https://doi.org/10.1140/epjcd/s2003-03-1006-y
PS10 Non-perturbative Field Theory
Beauty hadron lifetimes and B-meson CP-violation parameters from lattice QCD
Dip. di Fisica, Univ. di Roma Tre and INFN, Sezione di Roma III, Via della Vasca Navale 84, I-00146 Rome, Italy
Received:
22
September
2003
Accepted:
6
September
2003
Published online:
22
October
2003
The present status of the theoretical estimates of beauty hadron lifetime ratios and of width differences and CP-violation parameters in B d and B s systems is reviewed. In the last two years accurate lattice calculations and next-to-leading order perturbative computations have improved these theoretical predictions, leading to the following updated results: τ(B +)/τ(B d )= 1.06 ± 0.02, τ(B s )/τ(B d )= 1.00 ± 0.01, τ(Λ b )/τ(B d )= 0.88 ± 0.05, Δ Γ d /Γ d = (2.42 ± 0.59)10–3, Δ Γ s /Γ s = (7.4 ± 2.4)10–2, ∣(q/p) d ∣–1=(2.96 ± 0.67) 10–4 and ∣(q/p) s ∣–1=–(1.28 ± 0.28) 10–5.
PACS: 11.30.Er CP violation – 12.38.Aw Perturbative calculations – 12.38.Gc Lattice QCD calculations – 14.20.Mr Bottom baryons – 14.40.Nd Bottom mesons
© Società Italiana di Fisica, Springer-Verlag, 2004
