Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $B$-meson light-cone distribution amplitude from the Euclidean quantity   A new method for the model-independent determination of the light-cone
distribution amplitude (LCDA) of the $B$-meson in heavy quark effective theory
(HQET) is proposed by combining the large momentum effective theory (LaMET) and
the numerical simulation technique on the Euclidean lattice. We demonstrate the
autonomous scale dependence of the non-local quasi-HQET operator with the aid
of the auxiliary field approach, and further determine the perturbative
matching coefficient entering the hard-collinear factorization formula for the
$B$-meson quasi-distribution amplitude at the one-loop accuracy. These results
will be crucial to explore the partonic structure of heavy-quark hadrons in the
static limit and to improve the theory description of exclusive $B$-meson decay
amplitudes based upon perturbative QCD factorization theorems.

27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom