Form Factor for $B{\to}D l\tildeν$ in Light-Cone Sum Rules With Chiral Current Correlator

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dc.creatorZuo, Fen
dc.creatorLi, Zuo-Hong
dc.creatorHuang, Tao
dc.date2006-06-18
dc.date2006-08-16
dc.date.accessioned2026-07-07T10:41:45Z
dc.date.available2026-07-07T10:41:45Z
dc.descriptionWithin the framework of QCD light-cone sum rules (LCSR), we calculate the form factor for $B{\to}D l\tildeν$ transitions with chiral current correlator. The resulting form factor depends on the distribution amplitude(DA) of the $D$-meson. We try to use three kinds of DA models of the $D$-meson. In the velocity transfer region $1.14 < y < 1.59$, which renders the Operator Product Expansion (OPE) near light-cone $x^2=0$ go effectively, the yielding behavior of form factor is in agreement with that extracted from the data on $ B\to D l\tildeν$, within the error. In the larger recoil region $1.35 < y < 1.59$, the results are observed consistent with those of perturbative QCD (pQCD). The presented calculation can play a bridge role connecting those from the lattice QCD with the heavy quark symmetry and perturbative QCD(pQCD) to have an all-around understanding of $B{\to}D l\tildeν$ transitions.
dc.description13 pages, 4figures,published version in PLB
dc.identifierhttps://arxiv.org/abs/hep-ph/0606187
dc.identifierhttp://arxiv.org/abs/hep-ph/0606187
dc.identifierPhys.Lett.B641:177-182,2006
dc.identifierdoi:10.1016/j.physletb.2006.07.039
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181722
dc.subjectHigh Energy Physics - Phenomenology
dc.titleForm Factor for $B{\to}D l\tildeν$ in Light-Cone Sum Rules With Chiral Current Correlator
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