In-medium mass shift of two-flavored heavy mesons, $B_c$, $B_c^{\ast }$, $B_s$, $B_s^{\ast }$, $D_s$ and $D_s^{\ast }$

Abstract

For the first time, we estimate the in-medium mass shift of the two-flavored heavy mesons $B_c,B_c^{\ast },B_s,B_s^{\ast },D_s$ and $D_s^{\ast }$ in symmetric nuclear matter. The estimates are made by evaluating the lowest order one-loop self-energies. The enhanced excitations of intermediate state heavy-light mesons in symmetric nuclear matter are the origin of their negative mass shift. This negative mass shift may be regarded as a signature of partial restoration of chiral symmetry in an empirical sense because the origin of the negative mass shift in the study is not directly related to the chiral symmetry mechanism. Our results show that the magnitude of the mass shift for the $B_c$ meson ($\bar{b}c$ or $b\bar{c}$) is larger than those of the ${\eta }_c(\bar{c}c)$ and ${\eta }_b(\bar{b}b)$, different from a naive expectation that it would be in between them. While, that of the $B_c^{\ast }$ shows the in between of the $J/\psi$ and ${\rm Y}$. We observe that the lighter vector meson excitation in each meson self-energy gives a dominant contribution for the corresponding meson mass shift, $B_c,B_s,$ and $D_s$.

24 pages, 21 figures (44 .eps files for figures), changes: unnecessary files removed, 1 figure corrected, 2 figures added

References in corpus (21)

• QCD sum rules for D and B mesons in nuclear matter
• J/Psi mass shift in nuclear matter
• First observation of a nuclear $s$-state of $\Xi$ hypernucleus, ${}_{\Xi }^{15}\mathrm{C}$
• More about the $B$ and $D$ mesons in nuclear matter
• Measurement of sequential ${\rm Y}$ suppression in Au+Au collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV with the STAR experiment
• Search for flavor-changing neutral current interactions of the top quark and Higgs boson in final states with two photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Spectroscopic survey of higher-lying states of $B_c$ meson family
• Towards the discovery of novel $B_c$ states: radiative and hadronic transitions
• Observation of the B${}_{\mathrm{c}}^{+}$ meson in PbPb and pp collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV and measurement of its nuclear modification factor
• Production of ${\rm Y}(\text{nS})$ mesons in Pb+Pb and $pp$ collisions at 5.02 TeV
• $D{\bar{D}}^{\ast }$ scattering and ${\chi }_{c1}(3872)$ in nuclear matter
• Higher states of the $B_c$ meson family
• The first limit on invisible decays of $B_s$ mesons comes from LEP
• Recombination of $B_c$ mesons in ultra-relativistic heavy-ion collisions
• New physics footprints in the angular distribution of $B_s\to D_s^{\ast }(\to D_s\gamma ,D_s\pi )\tau \nu$ decays
• Measurement of beauty-strange meson production in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV via non-prompt ${{\mathrm{D}}_{\mathrm{s}}}^{+}$ mesons
• Angular distribution of the FCNC process $B_c\to D_s^{\ast }(\to D_s\pi ){\ell }^{+}{\ell }^{-}$
• Prediction of various observables for $B_s^0\to D_s^{(\ast )-}{\ell }^{+}{\nu }_{\ell }$ within covariant confined quark model
• Searching $B_c^{\ast }$ via conservation laws
• The NA60+ experiment at the CERN SPS to study dilepton and heavy quark production at large ${\mu }_B$
• A search for rare $B\to D{\mu }^{+}{\mu }^{-}$ decays

Cited by in corpus (3)

• Heavy-heavy and heavy-light mesons in cold nuclear matter
• $B_c^{\pm }$-${}^{12}$C states and detailed study of momentum space method for ${\rm Y}$- and ${\eta }_b$-nucleus bound states
• Medium modifications of $1P$-wave charmonia ${\chi }_{cJ}(1P)$ in cold nuclear matter