Effects of local parity nonconservation in strong interactions in Pb-Pb collisions at LHC energy

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Abstract

Accounting for the effects of local parity nonconservation in a strongly interacting medium is implemented within the framework of the Monte Carlo model. Predictions are obtained for the distributions of the invariant masses of di-muons and di-electrons from the decays of light vector mesons in Pb-Pb collisions at the LHC energy, taking into account the resolution of the detecting systems. The influence of fluctuations of the axial chemical potential is estimated.

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About the authors

V. N. Kovalenko

Saint-Petersburg State University

Author for correspondence.
Email: v.kovalenko@spbu.ru
Russian Federation, St. Petersburg, 199034

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Supplementary files

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2. Fig. 1. Distribution of invariant masses of di-muons from decays of ρ- and ω-mesons without taking into account detector effects in the presence of a medium violating P-parity at μ5 = 0.1 GeV: without selection by the angle θA between leptons (a), under the condition 0.4 < θA < 0.5 (b).

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3. Fig. 2. Distribution of invariant masses of di-muons (a, c) and di-electrons (b, d) from decays of ρ- and ω-mesons under the conditions of the ALICE Run 2 experiment at μ5 = 0.1 GeV: without selection by angle θA (a, b), under the condition 0.4 < θA < 0.8 (c), under the condition 0.4 < θA < 0.5 (d).

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4. Fig. 3. Distribution of invariant masses of di-muons (a, c) and di-electrons (b, d) from decays of ρ- and ω-mesons under the expected conditions of the ALICE Run 3 experiment at μ5 = 0.1 GeV: without selection by angle θA (a, b), under the condition 0.4 < θA < 0.5 (c, d).

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5. Fig. 4. Effect of axial chemical potential fluctuations on the splitting of the spectral functions of ρ- and ω-mesons in the spectrum of invariant masses of di-muons (a, c) and di-electrons (b, d): 0.05 GeV < μ5 < 0.15 GeV (σμ ≈ 30%) (a, b), 0 GeV < μ5 < 0.2 GeV (σμ ≈ 60%) (c, d). The resolving power of the ALICE experiment under Run 3 conditions is taken into account.

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