Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constant terms in threshold resummation and the quark form factor   We verify to order alpha_s^4 two previously conjectured relations, valid in
four dimensions, between constant terms in threshold resummation (for Deep
Inelastic Scattering and the Drell-Yan process) and the second logarithmic
derivative of the massless quark form factor. The same relations are checked to
all orders in the large beta_0 limit; as a byproduct a dispersive
representation of the form factor is obtained. These relations allow to compute
in a symmetrical way the three-loop resummation coefficients B_3 and D_3 in
terms of the three-loop contributions to the virtual diagonal splitting
function and to the quark form factor, confirming results obtained in the
literature.

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The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ