https://doi.org/10.1140/epjc/s10052-016-3965-4
Regular Article - Theoretical Physics
Interference contributions to gluon initiated heavy Higgs production in the two-Higgs-doublet model
1
DESY, Notkestraße 85, 22607, Hamburg, Germany
2
Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
* e-mail: stefan.liebler@desy.de
Received:
5
January
2016
Accepted:
21
February
2016
Published online:
3
March
2016
We discuss the production of a heavy neutral Higgs boson of a 
-conserving two-Higgs-doublet model in gluon fusion and its decay into a four-fermion final state, 
. We investigate the interference contributions to invariant mass distributions of the four-fermion final state and other relevant kinematical observables. The relative importance of the different contributions is quantified for the process in the on-shell approximation, 
. We show that interferences of the heavy Higgs with the light Higgs boson and background contributions are essential for a correct description of the differential cross section. Even though they contribute below 
to those heavy Higgs signal cross sections, to which the experiments at the Large Hadron Collider were sensitive in its first run, we find that they are sizable in certain regions of the parameter space that are relevant for future heavy Higgs boson searches. In fact, the interference contributions can significantly enhance the experimental sensitivity to the heavy Higgs boson.
© The Author(s), 2016
