Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of V_ub from semileptonic B decays   The hadronic mass distribution in semileptonic B-meson decays can be used for
extracting the charmless part and thus determining the |V_ub/V_cb| ratio. We
take into account first-order perturbative as well as non-perturbative QCD
corrections. The sensitivity to model assumptions is studied and an estimate of
the remaining uncertainties is performed.

22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ