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Chiral symmetry restoration with three chiral partners

Juan M. Torres-Rincon

SciPost Phys. Proc. 6, 015 (2022) · published 31 May 2022

Proceedings event

XXXIII International Workshop on High Energy Physics


I discuss the masses of chiral partners in the context of chiral symmetry restoration at finite temperature. Using the Nambu–Jona-Lasinio model I first remind the usual situation where two mesons of opposed parity become degenerate above the chiral transition temperature. Then I consider an effective theory for D mesons where the positive parity companion presents a “double pole structure”. In this case three different masses need to be analyzed as functions of the temperature. I suggest a possible restoration pattern at high temperatures when the back-reaction of the quark condensate is incorporated.

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