https://doi.org/10.1140/epjc/s10052-016-4435-8
Regular Article - Theoretical Physics
Phenomenological signatures of additional scalar bosons at the LHC
1
School of Physics, University of the Witwatersrand, Johannesburg, Wits, 2050, South Africa
2
Regional Centre for Accelerator-Based Particle Physics, Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad, 211 019, India
3
National Institute for Theoretical Physics, School of Physics and Mandelstam Institute for Theoretical Physics, University of the Witwatersrand, Johannesburg, Wits, 2050, South Africa
4
Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden
* e-mail: stef.von.b@cern.ch
Received:
11
August
2016
Accepted:
10
October
2016
Published online:
26
October
2016
We investigate the search prospects for new scalars beyond the standard model at the large hadron collider (LHC). In these studies two real scalars S and 
have been introduced in a two Higgs-doublet model (2HDM), where S is a portal to dark matter (DM) through its interaction with , a DM candidate and a possible source of missing transverse energy (
). Previous studies focussed on a heavy scalar H decay mode 
, which was studied using an effective theory in order to explain a distortion in the Higgs boson (h) transverse momentum spectrum (von Buddenbrock et al. in arXiv:1506.00612 [hep-ph], 2015). In this work, the effective decay is understood more deeply by including a mediator S, and the focus is changed to 
with 
. Phenomenological signatures of all the new scalars in the proposed 2HDM are discussed in the energy regime of the LHC, and their mass bounds have been set accordingly. Additionally, we have performed several analyses with final states including leptons and , with 
, 
and 
channels, in order to understand the impact these scalars have on current searches.
© The Author(s), 2016
