Weak gauge boson radiation in parton showers

• Published in: The journal of high energy physics Vol. 2014; no. 4; pp. 1 - 38
• Main Authors: Christiansen, Jesper R., Sjöstrand, Torbjörn
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-04-2014; Springer Nature B.V
• Subjects: Bosons; Classical and Quantum Gravitation; Elementary Particles; Evolution; Fysik; Gages; Gauges; Hadronic Colliders; Hadrons; High energy physics; Jets; Monte Carlo Simulations; Natural Sciences; Naturvetenskap; Physical Sciences; Physics; Physics and Astronomy; Quantum chromodynamics; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Relativity Theory; Showers; String Theory; Subatomic Physics; Subatomär fysik; Monte Carlo Simulations; Hadronic Colliders
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP04(2014)115

A
bstract
The emission of W and Z gauge bosons off quarks is included in a traditional QCD + QED shower. The unitarity of the shower algorithm links the real radiation of the weak gauge bosons to the negative weak virtual corrections. The shower evolution process leads to a competition between QCD, QED and weak radiation, and allows for W and Z boson production inside jets. Various effects on LHC physics are studied, both at low and high transverse momenta, and effects at higher-energy hadron colliders are outlined.