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Title: Automated event generation for loop-induced processes

Abstract

We present the first fully automated implementation of cross-section computation and event generation for loop-induced processes. This work is integrated in the MadGraph5_aMC@NLO framework. We describe the optimisations implemented at the level of the matrix element evaluation, phase space integration and event generation allowing for the simulation of large multiplicity loop-induced processes. Along with some selected differential observables, we illustrate our results with a table showing inclusive cross-sections for all loop-induced hadronic scattering processes with up to three final states in the SM as well as for some relevant 2 → 4 processes. Furthermore, many of these are computed here for the first time.

Authors:
 [1];  [2]
+ Show Author Affiliations
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Durham Univ. Durham (United Kingdom)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1238352
Report Number(s):
SLAC-PUB-16369
Journal ID: ISSN 1029-8479; PII: 2367
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Monte Carlo Simulations; NLO Computations

Citation Formats

Hirschi, Valentin, and Mattelaer, Olivier. Automated event generation for loop-induced processes. United States: N. p., 2015. Web. doi:10.1007/JHEP10(2015)146.
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Hirschi, Valentin, & Mattelaer, Olivier. Automated event generation for loop-induced processes. United States. doi:10.1007/JHEP10(2015)146.
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Hirschi, Valentin, and Mattelaer, Olivier. Thu . "Automated event generation for loop-induced processes". United States. doi:10.1007/JHEP10(2015)146. https://www.osti.gov/servlets/purl/1238352.
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@article{osti_1238352,
title = {Automated event generation for loop-induced processes},
author = {Hirschi, Valentin and Mattelaer, Olivier},
abstractNote = {We present the first fully automated implementation of cross-section computation and event generation for loop-induced processes. This work is integrated in the MadGraph5_aMC@NLO framework. We describe the optimisations implemented at the level of the matrix element evaluation, phase space integration and event generation allowing for the simulation of large multiplicity loop-induced processes. Along with some selected differential observables, we illustrate our results with a table showing inclusive cross-sections for all loop-induced hadronic scattering processes with up to three final states in the SM as well as for some relevant 2 → 4 processes. Furthermore, many of these are computed here for the first time.},
doi = {10.1007/JHEP10(2015)146},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2015,
place = {United States},
year = {2015},
month = {10}
}
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DOI:  10.1007/JHEP10(2015)146
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