Regular Article - Theoretical Physics
Heavy Higgs signal–background interference in in the Standard Model plus real singlet
Department of Physics, Royal Holloway, University of London, Egham Hill, Egham, TW20 0EX, UK
* e-mail: firstname.lastname@example.org
Accepted: 30 July 2015
Published online: 18 August 2015
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 lepton processes at the Large Hadron Collider. Interference effects can range from to 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 cut mitigates interference effects to or less. A public program that allows one to simulate the full interference is presented.
© The Author(s), 2015