Apr 9 – 13, 2018
Beurs van Berlage
Europe/Zurich timezone

Measurement of the Higgs Self-Coupling at the FCC-hh Collider

Apr 11, 2018, 2:20 PM
25m
P3 Administratiezaal (1.1)

P3 Administratiezaal

1.1

Board: 3AMS11C

Speaker

Dr Giacomo Ortona (Centre National de la Recherche Scientifique (FR))

Description

An important test of the Standard Model (SM) electroweak symmetry breaking sector is the measurement of the Higgs self-interactions. Sensitivity to the Higgs self-coupling for mH = 125 GeV is evaluated through the measurement of the non-resonant di-Higgs production final states. The considered decay channels are HH→ bb\gamma\gamma, 4b+jet, bb\tau\tau, and bbVV, where V=W and Z. For the non-resonant SM signal in an ideal detector parametrization, a precision of O(3%) on the SM cross-section can be estimated, roughly corresponding to a precision of O(5%) on the Higgs trilinear coupling for the bb\gamma\gamma channel. For the other channels precisions ranging from O(10-40%) can be achieved. The parton-level generation of the signal and the backgrounds is performed by using MadGraph5_aMC@NLO and the Delphes fast parametrisation of the FCC-hh detector is used.

Primary author

Sylvie Braibant-Giacomelli (Universita e INFN, Bologna (IT))

Co-authors

Dr Nicola De Filippis (Politecnico e INFN Bari (IT)) Marianna Testa (INFN e Laboratori Nazionali di Frascati (IT)) Biagio Di Micco (Universita' degli Studi di Roma Tre e Istituto Nazionale di Fisica Nucleare (INFN)) Dr Giacomo Ortona (Centre National de la Recherche Scientifique (FR))

Presentation materials