We compute the interference between the resonant process pp to H(to γγ) + 2 jets and the corresponding continuum back- ground at leading order. For the Higgs signal, we include gluon fusion and vector boson fusion production channels, while for the background we consider all tree-level contributions, including pure EW effects (O (α_QED)^4) and QCD contributions (O (α_QED^2 α_s^2)). The main effect of the interference is a shift in the peak position of the resonance, which is small in magnitude but strongly dependent on the Higgs width, potentially allowing for a measurement or constraint of the width itself.
Interference effects in the H --> gammagamma + 2 jets channel at LHC / Francesco Coradeschi; Daniel de Florian; Nerina Fidanza; Javier Mazzitelli. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - ELETTRONICO. - (In corso di stampa), pp. 53-53. (Intervento presentato al convegno QCD 14 - 17th High Energy Physics International Conference in Quantum Chromodynamics).
Interference effects in the H --> gammagamma + 2 jets channel at LHC
CORADESCHI, FRANCESCO;
In corso di stampa
Abstract
We compute the interference between the resonant process pp to H(to γγ) + 2 jets and the corresponding continuum back- ground at leading order. For the Higgs signal, we include gluon fusion and vector boson fusion production channels, while for the background we consider all tree-level contributions, including pure EW effects (O (α_QED)^4) and QCD contributions (O (α_QED^2 α_s^2)). The main effect of the interference is a shift in the peak position of the resonance, which is small in magnitude but strongly dependent on the Higgs width, potentially allowing for a measurement or constraint of the width itself.
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