PT Journal
AU Bernardoni, F
   Blossier, B
   Bulava, J
   Della Morte, M
   Fritzsch, P
   Garron, N
   Gerardin, A
   Heitger, J
   von Hippel, G
   Simma, H
TI B-meson spectroscopy in HQET at order 1/m
SO Physical Review D
JI Phys. Rev. D
PY 2015
BP 054509
EP 25pp
VL 92
IS 5
DI 10.1103/PhysRevD.92.054509
LA English
AB 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(b) and nonperturbative in the strong coupling. Our analyses have been performed on N-f = 2 lattice gauge field ensembles corresponding to three different lattice spacings and a wide range of pion masses. We obtain the B-s-meson mass and hyperfine splittings of the B-and B-s-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 B-s systems.
ER