Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Higher-twist B-meson Distribution Amplitudes in HQET   We present a systematic study of higher-twist distribution amplitudes (DAs)
of the B-meson which give rise to power-suppressed $1/m_B$ contributions to
B-decays in final states with energetic light particles in the framework of QCD
factorization. As the main result, we find that the renormalization group
equations for the three-particle distributions are completely integrable in the
large $N_c$ limit and can be solved exactly. General properties of the
solutions are studied. We propose simple models for higher-twist DAs which
satify all existing constraints and can be used in phenomenological studies.

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The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg