B-meson mixing and lifetimes
نویسندگان
چکیده
منابع مشابه
B-Meson Mixing and Lifetimes
Bd and Bs meson systems play a fundamental role to test and improve our understanding of Standard Model flavor dynamics. The mixing parameters ∆md,s represent important constraints in the unitarity triangle analysis. Their theoretical estimates require non-perturbative calculations of B-meson decay constants and B-parameters; accurate results, recently obtained from the lattice, are reviewed. O...
متن کاملB Lifetimes and Mixing
The Tevatron experiments, CDF and D0, have produced a wealth of new B-physics results since the start of Run II in 2001. We’ve observed new B-hadrons, seen new effects, and increased many-fold the precision with which we know the properties of b-quark systems. In these proceedings, we will discuss two of the most fruitful areas in the Tevatron B-physics program: lifetimes and mixing. We’ll exam...
متن کاملB Mixing and Lifetimes at the Tevatron
The Tevatron collider at Fermilab, operating at √ s = 1.96 TeV, has a huge bb̄ production cross section which is several orders of magnitude larger than the production rate at ee colliders running on the Υ(4S) resonance. In addition, on the Υ(4S) only B and B d are produced, while higher mass b-hadrons such as B s , Bc, b-baryons, B , and p-wave B mesons are currently produced only at the Tevatr...
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The nonleptonic two-body decays of mesons are conventionally evaluated under the factorization hypothesis. In the factorization approach, the decay amplitude is expressed in terms of factorizable hadronic matrix elements multiplied by some combinations of Wilson coefficient functions. To be more specific, the factorization hypothesis assumes that the 3-body hadronic matrix element 〈h1h2|O|M〉 fo...
متن کاملMeasurements of b–hadron lifetimes and b–meson oscillations
In the spectator model, where the weak decay of the heavy quark is described neglecting the strong interactions with the light quark(s) in the heavy–flavoured hadron, all the hadrons containing the same heavy quark are predicted to have equal lifetimes. This model fails dramatically for charmed particles. Non–spectator effects like weak annihilation, W exchange and final state quark interferenc...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2006
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2006.02.119