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  • Letter
  • Open Access

High energy leptonic collisions and electroweak parton distribution functions

Tao Han*, Yang Ma†, and Keping Xie‡

  • PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, Pennsylvania 15260, USA

  • *than@pitt.edu
  • †mayangluon@pitt.edu
  • ‡xiekeping@pitt.edu
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Phys. Rev. D 103, L031301 – Published 18 February, 2021

DOI: https://doi.org/10.1103/PhysRevD.103.L031301

Abstract

In high-energy leptonic collisions well above the electroweak scale, the collinear splitting mechanism of the electroweak gauge bosons becomes the dominant phenomena via the initial state radiation and the final state showering. We point out that at future high-energy lepton colliders, such as a multi-TeV muon collider, the electroweak parton distribution functions (EW PDFs) should be adopted as the proper description for partonic collisions of the initial states. The leptons and electroweak gauge bosons are the EW partons, that evolve according to the unbroken Standard Model (SM) gauge group and that effectively resum potentially large collinear logarithms. We present a formalism for the EW PDFs at the leading-log (LL) accuracy. We calculate semi-inclusive cross sections for some important SM processes at a future multi-TeV muon collider. We conclude that it is appropriate to adopt the EW PDF formalism for future high-energy lepton colliders.

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Outline

Information

Phys. Rev. D 103, L031301– Published 18 February, 2021
  • Received 28 August 2020
  • Revised 16 November 2020
  • Accepted 26 January 2021
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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.

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