B-meson spectroscopy in HQET at order 1/m

Abstract

We present a study of the B spectrum performed in the framework of Heavy Quark Effective Theory expanded to next-to-leading order in 1/m and non-perturbative in the strong coupling. Our analyses have been performed on Nf=2 lattice gauge field ensembles corresponding to three different lattice spacings and a wide range of pion masses. We obtain the Bs-meson mass and hyperfine splittings of the B- and Bs-mesons that are in good agreement with the experimental values and examine the mass difference m_{Bs}-m_B as a further cross-check of our previous estimate of the b-quark mass. We also report on the mass splitting between the first excited state and the ground state in the B and Bs systems.

35 pages, 14 tables, 17 figures; Introduction extended and typos corrected. Version accepted for publication in PRD

References in corpus (17)

• Big-Bang Nucleosynthesis
• On the generalized eigenvalue method for energies and matrix elements in lattice field theory
• Simulation of QCD with N_f=2+1 flavors of non-perturbatively improved Wilson fermions
• Critical slowing down and error analysis in lattice QCD simulations
• Precise B, B_s and B_c meson spectroscopy from full lattice QCD
• The static-light meson spectrum from twisted mass lattice QCD
• Precision lattice QCD computation of the $B^{\ast }B\pi$ coupling
• Decay constants of B-mesons from non-perturbative HQET with two light dynamical quarks
• Excitations of single-beauty hadrons
• Parameters of Heavy Quark Effective Theory from Nf=2 lattice QCD
• Nucleon-pion-state contribution to nucleon two-point correlation functions
• HQET at order $1/m$: II. Spectroscopy in the quenched approximation
• HQET at order 1/m: III. Decay constants in the quenched approximation
• Energies of B_s meson excited states - a lattice study
• Radial and orbital excitations of static-light mesons
• Domain decomposition improvement of quark propagator estimation
• Lattice inputs to Flavor Physics

Cited by in corpus (5)

• Weak decays of unstable $b$-mesons
• Continuum limit of the leading order HQET form factor in $B_s\to K\ell \nu$ decays
• Highly excited $B$, $B_s$ and $B_c$ meson spectroscopy from lattice QCD
• Density distributions in the $B$ meson
• First exclusive reconstruction of the B${}^{\ast +}$, B${}^{\ast 0}$, and B${}_{\text{s}}^{\ast 0}$ mesons and precise measurement of their masses