• Open Access

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

Melissa van Beekveld, Wim Beenakker, Rahul Basu, Eric Laenen, Anuradha Misra, and Patrick Motylinski
Phys. Rev. D 100, 056009 – Published 13 September 2019

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 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.

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  • 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

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Melissa van Beekveld1,2, Wim Beenakker1,3, Rahul Basu4,*, Eric Laenen2,5, Anuradha Misra6, and Patrick Motylinski7

  • 1Theoretical High Energy Physics, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
  • 2Nikhef, Science Park 105, 1098 XG Amsterdam, The Netherlands
  • 3Institute of Physics, University of Amsterdam, Science Park 904, 1018 XE Amsterdam, The Netherlands
  • 4The Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai 600 113, India
  • 5Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands
  • 6Department of Physics, University of Mumbai, Santacruz(E) Mumbai, 400098, India
  • 7Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg i.Br., Germany

  • *Deceased.

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Issue

Vol. 100, Iss. 5 — 1 September 2019

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