Abstract
We assess and compare different methods for including leading threshold logarithms at next-to-leading power in prompt photon production at hadron colliders, for both the direct and parton fragmentation mechanisms. We do this in addition to next-to-leading logarithmic threshold and joint resummation at leading power. We study the size of these effects and their scale variations for Large Hadron Collider kinematics. We find that the next-to-leading power effects have a noticeable effect on the photon transverse momentum distribution, typically of order , depending on the method of inclusion. Our results indicate that next-to-leading power terms can reduce the scale dependence of the distribution considerably.
3 More- Received 6 June 2019
DOI:https://doi.org/10.1103/PhysRevD.100.056009
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society