Next-to-leading power threshold effects for resummed prompt photon production

Autor:	van Beekveld, Melissa, Beenakker, Wim, Basu, Rahul, Laenen, Eric, Misra, Anuradha, Motylinski, Patrick
Rok vydání:	2019
Předmět:	High Energy Physics - Phenomenology
Zdroj:	Phys. Rev. D 100, 056009 (2019)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.100.056009
Popis:	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 LHC kinematics. We find that the next-to-leading power effects have a noticeable effect on the photon transverse momentum distribution, typically of order $\mathcal{O}(10\%)$, depending on the method of inclusion. Our results indicate that next-to-leading power terms can reduce the scale dependence of the distribution considerably. Comment: We dedicate this paper to the memory of Rahul Basu
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1905.11771 Zobrazit plný text záznamu View this record from Arxiv