π+-π0 mass difference at finite temperature

Joseph I. Kapusta; Vladimir Višnjić

doi:10.1016/0370-2693(84)90616-6

π⁺-π⁰ mass difference at finite temperature

Joseph I. Kapusta, Vladimir Višnjić

Physics and Astronomy (Twin Cities)

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

3 Scopus citations

Abstract

The electromagnetic mass difference of pions at finite temperature is computed. The finite temperature contribution to δm²_π ≡ m²_π+ - m²_π0 is obtained to be παT², neglecting the corrections due to the ρ{variant} and A₁ mesons. It has the same sign as the zero temperature value and is comparable to it in magnitude around T ≈ 200 MeV. The calculation is also done in case of supersymmetric QCD where it is known that at T = 0 δm²_π = 0. The results may have implications for cosmology and for relativistic heavy ion collisions.

Original language	English (US)
Pages (from-to)	181-185
Number of pages	5
Journal	Physics Letters B
Volume	147
Issue number	1-3
DOIs	https://doi.org/10.1016/0370-2693(84)90616-6
State	Published - Nov 1 1984

Bibliographical note

Funding Information:
V.V. would like to thank N.D. Hari Dass for reading the manuscript and for useful comments. This research was supported in part by the US Department of Energy under contract DOE/DE-AC02-79ER-10364.

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title = "π+-π0 mass difference at finite temperature",

abstract = "The electromagnetic mass difference of pions at finite temperature is computed. The finite temperature contribution to δm2π ≡ m2π+ - m2π0 is obtained to be παT2, neglecting the corrections due to the ρ{variant} and A1 mesons. It has the same sign as the zero temperature value and is comparable to it in magnitude around T ≈ 200 MeV. The calculation is also done in case of supersymmetric QCD where it is known that at T = 0 δm2π = 0. The results may have implications for cosmology and for relativistic heavy ion collisions.",

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AU - Višnjić, Vladimir

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N2 - The electromagnetic mass difference of pions at finite temperature is computed. The finite temperature contribution to δm2π ≡ m2π+ - m2π0 is obtained to be παT2, neglecting the corrections due to the ρ{variant} and A1 mesons. It has the same sign as the zero temperature value and is comparable to it in magnitude around T ≈ 200 MeV. The calculation is also done in case of supersymmetric QCD where it is known that at T = 0 δm2π = 0. The results may have implications for cosmology and for relativistic heavy ion collisions.

AB - The electromagnetic mass difference of pions at finite temperature is computed. The finite temperature contribution to δm2π ≡ m2π+ - m2π0 is obtained to be παT2, neglecting the corrections due to the ρ{variant} and A1 mesons. It has the same sign as the zero temperature value and is comparable to it in magnitude around T ≈ 200 MeV. The calculation is also done in case of supersymmetric QCD where it is known that at T = 0 δm2π = 0. The results may have implications for cosmology and for relativistic heavy ion collisions.

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