Low-m⊥ π+-π- asymmetry enhancement from hadronization of QGP

Jean Letessier; Ahmed Tounsi; Johann Rafelski

doi:10.1016/S0370-2693(00)00088-5

Low-m⊥ π⁺-π^- asymmetry enhancement from hadronization of QGP

Jean Letessier
, Ahmed Tounsi
, Johann Rafelski

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We show that in sudden hadronization of QGP a non-equilibrium value of the pion phase space occupancy parameter γ_q> 1 is expected in order to accommodate the entropy excess in QGP and the process of gluon fragmentation. When γ_q is near to its maximum allowed value, pion overabundance is shown to arise at low m⊥, where the charged pion asymmetry is also amplified. These effects are considered and we show that their magnitude suffices to explain pertinent experimental data obtained in 160-200 A GeV Pb- and S- induced reactions.

Original language	English (US)
Pages (from-to)	213-219
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	475
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(00)00088-5
State	Published - Mar 2 2000
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(00)00088-5

Cite this

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title = "Low-m⊥ π+-π- asymmetry enhancement from hadronization of QGP",

abstract = "We show that in sudden hadronization of QGP a non-equilibrium value of the pion phase space occupancy parameter γq> 1 is expected in order to accommodate the entropy excess in QGP and the process of gluon fragmentation. When γq is near to its maximum allowed value, pion overabundance is shown to arise at low m⊥, where the charged pion asymmetry is also amplified. These effects are considered and we show that their magnitude suffices to explain pertinent experimental data obtained in 160-200 A GeV Pb- and S- induced reactions.",

author = "Jean Letessier and Ahmed Tounsi and Johann Rafelski",

note = "Funding Information: Supported in part by a grant from the US Department of Energy, DE-FG03-95ER40937 . LPTHE, Univ. Paris 6 et 7 is: Unit{\'e} mixte de Recherche du CNRS, UMR7589.",

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doi = "10.1016/S0370-2693(00)00088-5",

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T1 - Low-m⊥ π+-π- asymmetry enhancement from hadronization of QGP

AU - Letessier, Jean

AU - Tounsi, Ahmed

AU - Rafelski, Johann

N1 - Funding Information: Supported in part by a grant from the US Department of Energy, DE-FG03-95ER40937 . LPTHE, Univ. Paris 6 et 7 is: Unité mixte de Recherche du CNRS, UMR7589.

PY - 2000/3/2

Y1 - 2000/3/2

N2 - We show that in sudden hadronization of QGP a non-equilibrium value of the pion phase space occupancy parameter γq> 1 is expected in order to accommodate the entropy excess in QGP and the process of gluon fragmentation. When γq is near to its maximum allowed value, pion overabundance is shown to arise at low m⊥, where the charged pion asymmetry is also amplified. These effects are considered and we show that their magnitude suffices to explain pertinent experimental data obtained in 160-200 A GeV Pb- and S- induced reactions.

AB - We show that in sudden hadronization of QGP a non-equilibrium value of the pion phase space occupancy parameter γq> 1 is expected in order to accommodate the entropy excess in QGP and the process of gluon fragmentation. When γq is near to its maximum allowed value, pion overabundance is shown to arise at low m⊥, where the charged pion asymmetry is also amplified. These effects are considered and we show that their magnitude suffices to explain pertinent experimental data obtained in 160-200 A GeV Pb- and S- induced reactions.

UR - https://www.scopus.com/pages/publications/85037487469

UR - https://www.scopus.com/pages/publications/85037487469#tab=citedBy

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DO - 10.1016/S0370-2693(00)00088-5

M3 - Article

SN - 0370-2693

VL - 475

SP - 213

EP - 219

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Low-m⊥ π⁺-π^- asymmetry enhancement from hadronization of QGP

Abstract

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