Beauty hadron lifetimes and B-meson CP-violation parameters from lattice QCD

被引：0

作者：

Cecilia Tarantino

机构：

[1] Dip. di Fisica,

[2] Univ. di Roma Tre and INFN,undefined

[3] Sezione di Roma III,undefined

[4] Via della Vasca Navale 84,undefined

[5] I-00146 Rome,undefined

来源：

The European Physical Journal C - Particles and Fields | 2004年 / 33卷 / Suppl 1期

关键词：

Present Status; Theoretical Estimate; Width Difference; Perturbative Calculation; Bottom Meson;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The present status of the theoretical estimates of beauty hadron lifetime ratios and of width differences and CP-violation parameters in Bd and Bs 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(Bd)= 1.06 ± 0.02, τ(Bs)/τ(Bd)= 1.00 ± 0.01, τ(Λb)/τ(Bd)= 0.88 ± 0.05, ΔΓd/Γd = (2.42 ± 0.59)10–3, ΔΓs/Γs = (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.

引用

页码：s895 / s899

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