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A search for pair-produced charged Higgs bosons was performed in the data collected by the DELPHI detector at LEP II at centre-of-mass energies from 189 GeV to 209 GeV. Five different final states, tau+ nu_tau tau- anti-nu_tau, c sbar cbar…

High Energy Physics - Experiment · Physics 2008-11-26 The DELPHI Collaboration , J. Abdallah

The properties of 125 GeV new particle, which was discovered in 2012 at the Large Hadron Collider (LHC), are found to be consistent with those of the Higgs boson in the standard model (SM). Hereafter the new particle is dubbed as SM-like…

High Energy Physics - Phenomenology · Physics 2014-05-12 Xiao-ping Wang , Shou-hua Zhu

The ATLAS and CMS experiments have recently discovered a new 125 GeV scalar boson. We show that the properties of this scalar, including the enhancement of its diphoton decay rate, can be explained in a model with an isospin symmetric Higgs…

High Energy Physics - Phenomenology · Physics 2012-11-21 Michio Hashimoto , V. A. Miransky

The analysis of the Higgs search results at LEP showed that a part of the MSSM parameter space with non-zero complex phases could not be excluded, where the lightest neutral Higgs boson, h_1, has a mass of only about 45 GeV and the second…

High Energy Physics - Phenomenology · Physics 2008-01-17 K. E. Williams , G. Weiglein

We study the scope of the Large Hadron Collider in accessing a neutral Higgs boson of the $B-L$ Supersymmetric Standard Model. After assessing the surviving parameter space configurations following the Run 1 data taking, we investigate the…

High Energy Physics - Phenomenology · Physics 2016-07-20 A. Hammad , S. Khalil , S. Moretti

A search for pair-produced charged Higgs bosons is performed with the L3 detector at LEP using data collected at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.4 pb^-1. Higgs decays into a charm and a…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

We review recent progress in techniques for searching for the Standard Model light `Intermediate Mass' Higgs Boson ($80 \GeV \lsim M_H \lsim 140\GeV$). We pay particular attention to associated production at the SSC and LHC where we search…

High Energy Physics - Phenomenology · Physics 2007-05-23 David J. Summers

During the run in the year 2000, with data collected at collision energies up to 209 GeV, the LEP experiments have possibly unearthed the first evidence of a Higgs boson signal at mh=115 GeV/c2. The preliminary combined results prepared…

High Energy Physics - Experiment · Physics 2007-05-23 Pedro Teixeira-Dias

In extended Higgs models, the Higgs boson may decay into a pair of light CP-odd scalars, with distinctive collider signatures. We study the ensuing Higgs signals at the upgraded Tevatron, considering the subsequent decays of the scalars…

High Energy Physics - Phenomenology · Physics 2008-11-26 Bogdan A. Dobrescu , Greg Landsberg , Konstantin T. Matchev

We demonstrate that an invisibly decaying Higgs boson with Standard Model coupling strength to top--anti-top can be detected at the LHC for masses up to about 250 GeV.

High Energy Physics - Phenomenology · Physics 2009-10-22 J. F. Gunion

A light CP-even Higgs boson with a mass of around 10 GeV could explain the recent BNL measurement of the muon anomalous magnetic moment. This observation is based on a general CP-conserving two Higgs doublet extension of the Standard Model…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Dedes , H. E. Haber

The possibility of a light charged Higgs boson $H^\pm$ that decays predominantly to quarks ($cs$ and/or $cb$) and with a mass in the range 80 GeV $\le m_{H^\pm} \le 90$ GeV is studied in the context of Three-Higgs-Doublet Models (3HDMs). At…

High Energy Physics - Phenomenology · Physics 2018-12-26 A. G. Akeroyd , Stefano Moretti , Muyuan Song

The recent discovery of a Higgs-like boson at the LHC with a mass of 126 GeV has revived the interest in supersymmetric models, which predicted a Higgs boson mass below 130 GeV long before its discovery. We compare systematically the…

High Energy Physics - Phenomenology · Physics 2015-06-16 C. Beskidt , W. de Boer , D. I. Kazakov

The properties of a Higgs boson candidate are measured in the H to ZZ to 4l decay channel, with l = e, mu, using data from pp collisions corresponding to an integrated luminosity of 5.1 inverse femtobarns at the center-of-mass energy of…

High Energy Physics - Experiment · Physics 2014-06-11 CMS Collaboration

In 2018, the CMS collaboration reported a di-photon excess around 95.3 GeV with a local significance of 2.8 $\sigma$. Interestingly, the CMS collaboration also reported a di-tau excess recently at 95 $\sim$ 100 GeV with a local significance…

High Energy Physics - Phenomenology · Physics 2023-09-19 Weichao Li , Haoxue Qiao , Jingya Zhu

Doubly charged Higgs bosons are predicted in many new physics models with an extended Higgs sector that contains a Higgs triplet field. Current experimental searches have been focusing mainly on the scenario in which the same-sign dilepton…

High Energy Physics - Phenomenology · Physics 2012-06-19 Cheng-Wei Chiang , Takaaki Nomura , Koji Tsumura

We consider the production of a light non-standard model Higgs boson of order $100~\GEV$ with an associated $W$ boson at CERN Large Hadron Collider. We focus on an interesting scenario that, the Higgs boson decays predominately into two…

High Energy Physics - Phenomenology · Physics 2010-11-08 Chuan-Ren Chen , Mihoko M. Nojiri , Warintorn Sreethawong

A study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17.3 inverse femtobarns, collected by the CMS experiment in proton-proton collisions at…

High Energy Physics - Experiment · Physics 2013-03-07 CMS Collaboration

We present a search for a Higgs boson decaying into a pair of photons based on 9.6 fb-1 of p-pbar collisions at sqrt(s)=1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. The search employs multivariate techniques to…

High Energy Physics - Experiment · Physics 2013-09-25 D0 Collaboration

Decays of the 125 GeV Higgs boson into a Z boson and a $\rho^0$(770) or $\phi$(1020) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at $\sqrt{s} = $ 13 TeV. The analysed data set…

High Energy Physics - Experiment · Physics 2020-11-13 CMS Collaboration