Thermal description of hadron production in e+e- collisions revisited

A. Andronic; F. Beutler; P. Braun-Munzinger; K. Redlich; J. Stachel

doi:10.1016/j.physletb.2009.04.024

Thermal description of hadron production in e⁺e^- collisions revisited

A. Andronic, F. Beutler, P. Braun-Munzinger, K. Redlich, J. Stachel

Institute of Cosmology & Gravitation

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

Abstract

We present a comprehensive analysis of hadron production in e⁺e⁻ collisions at different center-of-mass energies in the framework of the statistical model of the hadron resonance gas. The model is formulated in the canonical ensemble with exact conservation of all relevant quantum numbers. The parameters of the underlying model were determined using a fit to the average multiplicities of the latest measurements at √s=10, 29–35, 91 and 130–200 GeV. The results demonstrate that, within the accuracy of the experiments, none of the data sets is satisfactorily described with this approach, calling into question the notion that particle production in e⁺e⁻ collisions is thermal in origin.

Original language	English
Pages (from-to)	312-318
Number of pages	7
Journal	Physical Letters B
Volume	675
Issue number	3-4
Early online date	11 Apr 2009
DOIs	https://doi.org/10.1016/j.physletb.2009.04.024
Publication status	Published - 18 May 2009

Keywords

hep-ph

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10.1016/j.physletb.2009.04.024

Cite this

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title = "Thermal description of hadron production in e+e- collisions revisited",

abstract = "We present a comprehensive analysis of hadron production in e+e− collisions at different center-of-mass energies in the framework of the statistical model of the hadron resonance gas. The model is formulated in the canonical ensemble with exact conservation of all relevant quantum numbers. The parameters of the underlying model were determined using a fit to the average multiplicities of the latest measurements at √s=10, 29–35, 91 and 130–200 GeV. The results demonstrate that, within the accuracy of the experiments, none of the data sets is satisfactorily described with this approach, calling into question the notion that particle production in e+e− collisions is thermal in origin.",

keywords = "hep-ph",

author = "A. Andronic and F. Beutler and P. Braun-Munzinger and K. Redlich and J. Stachel",

note = "13 pages, 3 figures; v2: final version accepted for publication in Phys. Lett. B",

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T1 - Thermal description of hadron production in e+e- collisions revisited

AU - Andronic, A.

AU - Beutler, F.

AU - Braun-Munzinger, P.

AU - Redlich, K.

AU - Stachel, J.

N1 - 13 pages, 3 figures; v2: final version accepted for publication in Phys. Lett. B

PY - 2009/5/18

Y1 - 2009/5/18

N2 - We present a comprehensive analysis of hadron production in e+e− collisions at different center-of-mass energies in the framework of the statistical model of the hadron resonance gas. The model is formulated in the canonical ensemble with exact conservation of all relevant quantum numbers. The parameters of the underlying model were determined using a fit to the average multiplicities of the latest measurements at √s=10, 29–35, 91 and 130–200 GeV. The results demonstrate that, within the accuracy of the experiments, none of the data sets is satisfactorily described with this approach, calling into question the notion that particle production in e+e− collisions is thermal in origin.

AB - We present a comprehensive analysis of hadron production in e+e− collisions at different center-of-mass energies in the framework of the statistical model of the hadron resonance gas. The model is formulated in the canonical ensemble with exact conservation of all relevant quantum numbers. The parameters of the underlying model were determined using a fit to the average multiplicities of the latest measurements at √s=10, 29–35, 91 and 130–200 GeV. The results demonstrate that, within the accuracy of the experiments, none of the data sets is satisfactorily described with this approach, calling into question the notion that particle production in e+e− collisions is thermal in origin.

KW - hep-ph

U2 - 10.1016/j.physletb.2009.04.024

DO - 10.1016/j.physletb.2009.04.024

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SP - 312

EP - 318

JO - Physical Letters B

JF - Physical Letters B

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