Diehl, Markus and Gaunt, Jonathan R. and Ploessl, Peter and Schaefer, Andreas (2019) Two-loop splitting in double parton distributions. SCIPOST PHYSICS, 7 (2): 017. ISSN 2542-4653,
Full text not available from this repository. (Request a copy)Abstract
Double parton distributions (DPDs) receive a short-distance contribution from a single parton splitting to yield the two observed partons. We investigate this mechanism at next-to-leading order (NLO) in perturbation theory. Technically, we compute the twoloop matching of both the position and momentum space DPDs onto ordinary PDFs. This also yields the 1 -> 2 splitting functions appearing in the evolution of momentum-space DPDs at NLO. We give results for the unpolarised, colour-singlet DPDs in all partonic channels. These quantities are required for calculations of double parton scattering at full NLO. We discuss various kinematic limits of our results, and we verify that the 1 -> 2 splitting functions are consistent with the number and momentum sum rules for DPDs. Copyright M. Diehl et al. This work is licensed under the Creative Commons Attribution 4.0 International License. Published by the SciPost Foundation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LEADING ORDER EVOLUTION; LEPTON-NUCLEON SCATTERING; DEEP INELASTIC-SCATTERING; FREE GAUGE-THEORIES; RESOLVING QCD JETS; DIFFERENTIAL-EQUATIONS; PAIR ANNIHILATION; PP COLLISIONS; (P)OVER-BAR-P COLLISIONS; 2ND-ORDER CONTRIBUTIONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Apr 2020 05:50 |
| Last Modified: | 07 Apr 2020 05:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26491 |
Actions (login required)
 |
View Item |
