Speaker
Dr
Stefan Hesselbach
(University of Southampton)
Description
We investigate the viability of observing charged Higgs bosons (H^+)
produced in association with W bosons at the CERN Large Hadron Collider,
using the leptonic decay H^+ -> tau^+ nu_tau and hadronic W-decay,
within different scenarios of the Minimal Supersymmetric Standard Model
(MSSM) with both real and complex parameters. Performing a parton
level study we show how the irreducible Standard Model background
from W + 2 jets can be controlled by applying appropriate cuts
and find that the size of a possible signal depends on the cuts needed to
suppress QCD backgrounds and misidentifications. In the standard
maximal mixing scenario of the MSSM we find a viable signal
for large tan beta and intermediate H^+ masses (~ m_t) when using
optimistic cuts whereas for more pessimistic ones we only find a
viable signal for very large tan beta (> 50). We have also
investigated a special class of MSSM scenarios with large
mass-splittings among the heavy Higgs bosons where the
cross-section can be resonantly enhanced by factors up to one
hundred, with a strong dependence on the CP-violating phases.
Even so we find that the signal after cuts remains small except for
small masses (<= m_t) with optimistic cuts. Finally, in all the scenarios
we have investigated we have only found small CP-asymmetries.
Authors
Mr
David Eriksson
(Uppsala University)
Dr
Johan Rathsman
(Uppsala University)
Dr
Stefan Hesselbach
(University of Southampton)
