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Chiral symmetry restoration with three chiral partners

by Juan M. Torres-Rincon

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Submission summary

Authors (as registered SciPost users): Juan Torres-Rincon
Submission information
Preprint Link: scipost_202201_00028v1  (pdf)
Date accepted: 2022-04-11
Date submitted: 2022-01-23 14:11
Submitted by: Torres-Rincon, Juan
Submitted to: SciPost Physics Proceedings
Proceedings issue: XXXIII International Workshop on High Energy Physics (IWHEP2021)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Phenomenology
Approaches: Theoretical, Phenomenological


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.

Published as SciPost Phys. Proc. 6, 015 (2022)

Submission & Refereeing History

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Submission scipost_202201_00028v1 on 23 January 2022

Reports on this Submission

Anonymous Report 1 on 2022-3-29 (Invited Report)

  • Cite as: Anonymous, Report on arXiv:scipost_202201_00028v1, delivered 2022-03-29, doi: 10.21468/SciPost.Report.4809


Chiral symmetry restoration at $T>T_c$ is considered in various models including those in which chiral partners in chiral doublets are generated dynamically. Particular attention is given to the $D^*_0(2300)$ resonance and its chiral partner $D$, the former having two-pole structure. It was found that the effective field model does not predict vanishing of mass difference between $D^*_0(2300)$ and $D$ at $T>T_c$. However, the author shows that this mass splitting may be decreased or even disappear provided that temperature dependence of pion decay constant is taken into account.

The contribution is characterised by clear presentation, thorough attention to comparison of various appraches, detailed analysis of various descriptions of the chiral transitions.

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