Highly excited $B$, $B_s$ and $B_c$ meson spectroscopy from lattice QCD

Abstract

Excited state spectra of $B$, $B_s$ and $B_c$ mesons are computed using lattice QCD. Working with a large basis of carefully constructed, approximately-local $q\bar{q}$-like operators we determine a rich spectrum of states up to $J=4$ in $B,B_s$ and $B_c$, that can be grouped into patterns matching those of the quark model. In addition, hybrid-like states are identified at approximately 1500 MeV above the ground states in each of $B,B_s$ and $B_c$, in a multiplet pattern already found in similar computations at a range of quark masses spanning light to bottom. This study is performed using an anisotropic, relativistic Wilson-clover action at a single spatial lattice spacing of $a_s\approx 0.12$ fm and with a light-quark mass corresponding to $m_{\pi }\approx 391$ MeV. We find good agreement with experimental results where known and discuss prospects for further work in interesting $J^P$ quantum numbers.

26 pages, 14 figures

References in corpus (21)

• A novel quark-field creation operator construction for hadronic physics in lattice QCD
• Excited and exotic charmonium spectroscopy from lattice QCD
• Toward the excited meson spectrum of dynamical QCD
• S and D-wave phase shifts in isospin-2 pi pi scattering from lattice QCD
• The Flavor Structure of the Excited Baryon Spectra from Lattice QCD
• Isoscalar meson spectroscopy from lattice QCD
• Tuning for Three-flavors of Anisotropic Clover Fermions with Stout-link Smearing
• Adaptive multigrid algorithm for the lattice Wilson-Dirac operator
• Coupled-Channel $D\pi$, $D\eta$ and $D_s\bar{K}$ Scattering from Lattice QCD
• Excited and exotic charmonium, $D_s$ and $D$ meson spectra for two light quark masses from lattice QCD
• Spectroscopy of doubly-charmed baryons from lattice QCD
• Excited bottom and bottom-strange mesons in the quark model
• New lattice action for heavy quarks
• Precise B, B_s and B_c meson spectroscopy from full lattice QCD
• The static-light meson spectrum from twisted mass lattice QCD
• Excitations of single-beauty hadrons
• Threshold effects in P-wave bottom-strange mesons
• Exotic Tetraquark states with two $\bar{b}$-quarks and $J^P=0^{+}$ and $1^{+}$ $B_s$ states in a nonperturbatively-tuned Lattice NRQCD setup
• Towards the discovery of novel $B_c$ states: radiative and hadronic transitions
• Scalar and tensor charmonium resonances in coupled-channel scattering from QCD
• Radial and orbital excitations of static-light mesons

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