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Automated event generation for loop-induced processes

Valentin Hirschi
(
- SLAC
)
,
Olivier Mattelaer
(
- Durham U., IPPP
)

Jun 30, 2015

34 pages

Published in:

JHEP 10 (2015) 146

Published: Oct 22, 2015

e-Print:

1507.00020 [hep-ph]

DOI:

10.1007/JHEP10(2015)146

Report number:

IPPP-15-35,
DCPT-15-70,
MCNET-15-14

View in:

reference search189 citations

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Abstract: (Springer)

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. Many of these are computed here for the first time.

Note:

to be published in JHEP

Monte Carlo Simulations
NLO Computations
hadron: scattering
hadron: multiple production
cross section: hadronic
cross section: calculated
Higgs particle: hadroproduction
quantum chromodynamics: perturbation theory: higher-order
parton: scattering
parton: showers

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