6533b7dcfe1ef96bd1273432
RESEARCH PRODUCT
Nonperturbative effects in semileptonicBcdecays
Stefan WolfThomas Mannelsubject
PhysicsHigh Energy Physics - PhenomenologyNuclear and High Energy PhysicsParticle physicsHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::PhenomenologyFOS: Physical sciencesHeavy quark effective theoryHigh Energy Physics::ExperimentBottom quarkdescription
We discuss the impact of the soft degrees of freedom inside the B_c meson on its rate in the semi-leptonic decay B_c -> X l nu_l where X denotes light hadrons below the D^0 threshold. In particular we identify contributions involving soft hadrons which are non-vanishing in the limit of massless leptons. These contributions become relevant for a measurement of the purely leptonic B_c decay rate, which due to helicity suppression involves a factor m_l^2 and thus is much smaller than the contributions involving soft hadrons.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-09-26 | Physical Review D |