Open bottom mesons in hot asymmetric hadronic medium

Abstract

The in-medium masses and optical potentials of $B$ and $\bar{B}$ mesons are studied in an isospin asymmetric, strange, hot and dense hadronic environment using a chiral effective model. The chiral $SU(3)$ model originally designed for the light quark sector, is generalized to include the heavy quark sector ($c$ and $b$) to derive the interactions of the $B$ and $\bar{B}$ mesons with the light hadrons. Due to large mass of bottom quark, we use only the empirical form of these interactions for the desired purpose, while treating the bottom degrees of freedom to be frozen in the medium. Hence, all medium effects are due to the in-medium interaction of the light quark content of these open-bottom mesons. Both $B$ and $\bar{B}$ mesons are found to experience net attractive interactions in the medium, leading to lowering of their masses in the medium. The mass degeneracy of particles and antiparticles, ($B^{+}$, $B^{-}$) as well as ($B^0$, $\overline{B^0}$), is observed to be broken in the medium, due to equal and opposite contributions from a vectorial Weinberg-Tomozawa interaction term. Addition of hyperons to the medium lowers further the in-medium mass for each of these four mesons, while a non-zero isospin asymmetry is observed to break the approximate mass degeneracy of each pair of isospin doublets. These medium effects are found to be strongly density dependent, and bear a considerably weaker temperature dependence. The results obtained in the present investigation are compared to predictions from the quark-meson coupling model, heavy meson effective theory, and the QCD Sum Rule approach.

38 pages,11 figures,major revision,published in Phys.Rev.C

References in corpus (16)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freeze-out in Heavy Ion Collisions
• Heavy Flavor at the Large Hadron Collider in a Strong Coupling Approach
• QCD sum rules for D and B mesons in nuclear matter
• Charmonium and open charm production in nuclear collisions at SPS/FAIR energies and the possible influence of a hot hadronic medium
• Exotic nuclei with open heavy flavor mesons
• Decay constants of heavy pseudoscalar mesons from QCD sum rules
• D-mesons in asymmetric nuclear matter
• $J/\psi$ and ${\eta }_c$ masses in isospin asymmetric hot nuclear matter - a QCD sum rule approach
• Kaon and antikaon optical potentials in isospin asymmetric hyperonic matter
• Isospin dependent kaon and antikaon optical potentials in dense hadronic matter
• Kaons and antikaons in asymmetric nuclear matter
• Open bottom states and the anti-B meson propagation in hadronic matter
• More about the $B$ and $D$ mesons in nuclear matter
• Transport properties of bottomed mesons in a hot mesonic gas
• Bottomonium states in hot asymmetric strange hadronic matter

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• Charm and Bottom Hadrons in Hot Hadronic Matter
• Decay widths of bottomonium states in matter -- a field theoretic model for composite hadrons
• Heavy Vector and Axial-Vector Mesons in Hot and Dense Asymmetric Strange Hadronic Matter
• In medium properties of $K^0$ and $\varphi$ mesons under an external magnetic field
• In-medium kinetic theory of $D$ mesons and heavy-flavor transport coefficients
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• Kaons and antikaons in strong magnetic fields
• QCD sum rule analysis of Heavy Quarkonium states in magnetized matter -- effects of (inverse) magnetic catalysis
• Masses and decay widths of scalar $D_0$ and $D_{s0}$ mesons in strange hadronic medium
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• Dirac sea effects on Heavy Quarkonia decay widths in magnetized matter -- a field theoretic model of composite hadrons
• Insights into the exotic charged states $Z_b(10610)$ and $Z_b(10650)$ from their photoproduction off nuclei
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