Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vertex renormalization and hard scattering symmetry breaking corrections
  to $B$ to axial vector meson form factors at large recoil   The symmetries arise due to heavy quark and large energy limit help us to
reduce the number of independent form factors in the heavy-to-light $B$-meson
decays. It is expected that these symmetry relations are not exact and are
broken by the perturbative effects, namely, the vertex corrections and the
hard-spectator scatterings. The former are included in the form factors via
vertex renormalization whereas the later are calculated through light-cone
distribution amplitudes. We first calculate these symmetry breaking corrections
to the form factors involved in semileptonic $B$-meson to an axial-vector
$(K_{1})$-meson decay. Later, by using these form factors we see their effect
on the physical observables such as the zero-position of the forward-backward
$(\mathcal{A}_{FB})$ asymmetry and the longitudinal lepton polarization ($P_L$)
asymmetry in $B\rightarrow K_1(1270) \mu^+\mu^-$ decay. We find that as a
result of these corrections to the form factors, the zero-position of the
forward-backward asymmetry is shifted by $10\%$ from its SM value while the
effects on $P_L$ are rather insignificant.

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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas