Model Independent Calculation of ${\cal{B}}({\bar{B}}^0\to D^{(*)+} τ^- {\barν})/ {\cal{B}}({\bar{B}}^0\to D^{(*)+} e^- {\barν})$

Model Independent Calculation of ${\cal{B}}({\bar{B}}^0\to D^{()+} τ^- {\barν})/ {\cal{B}}({\bar{B}}^0\to D^{()+} e^- {\barν})$

dc.creator	Hwang, Dae Sung
dc.creator	Kim, Do-Won
dc.date	1998-06-03
dc.date	1999-01-05
dc.date.accessioned	2026-07-07T04:03:59Z
dc.date.available	2026-07-07T04:03:59Z
dc.description	Using the formulas for the $dΓ/ dq^2$ distribution with non-zero lepton mass and experimentally determined form factors, we calculate the $dΓ(D^{()+} l^- {\barν})/ dq^2$ spectra and branching fractions for $l=e$, $μ$ and $τ$. We obtain the results ${\cal{B}}({\bar{B}}^0\rightarrow D^{+} τ^- {\barν})/ {\cal{B}}({\bar{B}}^0\rightarrow D^{+} e^- {\barν})= 0.278^{+0.049}_{-0.035}$ and ${\cal{B}}({\bar{B}}^0\rightarrow D^{+} τ^- {\barν})/ {\cal{B}}({\bar{B}}^0\rightarrow D^{*+} e^- {\barν})= 0.256^{+0.014}_{-0.013}$ . Since we used the experimentally measured form factors, these results are independent of theoretical models of form factors.
dc.description	8 pages, 3 postscript figures. We corrected a mistake in computer program for the numerical calculation, and modified the title and contents
dc.identifier	https://arxiv.org/abs/hep-ph/9806242
dc.identifier	http://arxiv.org/abs/hep-ph/9806242
dc.identifier.uri	http://salesiana.dossiersoluciones.com/handle/123456789/47899
dc.subject	High Energy Physics - Phenomenology
dc.title	Model Independent Calculation of ${\cal{B}}({\bar{B}}^0\to D^{()+} τ^- {\barν})/ {\cal{B}}({\bar{B}}^0\to D^{()+} e^- {\barν})$
dc.type	text