Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Model Independent Calculation of ${\cal{B}}({\bar{B}}^0\to D^{(*)+}
  \tau^- {\bar{\nu}})/ {\cal{B}}({\bar{B}}^0\to D^{(*)+} e^- {\bar{\nu}})$   Using the formulas for the $d\Gamma / dq^2$ distribution with non-zero lepton
mass and experimentally determined form factors, we calculate the $d\Gamma
(D^{(*)+} l^- {\bar{\nu}})/ dq^2$ spectra and branching fractions for $l=e$,
$\mu$ and $\tau$. We obtain the results ${\cal{B}}({\bar{B}}^0\rightarrow D^{+}
\tau^- {\bar{\nu}})/ {\cal{B}}({\bar{B}}^0\rightarrow D^{+} e^- {\bar{\nu}})=
0.278^{+0.049}_{-0.035}$ and ${\cal{B}}({\bar{B}}^0\rightarrow D^{*+} \tau^-
{\bar{\nu}})/ {\cal{B}}({\bar{B}}^0\rightarrow D^{*+} e^- {\bar{\nu}})=
0.256^{+0.014}_{-0.013}$ . Since we used the experimentally measured form
factors, these results are independent of theoretical models of form factors.

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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: math
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The categories of this paper are: nucl-th