhancement in the ALICE experiment at the CERN Large Hadron Collider (LHC). Relations to the thermal statistical model of hadron production and the phenomenon of thermal and chemical freeze-out are discussed in this context. |
| first_indexed | 2024-12-13T10:09:34Z |
| format | Article |
| id | doaj.art-8dbeffb70b5047f594df40ef7a8ebc05 |
| institution | Directory Open Access Journal |
| issn | 2571-712X |
| language | English |
| last_indexed | 2024-12-13T10:09:34Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Particles |
| spelling | doaj.art-8dbeffb70b5047f594df40ef7a8ebc052022-12-21T23:51:29ZengMDPI AGParticles2571-712X2019-03-012114014910.3390/particles2010010particles2010010Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial StateElizaveta Nazarova0Łukasz Juchnowski1David Blaschke2Tobias Fischer3Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, RU-119991 Moscow, RussiaInstitute of Theoretical Physics, University of Wrocław, 50-204 Wrocław, PolandInstitute of Theoretical Physics, University of Wrocław, 50-204 Wrocław, PolandInstitute of Theoretical Physics, University of Wrocław, 50-204 Wrocław, PolandWe study the particle production in the early stage of the ultrarelativistic heavy-ion collisions. To this end the Boltzmann kinetic equations for gluons and pions with elastic rescattering are considered together with a simple model for the parton-hadron conversion process (hadronisation). It is shown that the overpopulation of the gluon phase space in the initial state leads to an intermediate stage of Bose enhancement in the low-momentum gluon sector which due to the gluon-pion conversion process is then reflected in the final distribution function of pions. This pattern is very similar to the experimental finding of a low-momentum pion enhancement in the ALICE experiment at the CERN Large Hadron Collider (LHC). Relations to the thermal statistical model of hadron production and the phenomenon of thermal and chemical freeze-out are discussed in this context.http://www.mdpi.com/2571-712X/2/1/10Boltzmann equationgluon saturationpion enhancementALICELHCthermalizationhadronization |
| spellingShingle | Elizaveta Nazarova Łukasz Juchnowski David Blaschke Tobias Fischer Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State Particles Boltzmann equation gluon saturation pion enhancement ALICE LHC thermalization hadronization |
| title | Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State |
| title_full | Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State |
| title_fullStr | Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State |
| title_full_unstemmed | Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State |
| title_short | Low-Momentum Pion Enhancement from Schematic Hadronization of a Gluon-Saturated Initial State |
| title_sort | low momentum pion enhancement from schematic hadronization of a gluon saturated initial state |
| topic | Boltzmann equation gluon saturation pion enhancement ALICE LHC thermalization hadronization |
| url | http://www.mdpi.com/2571-712X/2/1/10 |
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