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arXiv · 2609.14440

Thermal modifications of the B-meson spectrum

Rachel Horohan D'Arcy·Benjamin Jäger·Seyong Kim·Jon-Ivar Skullerud
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Abstract

A first-principles investigation of heavy-light meson behaviour in hot QCD matter is essential for the interpretation of experimental results associated with open heavy flavour productions in relativistic heavy-ion collision experiments. Using anisotropic lattice ensembles from the FASTSUM collaboration with Nf=2+1 dynamical Wilson-clover fermions at non-zero temperatures, we study the B and B_s spectra at non-zero temperature. We use relativistic light quark propagators, while the b quark propagators are computed with a non-relativistic effective theory (NRQCD). We find that above T_c, thermal effects on the B meson states are more significant than those on the B_s states. Also, our results support the dissolution of the B-meson bound states above T_c.

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Rachel Horohan D'Arcy, Benjamin Jäger, Seyong Kim, Jon-Ivar Skullerud. 2026-09-13. Thermal modifications of the B-meson spectrum. https://arxiv.org/abs/2609.14440

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