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We investigate the discovery prospects for NMSSM Higgs bosons during the 13~TeV run of the LHC. While one of the neutral Higgs bosons is demanded to have a mass around 125~GeV and Standard Model (SM)-like properties, there can be…

High Energy Physics - Phenomenology · Physics 2014-11-19 S. F. King , M. Muhlleitner , R. Nevzorov , K. Walz

Higgs couplings can be affected by physics beyond the Standard Model. We study modifications through interactions with a hidden sector and in specific composite Higgs models accessible at the LHC. Both scenarios give rise to congruent…

High Energy Physics - Phenomenology · Physics 2011-03-28 Sebastian Bock , Remi Lafaye , Tilman Plehn , Michael Rauch , Dirk Zerwas , Peter M. Zerwas

We predict an unconventional background free signal of the Higgs boson in $R$-parity violating nonminimal supersymmetric models at the Large Hadron Collider (LHC). The signal comprises dilepton plus four hadronic jets and two large…

High Energy Physics - Phenomenology · Physics 2011-12-30 Priyotosh Bandyopadhyay , Pradipta Ghosh , Sourov Roy

Recent measurements by the ATLAS and CMS experiments have excluded the Standard Model Higgs boson in the high mass region, even if it is produced with a significantly smaller cross section than expected. The bounds are dominated by the…

High Energy Physics - Phenomenology · Physics 2014-05-30 Christoph Englert , Dorival Goncalves , Michael Spannowsky , John Terning

The prospects of detecting neutral Higgs bosons in the minimal supersymmetric model via their decays into muon pairs at the LHC are investigated. The CMS detector performance is adopted for a realistic study of observability. It is found…

High Energy Physics - Phenomenology · Physics 2009-10-28 Chung Kao , Nikita Stepanov

The 2HDM+S is a singlet extension of the Two-Higgs-Doublet Model (2HDM), which offers rich collider phenomenology. In this paper, we parametrize the 2HDM+S with the Higgs masses and mixing angles, which provide a model-independent framework…

High Energy Physics - Phenomenology · Physics 2026-05-04 Cheng Li , Juxiang Li , Shufang Su , Wei Su

We construct a minimal calculable model of a light dilaton based on the scenario where only top and Higgs sectors are involved in a quasiconformal dynamics. The model consistently accommodates the electroweak precision tests even when the…

High Energy Physics - Phenomenology · Physics 2013-05-29 Tomohiro Abe , Ryuichiro Kitano , Yasufumi Konishi , Kin-ya Oda , Joe Sato , Shohei Sugiyama

In 2001, a supersymmetric model was proposed to relate the axion scale to that of neutrino mass seesaw. Whereas this scenario is realistic, the particles associated with this mechanism are either too heavy or too weakly coupled for them to…

High Energy Physics - Phenomenology · Physics 2015-06-03 Ernest Ma

Using a peculiar version of the SU(3)L x U(1)N electroweak model, we investigate the production of doubly charged Higgs boson at the Large Hadron Collider. Our results include branching ratio calculations for the doubly charged Higgs and…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. E. Cieza Montalvo , Nelson V. Cortez , J. Sa Borges , Mauro D. Tonasse

A linear e+e- collider (LC) could go into operation in the next decade. The LHC is currently exploring the Higgs sector of the SM, various supersymmetric extensions and other models. The LC is necessary to complete the profile of a Higgs…

High Energy Physics - Phenomenology · Physics 2015-03-11 S. Heinemeyer

A data-driven method for simultaneously extracting a potential Higgs to ZZ to 4e, 4mu, 2e2mu signal and its dominant backgrounds, is presented. The method relies on a combined fit of the 2-lepton, Z*, and 4-lepton invariant masses. The fit…

High Energy Physics - Experiment · Physics 2011-09-26 Christos Anastopoulos , Nicolas Kerschen , Stathes Paganis

In the Next-to-Minimal Supersymemtric Standard Model (NMSSM), one of the neutral Higgs scalars (CP-even or CP-odd) may be lighter than half of the SM-like Higgs boson. In this case, the SM-like Higgs boson h can decay into such a light…

High Energy Physics - Phenomenology · Physics 2013-11-27 Junjie Cao , Fangfang Ding , Chengcheng Han , Jin Min Yang , Jingya Zhu

We discuss prospects for discovering a charged Higgs boson in the CP-violating type-II two-Higgs-doublet Model. In the light of recent LHC data, we focus on the parameter space that survives experimental as well as the theoretical…

High Energy Physics - Phenomenology · Physics 2013-06-28 Lorenzo Basso , Anna Lipniacka , Farvah Mahmoudi , Stefano Moretti , Per Osland , Giovanni Marco Pruna , Mahdi Purmohammadi

A recently proposed SO(5)xU(1) gauge-Higgs unification model in the Randall-Sundrum warped space contains a very interesting dark matter candidate, the Higgs boson. As a part of the fifth component of a five-dimensional gauge field, the…

High Energy Physics - Phenomenology · Physics 2014-11-20 Kingman Cheung , Jeonghyeon Song

We present a detailed study of the Higgs sector within an extension of the Minimal Supersymmetric Standard Model that includes one Complex Higgs Triplet (MSSM+1CHT). The model spectrum includes three singly charged Higgs bosons as well as…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. L. Diaz-Cruz , J. Hernandez-Sanchez , S. Moretti , A. Rosado

We study the possibility of discovering neutral scalar Higgs bosons in the $U(1)'$-extended supersymmetric standard model (USSM) at the CERN Large Hadron Collider (LHC), by examining their productions via the exotic quark loop in the gluon…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. W. Ham , Taeil Hur , P. Ko , S. K. OH

The discovery made at the Large Hadron Collider (LHC) has revealed that the spontaneous symmetry breaking mechanism is realised in a gauge theory such as the Standard Model (SM) by at least one Higgs doublet. However, the possible existence…

High Energy Physics - Phenomenology · Physics 2018-09-05 Antonio Costantini

We discuss a scenario consisting of an effective 4D theory containing fundamental and composite fields. The strong dynamics sector responsible for the compositeness is assumed to be of extra dimensional origin. In the 4D effective theory…

High Energy Physics - Phenomenology · Physics 2008-11-26 Alfredo Aranda , J. L. Diaz-Cruz , J. Hernandez-Sanchez , R. Noriega-Papaqui

We reexamine the prospects for searching for a neutral Higgs boson in the intermediate-mass range and physics beyond the standard model, using the proton- and ion-beam facilities of the LHC to study coherent two-photon processes.…

High Energy Physics - Phenomenology · Physics 2007-05-23 Elena Papageorgiu

The discovery of the Standard Model (SM) or supersymmetric (SUSY) Higgs bosons belongs to the main endeavors of the Large Hadron Collider (LHC). In this article the status of the signal and background calculations for Higgs boson production…

High Energy Physics - Phenomenology · Physics 2009-02-02 M. Margarete Muhlleitner