Production of orbitally excited charm mesons in semileptonic B decays
نویسندگان
چکیده
منابع مشابه
Semileptonic B Decays to Excited Charm Mesons
Exclusive semileptonic B decays to the lightest excited charmed mesons are investigated at order ΛQCD/mQ in the heavy quark effective theory. At zero recoil, ΛQCD/mQ corrections to the matrix elements of the weak currents can be written in terms of the leading Isgur-Wise functions for the corresponding transition and meson mass splittings. The differential decay rates are predicted, including Λ...
متن کاملMeasurement of semileptonic B decays into orbitally excited charmed mesons.
We present a study of B decays into semileptonic final states containing charged and neutral D1(2420) and D_{2};{*}(2460). The analysis is based on a data sample of 208 fb;{-1} collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted...
متن کاملSemileptonic B decays to excited charmed mesons
Exclusive semileptonic B decays into excited charmed mesons are investigated at order ΛQCD/mQ in the heavy quark effective theory. Differential decay rates for each helicity state of the four lightest excited D mesons (D1, D ∗ 2, D∗ 0, andD ∗ 1) are examined. At zero recoil, ΛQCD/mQ corrections to the matrix elements of the weak currents can be written in terms of the leading IsgurWise function...
متن کاملB decays to excited charm mesons
The spectroscopy of hadrons containing one heavy quark Q, in the infinite mQ limit, is simplified by the decoupling of the heavy quark spin ~sQ from the angular momentum of the light degrees of freedom (quarks and gluons) ~sl = ~ J − ~sQ. In this heavy quark theory (HQET) the states are classified by both ~ J and ~sl, and the hadrons corresponding to the same sl belong to degenerate doublets. I...
متن کاملRemarks on semileptonic B and D decays into orbitally excited mesons
We have obtained the differential decay rate and calculated the branching ratios of the exclusive semileptonic decays B(D) → Xlν, where X is a p-wave meson, using the nonrelativistic ISGW quark model. Our results are compared with the predictions of the ISGW2 model. We have computed some branching ratios that were not reported or were reported with 0.00 in this model. For example, we find that ...
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ژورنال
عنوان ژورنال: Zeitschrift f�r Physik C Particles and Fields
سال: 1997
ISSN: 0170-9739,1431-5858
DOI: 10.1007/s002880050351