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We study the signals for a "fermiophobic" charged Higgs boson present in an extension of the standard model with an additional Higgs doublet and right handed neutrinos, responsible for generating Dirac-type neutrino masses. We study the…

High Energy Physics - Phenomenology · Physics 2014-04-02 Ushoshi Maitra , Biswarup Mukhopadhyaya , S. Nandi , Santosh Kumar Rai , Ambresh Shivaji

Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during…

High Energy Physics - Experiment · Physics 2014-10-23 CMS Collaboration

The sensitivity of the LHC experiments to the Standard Model Higgs using $H\to\tau\tau\to l^+l^-\sla{p_t}$ associated with one high $P_T$ jet in the mass range $110 <M_H<150 \gev$/c$^2$ is investigated. A cut and Neural Network based event…

High Energy Physics - Phenomenology · Physics 2009-11-10 B. Mellado , W. Quayle , Sau Lan Wu

The discovery of the 125 GeV Higgs boson and the measurement of its branching ratios has initiated the exploration of the electroweak symmetry breaking sector. There have been numerous studies exploring the restrictions these results place…

High Energy Physics - Phenomenology · Physics 2013-08-16 Chien-Yi Chen

A summary of the Higgs boson searches by the ATLAS and CMS collabrations using 1 f b-1 of LHC data is presented, concentrating on the Standard Model Higgs boson. Both experiments have the sensitivity to exclude at 95% CL a Standard Model…

High Energy Physics - Experiment · Physics 2012-01-24 William Murray

The prediction of additional Higgs bosons is one of the key features of physics beyond the Standard Model (SM) that gives rise to an extended Higgs sector. We assess the sensitivity of the Large Hadron Collider (LHC) in the high luminosity…

High Energy Physics - Phenomenology · Physics 2020-10-28 H. Bahl , P. Bechtle , S. Heinemeyer , S. Liebler , T. Stefaniak , G. Weiglein

In this note we propose an overview on the current theoretical and experimental limits on a Higgs singlet extension of the Standard Model. We assume that the Boson which has recently been measured by the LHC experiments is the lightest…

High Energy Physics - Phenomenology · Physics 2014-02-25 Giovanni Marco Pruna , Tania Robens

Motivated by the notorious anomaly in the lepton flavor universality ratios $R_{D^{(*)}}$, we study the sensitivity of the Large Hadron Collider (LHC) to a low-mass charged Higgs boson $H^-$ lighter than $400\,$GeV in a generic two Higgs…

High Energy Physics - Phenomenology · Physics 2022-06-13 Monika Blanke , Syuhei Iguro , Hantian Zhang

A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb-1 to 4.9 fb-1 of pp collisions collected at sqrt(s) = 7 TeV is presented. The…

High Energy Physics - Experiment · Physics 2012-08-27 ATLAS Collaboration

We study constraints on the hidden sector model mediated by an additional SU(2) Higgs doublet from the phenomenology of Higgs bosons. The hidden sector is assumed to contain a hidden U(1) gauge symmetry and the hidden U(1) gauge boson gets…

High Energy Physics - Phenomenology · Physics 2023-05-31 Dong-Won Jung , Kang Young Lee , Chaehyun Yu

We derive the most general sets of viable mass spectra of the exotic Higgs bosons in the Georgi-Machacek model that are consistent with the theoretical constraints of vacuum stability and perturbative unitarity and the experimental…

High Energy Physics - Phenomenology · Physics 2016-02-17 Cheng-Wei Chiang , An-Li Kuo , Toshifumi Yamada

A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an…

High Energy Physics - Experiment · Physics 2012-08-27 CMS Collaboration

We determine the allowed parameter space of the CP-conserving two-Higgs-doublet model (2HDM) of type II with a softly broken Z_2 symmetry. Our analysis includes theoretical constraints from vacuum stability and perturbativity as well as…

High Energy Physics - Phenomenology · Physics 2013-08-21 Otto Eberhardt , Ulrich Nierste , Martin Wiebusch

For a Standard Model Higgs boson with mass between 115 GeV and 150 GeV, the two-photon decay mode is important for discovery at the Large Hadron Collider (LHC). We describe the interactions of a light Higgs boson in a more model-independent…

High Energy Physics - Phenomenology · Physics 2008-11-26 Daniel Phalen , Brooks Thomas , James D. Wells

We discuss the prospects of searching for the neutral Higgs bosons of the triplet model in central exclusive production at the LHC. A detailed Monte Carlo analysis is presented for six benchmark scenarios for the Higgs boson, $H_1^{0}$,…

High Energy Physics - Phenomenology · Physics 2010-01-15 M. Chaichian , P. Hoyer , K. Huitu , V. A. Khoze , A. D. Pilkington

In two Higgs doublet models (2HDM), there exists an interesting possibility, the hidden light Higgs scenario, that the discovered SM-like Higgs boson is the heavier \textit{CP}-even Higgs boson $H^0$ and the lighter \textit{CP}-even $h^0$…

High Energy Physics - Phenomenology · Physics 2016-04-05 Sanghyeon Chang , Sin Kyu Kang , Jong-Phil Lee , Jeonghyeon Song

A plausible explanation of the recent experimental indication of a resonance in the two-photon spectrum at LHC is that it corresponds to the CP-odd Higgs boson. We explore such a possibility in a generic framework of the two Higgs doublet…

High Energy Physics - Phenomenology · Physics 2016-05-04 Damir Becirevic , Enrico Bertuzzo , Olcyr Sumensari , Renata Zukanovich Funchal

We study the implications for Two Higgs Doublet Models of the recent announcement at the LHC giving a tantalizing hint for a Higgs boson of mass 125 GeV decaying into two photons. We require that the experimental result be within a factor…

High Energy Physics - Phenomenology · Physics 2013-05-30 P. M. Ferreira , Rui Santos , Marc Sher , Joao P. Silva

A broad class of models in which electroweak symmetry breaking originates from dynamics in a singlet dark sector, and is transferred to the Standard Model via the Higgs portal, predicts in general strongly suppressed Higgs boson mixing with…

High Energy Physics - Phenomenology · Physics 2013-11-14 Matti Heikinheimo , Antonio Racioppi , Martti Raidal , Christian Spethmann

The study of the Higgs boson properties offers compelling perspectives for testing the effects of physics beyond the Standard Model and has deep implications for the LHC program and future colliders. Accurate determinations of the Higgs…

High Energy Physics - Phenomenology · Physics 2022-09-08 A. Arbey , M. Battaglia , A. Djouadi , F. Mahmoudi , M. Muhlleitner , M. Spira