The University of Southampton
University of Southampton Institutional Repository

LHC phenomenology of light pseudoscalars in the NMSSM

LHC phenomenology of light pseudoscalars in the NMSSM
LHC phenomenology of light pseudoscalars in the NMSSM
After the discovery of the 125 GeV Higgs boson, the Next-to-Minimal Supersymmetric Standard Model (NMSSM) has become more interesting as a model for new physics since new tree-level contributions to the Higgs mass makes it easier to accommodate the relatively high measured value, as compared to the MSSM. One very distinctive feature of the NMSSM is the possible existence of a light singlet-like pseudoscalar. As this pseudoscalar may be lighter than the discovered Higgs boson without conflict with data, it may lead to LHC signatures rather different to what is usually searched for in terms of new physics. In these proceedings we will discuss studies concerning the discoverability of such light pseudoscalars. It is demonstrated that heavier scalars decaying to pairs of pseudoscalars or pseudoscalars and Z bosons may lead to discovery in a large part of the parameter space. This is especially important for the non-SM like of the two lightest scalars, as it may have an almost 100% branching ratio for decay into pairs of pseudoscalars. In such a case the discussed channels might be our only means of discovery, also for the scalar.
hep-ph
Bomark, N.-E.
a742c083-7042-4dc1-a746-95bf64299b4a
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, S.
1cc7db7a-fc80-47fe-a59c-e75c1ff7e776
Roszkowski, L.
c2e7e7e7-a3f9-4d23-872b-564921be6677
Bomark, N.-E.
a742c083-7042-4dc1-a746-95bf64299b4a
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, S.
1cc7db7a-fc80-47fe-a59c-e75c1ff7e776
Roszkowski, L.
c2e7e7e7-a3f9-4d23-872b-564921be6677

Bomark, N.-E., Moretti, S., Munir, S. and Roszkowski, L. (2016) LHC phenomenology of light pseudoscalars in the NMSSM. Proceedings of Science, EPS-HEP2015.

Record type: Article

Abstract

After the discovery of the 125 GeV Higgs boson, the Next-to-Minimal Supersymmetric Standard Model (NMSSM) has become more interesting as a model for new physics since new tree-level contributions to the Higgs mass makes it easier to accommodate the relatively high measured value, as compared to the MSSM. One very distinctive feature of the NMSSM is the possible existence of a light singlet-like pseudoscalar. As this pseudoscalar may be lighter than the discovered Higgs boson without conflict with data, it may lead to LHC signatures rather different to what is usually searched for in terms of new physics. In these proceedings we will discuss studies concerning the discoverability of such light pseudoscalars. It is demonstrated that heavier scalars decaying to pairs of pseudoscalars or pseudoscalars and Z bosons may lead to discovery in a large part of the parameter space. This is especially important for the non-SM like of the two lightest scalars, as it may have an almost 100% branching ratio for decay into pairs of pseudoscalars. In such a case the discussed channels might be our only means of discovery, also for the scalar.

Full text not available from this repository.

More information

Published date: 16 March 2016
Additional Information: 6 pages, 4 figures, to appear in proceedings for the EPS-HEP 2015 conference
Keywords: hep-ph
Organisations: Theory Group

Identifiers

Local EPrints ID: 411851
URI: https://eprints.soton.ac.uk/id/eprint/411851
PURE UUID: 916213c0-a88d-49a0-9bdc-6fb6633ef970

Catalogue record

Date deposited: 27 Jun 2017 16:31
Last modified: 13 Mar 2019 19:43

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×