Roman Pasechnik
Senior lecturer
Enhancement of associated (HW -/+)-W-+/- production in the NMSSM
Author
Summary, in English
We study the associated production of a charged Higgs and a W boson in high-energy pp collisions at the LHC. This is an interesting process for charged Higgs discovery, or exclusion, since the production cross section could depend strongly on the model, offering potential discriminating power between supersymmetric extensions of the standard model with minimal or extended Higgs sectors. We compute the cross section for this process in the next-to-minimal supersymmetric standard model (NMSSM), at the tree level for quark-quark scattering, and at one-loop level for gluon-gluon scattering. The most important corrections beyond leading order are taken into account using an improved Born approximation. We find that the pp -> (HW -/+)-W-+/- cross section can be resonantly enhanced by up to an order of magnitude over its MSSM value (both for root s = 7 TeV and 14 TeV) through the contributions of heavy, neutral, singlet-dominated Higgs bosons appearing in the s-channel. Since such Higgs mass configurations are normally not possible in the MSSM, the observation of associated (HW -/+)-W-+/- production at the LHC could provide a striking, although indirect, signature of a more complicated Higgs sector.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2012
Language
English
Publication/Series
Physical Review D (Particles, Fields, Gravitation and Cosmology)
Volume
85
Issue
7
Full text
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 1550-2368