The Light-Front Model for Exclusive Semileptonic B- and D-decays

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dc.creatorDemchuk, N. B.
dc.creatorKulikov, P. Yu.
dc.creatorNarodetskii, I. M.
dc.creatorO'Donnell, Patrick J.
dc.date1997-01-27
dc.date1997-02-12
dc.date.accessioned2026-07-07T09:03:28Z
dc.date.available2026-07-07T09:03:28Z
dc.descriptionAn explicit relativistic light-front quark model is presented which gives the momentum transfer dependent form factors of weak hadronic currents among heavy pseudoscalar and vector mesons in the whole accessible kinematic region $ 0\leq q^2 \leq q^2_{max} $. For the numerical investigations of the $ B \to D^* l ν_l $, $ B \to ρl ν_l $, $ D\to K^* l ν_l $ and $ D \to ρl ν_l $ semileptonic decays the equal time wave functions corresponding to the updated version of the ISGW model are adopted. Using the available experimental information on branching fractions $ BR(B \to D^* l ν_l) $ and $ BR(B \to ρl ν_l) $ the CKM parameters $ V_{cb} $ and $ V_{ub} $ were estimated: $ |V_{cb}| = 0.036 \pm 0.004 $, $ |V_{ub}| = 0.0033 \pm 0.0004 $. The model is further tested by comparison with experimental data, QCD sum rules and lattice calculations.
dc.description27 pages, Latex, with 9 postscript figures; some different references and numbers in table 5. Thanks to P. Ball for comments
dc.identifierhttps://arxiv.org/abs/hep-ph/9701388
dc.identifierhttp://arxiv.org/abs/hep-ph/9701388
dc.identifierPhys.Atom.Nucl. 60 (1997) 1292-1304; Yad.Fiz. 60N8 (1997) 1429-1441
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/149018
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Light-Front Model for Exclusive Semileptonic B- and D-decays
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