Comparison of $H\to \ell \bar{\ell }\gamma$ and $H\to \gamma Z,Z\to \ell \bar{\ell }$ including the ATLAS cuts

Abstract

A precise comparison is made between the Dalitz decay $H\to \ell \bar{\ell }\gamma$ and the two body decay $H\to \gamma Z,Z\to \ell \bar{\ell }$ for electrons and for muons including experimental cuts appropriate for the ATLAS detector. The widths for these two processes differ by 8% for electrons and 3% for muons. Given that there remain QCD radiative corrections of this order that are not included, this suggests that the isolation of the Dalitz decay will be challenging.

4 pages, 3 figures, 2 tables

References in corpus (4)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Higgs Boson Production and Decay: Dalitz Sector
• Calculation of the decay ${\bm H\bm\to\bm e\bar{\bm e}\bm\ga}$

Cited by in corpus (8)

• Search for Higgs boson decays to a photon and a Z boson in pp collisions at sqrt(s)=7 and 8 TeV with the ATLAS detector
• Next-to-Leading Order QCD Corrections to the Decay Width $H\to Z\gamma$
• Angular distribution and forward-backward asymmetry of the Higgs-boson decay to photon and lepton pair
• Higgs decays to $\gamma$ and invisible particles in the standard model
• Fiducial cross sections for the lepton-pair-plus-photon decay mode in Higgs production up to NNLO QCD
• Dalitz Decay $H\to f\bar{f}\gamma$ as a Background for $H\to \gamma \gamma$
• Exclusive rare Higgs decays into lepton pair and light mesons
• General one-loop formulas for $H\to f\bar{f}\gamma$ and its applications