Abstract

Using the recent results on the contributions of descendants of the leading twist operators to the operator product expansion of two electromagnetic currents we derive explicit expressions for the kinematic finite-t and target mass corrections to the DVCS helicity amplitudes to the 1/Q4 power accuracy. The cancellation of IR divergences for kinematic corrections is demonstrated to all powers in the leading order of perturbation theory. We also argue that target mass corrections in the coherent DVCS from nuclei are small and do not invalidate the factorization theorem.

Details

Title
Next-to-leading-power kinematic corrections to DVCS: a scalar target
Author
Braun, V. M. 1 ; Ji, Yao 2   VIAFID ORCID Logo  ; Manashov, A. N. 3 

1  Universität Regensburg, Institut für Theoretische Physik, Regensburg, Germany (GRID:grid.7727.5) (ISNI:0000 0001 2190 5763) 
2  Technische Universität München, Physik Department T31, James-Franck-Straße 1, Garching, Germany (GRID:grid.6936.a) (ISNI:0000000123222966) 
3  Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany (GRID:grid.9026.d) (ISNI:0000 0001 2287 2617) 
Pages
78
Publication year
2023
Publication date
Jan 2023
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/JHEP01(2023)078
ProQuest document ID
2766280452
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.