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A Bayesian analysis is carried out to identify the consistent regions of the mSUGRA parameter space, where the newly-discovered Higgs boson's mass is used as a constraint, along with other experimental constraints. It is found that…

High Energy Physics - Phenomenology · Physics 2012-10-16 Sujeet Akula , Pran Nath , Gregory Peim

A possible discovery of a relatively light charged Higgs boson H^+ in near future experiments, with a mass M_{H+} ~< 110 GeV, together with the present LEP2 direct limits on the chargino and neutral Higgs sectors, would disfavour the…

High Energy Physics - Phenomenology · Physics 2009-11-07 C. Panagiotakopoulos , A. Pilaftsis

The present experimental and theoretical knowledge of the physics of electroweak symmetry breaking is reviewed. Data still favor a light Higgs boson, of a kind that can be comfortably accommodated in the Standard Model or in its Minimal…

High Energy Physics - Phenomenology · Physics 2009-11-07 Fabio Zwirner

We study a holographic model dual to walking/conformal technicolor (W/C TC) deforming a hard-wall type of bottom-up setup by including effects from techni-gluon condensation. We calculate masses of (techni-) $\rho$ meson, $a_1$ meson, and…

High Energy Physics - Phenomenology · Physics 2010-03-16 Kazumoto Haba , Shinya Matsuzaki , Koichi Yamawaki

We probe the dimension-six operators contributing to Higgs production in association with a $Z$ boson at the future high-luminosity electron-positron colliders. Potential constraints on dimension-six operators in the Higgs sector are…

High Energy Physics - Phenomenology · Physics 2017-03-29 Hamzeh Khanpour , Mojtaba Mohammadi Najafabadi

We study analytically and numerically the bounds imposed by the electroweak precision tests on a minimal composite Higgs model. The model is based on spontaneous SO(5)/SO(4) breaking, so that an approximate custodial symmetry is preserved.…

High Energy Physics - Phenomenology · Physics 2010-04-30 Marc Gillioz

In the context of minimal supersymmetric standard model (MSSM), we discuss the possibility of the lightest Higgs boson with mass $M_h = 98 $ GeV to be consistent with the $2.3\sigma$ excess observed at the LEP in the decay mode $e^+e^- \to…

High Energy Physics - Phenomenology · Physics 2016-04-13 Biplob Bhattacherjee , Manimala Chakraborti , Amit Chakraborty , Utpal Chattopadhyay , Dilip Kumar Ghosh

The discovery of the Higgs boson has led to new possible signatures for heavy resonance searches at the LHC. Since then, search channels including at least one Higgs boson plus another particle have formed an important part of the program…

High Energy Physics - Experiment · Physics 2025-04-10 CMS Collaboration

In the Higgs search at the LHC, a light Higgs boson (115 GeV <~ M_H <~ 130 GeV) is not excluded by experimental data. In this mass range, the width of the Standard Model Higgs boson is more than four orders of magnitude smaller than its…

High Energy Physics - Phenomenology · Physics 2015-06-05 Nikolas Kauer , Giampiero Passarino

The discovery of a heavy Higgs boson with mass up to m_H = 1 TeV at the CERN LHC is possible in the H--> W^+W^- --> l nu jj decay mode. The weak boson scattering signal and backgrounds from t\bar tjj and from W+jets production are analyzed…

High Energy Physics - Phenomenology · Physics 2016-08-25 K. Iordanidis , D. Zeppenfeld

A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample corresponds to…

High Energy Physics - Experiment · Physics 2013-07-05 CMS Collaboration

The Standard Model provides an excellent description of the observables measured at high energy lepton and hadron colliders. However, measurements of the forward-backward asymmetry of the bottom quark at LEP suggest that the effective…

High Energy Physics - Phenomenology · Physics 2009-10-07 D. E. Morrissey , C. E. M. Wagner

We first formulate, in the framework of effective Lagrangian, the general form of the effective interactions of the lightest Higgs boson h and a heavier neutral Higgs boson H in a multi-Higgs system taking account of Higgs mixing effect. We…

High Energy Physics - Phenomenology · Physics 2016-02-15 Yu-Ping Kuang , Hong-Yu Ren , Ling-Hao Xia

A search is presented for pairs of light pseudoscalar bosons, in the mass range from 4 to 15 GeV, produced from decays of the 125 GeV Higgs boson. The decay modes considered are final states that arise when one of the pseudoscalars decays…

High Energy Physics - Experiment · Physics 2019-12-06 CMS Collaboration

We examine the possibility that the recently discovered 125 GeV higgs like resonance actually corresponds to a dilaton: the Goldstone boson of scale invariance spontaneously broken at a scale f. Comparing to LHC data we find that a dilaton…

High Energy Physics - Phenomenology · Physics 2015-06-11 Brando Bellazzini , Csaba Csáki , Jay Hubisz , Javi Serra , John Terning

LHC searches for the standard model Higgs Boson in \gamma\gamma\ or \tau\tau\ decay modes place strong constraints on the light technipion state predicted in technicolor models that include colored technifermions. Compared with the standard…

High Energy Physics - Phenomenology · Physics 2012-02-08 R. Sekhar Chivukula , Pawin Ittisamai , Jing Ren , Elizabeth H. Simmons

We propose a new mechanism for producing a Higgs boson mass near 125 GeV within the MSSM. By coupling the MSSM Higgs boson to a set of strongly interacting fields, large corrections to the Higgs quartic coupling are induced. Although the…

High Energy Physics - Phenomenology · Physics 2013-05-30 Jason L. Evans , Masahiro Ibe , Tsutomu T. Yanagida

A search is performed for a pseudoscalar Higgs boson, A, decaying into a 125 GeV Higgs boson h and a Z boson. The h boson is specifically targeted in its decay into a pair of tau leptons, while the Z boson decays into a pair of electrons or…

High Energy Physics - Experiment · Physics 2020-03-16 CMS Collaboration

We have adopted two Higgs doublet models to study the production of a Higgs pseudoscalar ($A^0$) in association with a $Z$ gauge boson from gluon fusion ($gg \to ZA^0$) at the CERN Large Hadron Collider. The prospects for the discovery of…

High Energy Physics - Phenomenology · Physics 2014-11-17 Chung Kao , Geoffrey Lovelace , Lynne Orr

In this article, we recast and combine the CMS and ATLAS analyses of the Standard Model Higgs boson decaying to a pair of $W$ bosons in order to search for low-mass resonances in this channel. We provide limits on the corresponding cross…

High Energy Physics - Phenomenology · Physics 2023-08-10 Guglielmo Coloretti , Andreas Crivellin , Srimoy Bhattacharya , Bruce Mellado