https://doi.org/10.1140/epjc/s10052-015-3586-3
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: n.kauer@rhul.ac.uk
Received:
14
February
2015
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
