Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\Lambda_b\to\Sigma_c^{(*)}\pi l{\bar\nu}$ in the heavy quark, chiral,
  and large $N_c$ limits   The decay of $\Lambda_b\to\Sigma_c^{(*)}\pi l{\bar\nu}$ processes are
calculated in the framework of heavy baryon chiral perturbation theory with
help of the $1/N_c$ expansion. The decay rate distributions over $v\cdot
v^{\prime}$ where $v$ and $v^{\prime}$ are the 4-vector velocities of
$\Lambda_b$ and $\Sigma_c^{(*)}$ respectively, and over the pion and lepton
energies are given. The decay branching ratios amount to about $1.21(0.971)%$
for $\Lambda_b\to\Sigma_c\pi l{\bar\nu}$ and $0.798(0.640)%$ for
$\Lambda_b\to\Sigma_c^*\pi l{\bar\nu}$ by using the baryonic Isgur-Wise
function predicted by QCD sum rule (large $N_c$ QCD).

20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin