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Sep 27 – 30, 2016
DESY Hamburg
Europe/Berlin timezone

Vector boson pair production in gluon fusion including interference effects with off-shell Higgs at the LHC

Sep 28, 2016, 2:20 PM
20m
Seminar room 4b (DESY Hamburg)

Seminar room 4b

DESY Hamburg

Notkestrasse 85, 22607 Hamburg

Speaker

Lorenzo Tancredi (KIT Karlsruhe)

Description

We will report on the recent calculation of the NLO QCD corrections to vector boson pair production in gluon fusion, focussing in particular on its interference with the Higgs signal. In particular, as it was shown by Caola and Melnikov, assessing the impact of the interference on the signal and background cross sections in the high energy tail (i.e. for an off-shell Higgs) is crucial to put stringent constraints on the width of the Higgs. This, in turn, is important to allow precise measurements of the Higgs couplings. Moreover, studying the interference at high invariant masses is very interesting to confirm the EWSB mechanism; the interference is, in fact, expected to be strong and destructive, as the Higgs boson is supposed to unitarize the scattering amplitudes of massive fermions and gauge bosons.

Primary author

Lorenzo Tancredi (KIT Karlsruhe)

Presentation materials