Initial state radiation in the Herwig 7 angular-ordered parton shower

Journal of High Energy Physics

Gavin Bewick¹  Silvia Ferrario Ravasio²  Peter Richardson³  Michael H. Seymour⁴ 

[1] Institute for Particle Physics Phenomenology, Durham University, South Road, DH1 3LE, Durham, UK;Institute for Particle Physics Phenomenology, Durham University, South Road, DH1 3LE, Durham, UK;Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Parks Road, OX1 3PU, Oxford, UK;Institute for Particle Physics Phenomenology, Durham University, South Road, DH1 3LE, Durham, UK;Theoretical Physics Department, CERN, Esplanade des Particules, 1217, Meyrin, Switzerland;Lancaster-Manchester-Sheffield Consortium for Fundamental Physics, Department of Physics and Astronomy, University of Manchester, Oxford Road, M13 9PL, Manchester, UK;

关键词: QCD Phenomenology;   

DOI  :  10.1007/JHEP01(2022)026

来源: Springer

【 摘 要 】

We study the simulation of initial-state radiation in angular-ordered parton showers in order to investigate how different interpretations of the ordering variable affect the logarithmic accuracy of such showers. This also enables us to implement a recoil scheme which is consistent between final-state and initial-state radiation. We present optimal values of the strong coupling and intrinsic transverse momentum to be used in each version of the parton shower, tuned using Z0-boson production at the LHC at 7 TeV. With these tuned showers, we perform a phenomenological study of the Drell-Yan process at several centre-of-mass energies.

【 授权许可】

CC BY