Heavy Higgs signal-background interference in gg --> VV in the Standard Model plus real singlet. / Kauer, Nikolas; O'Brien, Claire.

In: European Physical Journal C: Particles and Fields, Vol. 75, No. 374, 08.2015, p. 1-11.

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Abstract

For the Standard Model extended with a real scalar singlet field, the modification of the heavy Higgs signal due to interference with the continuum background and the off-shell light Higgs contribution is studied for gg→ZZ,WW→4 lepton processes at the Large Hadron Collider. Interference effects can range from O(10%) to O(1) effects for integrated cross sections. Despite a strong cancellation between the heavy Higgs–continuum and the heavy Higgs–light Higgs interference, the full interference is clearly non-negligible and modifies the heavy Higgs line shape. A |MVV−Mh2|<Γh2 cut mitigates interference effects to O(10%) or less. A public program that allows one to simulate the full interference is presented.
Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalEuropean Physical Journal C: Particles and Fields
Volume75
Issue number374
Early online date18 Aug 2015
DOIs
Publication statusPublished - Aug 2015
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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