Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An effective field theory approach to quarkonium at small transverse
  momentum   In this work we apply effective field theory (EFT) to observables in
quarkonium production and decay that are sensitive to soft gluon radiation, in
particular measurements that are sensitive to small transverse momentum. Within
the EFT framework we study $\chi_Q$ decay to light quarks followed by the
fragmentation of those quarks to light hadrons. We derive a factorization
theorem that involves transverse momentum distribution (TMD) fragmentation
functions and new quarkonium TMD shape functions. We derive renormalization
group equations, both in rapidity and virtuality, which are used to evolve the
different terms in the factorization theorem to resum large logarithms. This
theoretical framework will provide a systematic treatment of quarkonium
production and decay processes in TMD sensitive measurements.

25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga