Higgs bosons in supersymmetric U(1)' models with CP violation

Download

index.pdf

Date

2013-04-08

Author

Frank, Mariana
Selbuz, Levent
SOLMAZ, LEVENT
Turan, İsmail

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

170
views

41
downloads

We study the Higgs sector of the U(1)'-extended minimal supersymmetric standard model with CP violation. This is an extension of the minimal supersymmetric standard model Higgs sector by one singlet field, introduced to generate the mu term dynamically. We are particularly interested in nonstandard decays of Higgs particles, especially of the lightest one, in the presence of CP violating phases for mu(eff) and the soft parameters. We present analytical expressions for neutral and charged Higgs boson masses at tree and one-loop levels, including contributions from top and bottom scalar quark sectors. We then study the production and decay channels of the neutral Higgs for a set of benchmark points consistent with low energy data and relic density constraints. Numerical simulations show that a Higgs boson lighter than 2m(W) can decay in a quite distinctive manner, including invisible modes into two neutralinos (h -> (chi) over tilde (0)(chi) over tilde (0)) up to similar to 50% of the time, when kinematically allowed. The branching ratio into h -> (b) over barb, the dominant decay in the standard model, is reduced in some U(1)' models and enhanced in others, while the branching ratios for the decays h -> tau(+)tau(-), h -> WW*, and h -> ZZ* -> 4l are always reduced with respect to their standard model expectations. This possibility has important implications for testing the U(1)' model both at the LHC and later at the ILC. DOI: 10.1103/PhysRevD.87.075007

Subject Keywords

Nuclear and High Energy Physics

URI

https://hdl.handle.net/11511/40583

Journal

PHYSICAL REVIEW D

DOI

https://doi.org/10.1103/physrevd.87.075007

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Collider effects of unparticle interactions in multiphoton signals Alıyev, Tahmasıb; Turan, İsmail (American Physical Society (APS), 2009-12-01) A new model of physics, with a hidden conformal sector which manifests itself as an unparticle coupling to standard model particles effectively through higher dimensional operators, predicts strong collider signals due to unparticle self-interactions. We perform a complete analysis of the most spectacular of these signals at the hadron collider, pp(p)->gamma gamma gamma gamma and gamma gamma gg. These processes can go through the three-point unparticle self-interactions as well as through some s and t chann...
Cross section measurement of t-channel single top quark production in pp collisions at root s=13 TeV Sirunyan, A. M.; et. al. (Elsevier BV, 2017-09-01) The cross section for the production of single top quarks in the t channel is measured in proton- proton collisions at 13TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.2fb(-1). The event selection requires one muon and two jets where one of the jets is identified as originating from a bottom quark. Several kinematic variables are then combined into a multivariate discriminator to distinguish signal from background events. A fit to the distribution of the ...
Sneutrino dark matter: Symmetry protection and cosmic ray anomalies Demir, Durmus A.; Everett, Lisa L.; Frank, Mariana; Selbuz, Levent; Turan, İsmail (American Physical Society (APS), 2010-02-01) We present an R-parity conserving model of sneutrino dark matter within a Higgsphilic U(1)' extension of the minimal supersymmetric standard model. In this theory, the mu parameter and light Dirac neutrino masses are generated naturally upon the breaking of the U(1)' gauge symmetry. One of the right-handed sneutrinos is the lightest supersymmetric particle. The leptonic and hadronic decays of another sneutrino, taken to be the next-to-lightest superpartner, allow for a natural fit to the recent results repo...
Scalar-meson production in nucleon-nucleon collisions near threshold Rekalo, MP; Tomasi-Gustafsson, E (Springer Science and Business Media LLC, 2003-12-01) We establish the model-independent spin structure of the matrix elements for the near-threshold scalar-meson production in pp and np collisions, when the final particles are emitted in S-state. Polarization phenomena are derived in a general form. The properties of the t-channel dynamics, which is based on different meson exchanges, are studied in terms of the s-channel parametrization of the matrix element. The predictions of a model, based on pi + sigma exchanges are also presented.
Noncommutative nonlinear sigma models and integrability Kürkcüoğlu, Seçkin (American Physical Society (APS), 2008-09-01) We first review the result that the noncommutative principal chiral model has an infinite tower of conserved currents and discuss the special case of the noncommutative CP1 model in some detail. Next, we focus our attention to a submodel of the CP1 model in the noncommutative spacetime A(theta)(R2+1). By extending a generalized zero-curvature representation to A(theta)(R2+1) we discuss its integrability and construct its infinitely many conserved currents. A supersymmetric principal chiral model with and wi...

Citation Formats

M. Frank, L. Selbuz, L. SOLMAZ, and İ. Turan, “Higgs bosons in supersymmetric U(1)′ models with CP violation,” PHYSICAL REVIEW D, pp. 0–0, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40583.