Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transition distribution amplitudes and hard exclusive reactions with
  baryon number transfer   Baryon-to-meson and baryon-to-photon transition distribution amplitudes
(TDAs) arise in the collinear factorized description of a class of hard
exclusive reactions characterized by the exchange of a non-zero baryon number
in the cross channel. These TDAs extend the concepts of generalized parton
distributions (GPDs) and baryon distribution amplitudes (DAs). In this review,
we discuss the general properties and physical interpretation of
baryon-to-meson and baryon-to-photon TDAs. We argue that these non-perturbative
objects are a convenient complementary tool to explore the structure of baryons
at the partonic level. We present an overview of hard exclusive reactions
admitting a description in terms of TDAs. We discuss the first signals from
hard exclusive backward meson electroproduction at JLab with the 6 GeV electron
beam and explore further experimental opportunities to access TDAs at JLab@12
GeV, PANDA, J-PARC and EIC.

7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat