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Dilepton excess from local parity breaking in baryon matter. / Andrianov, A.A.; Andrianov, V.A.; Espriu, D.; Plannels, X.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 710, No. 1, 2012, p. 230-235.

Research output: Contribution to journal › Article

Harvard

Andrianov, AA, Andrianov, VA, Espriu, D & Plannels, X 2012, 'Dilepton excess from local parity breaking in baryon matter', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 710, no. 1, pp. 230-235. https://doi.org/doi:10.1016/j.physletb.2012.02.072

APA

Andrianov, A. A., Andrianov, V. A., Espriu, D., & Plannels, X. (2012). Dilepton excess from local parity breaking in baryon matter. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 710(1), 230-235. https://doi.org/doi:10.1016/j.physletb.2012.02.072

Vancouver

Andrianov AA, Andrianov VA, Espriu D, Plannels X. Dilepton excess from local parity breaking in baryon matter. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2012;710(1):230-235. https://doi.org/doi:10.1016/j.physletb.2012.02.072

Author

Andrianov, A.A. ; Andrianov, V.A. ; Espriu, D. ; Plannels, X. / Dilepton excess from local parity breaking in baryon matter. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2012 ; Vol. 710, No. 1. pp. 230-235.

BibTeX

@article{c8d161fe7fcb4bc28f63f4cc6b0d41fc,
title = "Dilepton excess from local parity breaking in baryon matter",
abstract = "We propose that local parity breaking induced by a large-scale fluctuation of topological charge at large temperatures and/or condensation of pseudoscalar mesons in the isotriplet channel for large baryon densities may be responsible for the substantial dilepton excess that is found for low invariant masses and moderate values of pT in central heavy ions collisions. This insofar unexplained enhancement could be understood by a combination of two effects leading to an excess of both e+e− and μ+μ− pairs with respect to theoretical predictions based on conventional hadronic processes: (a) a modification of the dispersion relation of photons and vector mesons propagating in such a nuclear medium due to local parity breaking; (b) the appearance of new decay channels, forbidden by parity conservation in QCD in the usual vacuum. Possible signatures of this effect and perspectives for its detection are discussed.",
keywords = "Quantum Chromodynamics, baryon matter, parity violation",
author = "A.A. Andrianov and V.A. Andrianov and D. Espriu and X. Plannels",
year = "2012",
doi = "doi:10.1016/j.physletb.2012.02.072",
language = "English",
volume = "710",
pages = "230--235",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "1",

}

RIS

TY - JOUR

T1 - Dilepton excess from local parity breaking in baryon matter

AU - Andrianov, A.A.

AU - Andrianov, V.A.

AU - Espriu, D.

AU - Plannels, X.

PY - 2012

Y1 - 2012

N2 - We propose that local parity breaking induced by a large-scale fluctuation of topological charge at large temperatures and/or condensation of pseudoscalar mesons in the isotriplet channel for large baryon densities may be responsible for the substantial dilepton excess that is found for low invariant masses and moderate values of pT in central heavy ions collisions. This insofar unexplained enhancement could be understood by a combination of two effects leading to an excess of both e+e− and μ+μ− pairs with respect to theoretical predictions based on conventional hadronic processes: (a) a modification of the dispersion relation of photons and vector mesons propagating in such a nuclear medium due to local parity breaking; (b) the appearance of new decay channels, forbidden by parity conservation in QCD in the usual vacuum. Possible signatures of this effect and perspectives for its detection are discussed.

AB - We propose that local parity breaking induced by a large-scale fluctuation of topological charge at large temperatures and/or condensation of pseudoscalar mesons in the isotriplet channel for large baryon densities may be responsible for the substantial dilepton excess that is found for low invariant masses and moderate values of pT in central heavy ions collisions. This insofar unexplained enhancement could be understood by a combination of two effects leading to an excess of both e+e− and μ+μ− pairs with respect to theoretical predictions based on conventional hadronic processes: (a) a modification of the dispersion relation of photons and vector mesons propagating in such a nuclear medium due to local parity breaking; (b) the appearance of new decay channels, forbidden by parity conservation in QCD in the usual vacuum. Possible signatures of this effect and perspectives for its detection are discussed.

KW - Quantum Chromodynamics

KW - baryon matter

KW - parity violation

U2 - doi:10.1016/j.physletb.2012.02.072

DO - doi:10.1016/j.physletb.2012.02.072

M3 - Article

VL - 710

SP - 230

EP - 235

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

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

SN - 0370-2693

IS - 1

ER -

ID: 5378692