Remarks on Semileptonic B and D Decays into Orbitally Excited Mesons

Abstract

We have obtained the differential decay rate and calculated the branching ratios of the exclusive semileptonic decays $B(D)\to Xl\nu$, 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 $Br(B_c^{-}\to \overline{B_{s2}^{\ast 0}}{l}^{-}\bar{\nu })=4.03\times 10^{-5}$, $Br(B_c^{-}\to \overline{B_2^{\ast 0}}{l}^{-}\bar{\nu })=3.65\times 10^{-6}$ and $Br(D_s^{+}\to f_2{l}^{+}\nu )=2.7\times 10^{-5}$, which seems to be at the reach of forthcoming experiments. Furthermore, we have classified the $B_{u,d,s}\to Tl\nu$ decays in two groups and compared the semileptonic and nonleptonic decays including a tensor meson in the final state.

11 pages, LaTeX

References in corpus (7)

• Decays of the Meson $B_c$ to a $P$-Wave Charmonium State ${\chi }_c$ or $h_c$
• Study of Rare $B_c^{+}\to D_{d,s}^{(\ast )+}l\bar{l}$ Decays
• Nonleptonic two-body charmless B decays involving a tensor meson in ISGW2 model
• Subleading Isgur-Wise form factors and O(1/m_Q) corrections to the semileptonic decays B->D_1 l\barνand B->D_2^* l\barν
• Non-perturbative effects in semi-leptonic B_c decays
• Information on $B\to \pi \pi$ Provided by the Semileptonic Process $B\to \pi l\nu$
• Semileptonic B Decays into Excited Charmed Mesons ($D_1$, $D_2^{\ast }$) in HQEFT

Cited by in corpus (2)

• Measurement of the B0_s semileptonic branching ratio to an orbitally excited D_s** state, Br(B0_s -> Ds1(2536) mu nu)
• Tensor mesons produced in tau lepton decays