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The latest results on the measurement of the properties of the new boson with mass around 125 GeV are reported. The analysis uses pp collision data recorded by the CMS detector at the LHC, corresponding to integrated luminosities of 5.1…

High Energy Physics - Experiment · Physics 2016-04-20 Linda Finco

In the Standard Model (SM) of particle physics, the branching ratio for Higgs boson decays to a final state which is invisible to collider detectors, $H \rightarrow ZZ^{\star} \rightarrow \nu \bar{\nu} \nu \bar{\nu}$, is order 0.10%. In…

High Energy Physics - Phenomenology · Physics 2022-03-30 Chris Potter , Amanda Steinhebel , Jim Brau , Austin Pryor , Andy White

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

I estimate the accuracies on Higgs boson coupling constants that experiments at the Large Hadron Collider and the International Linear Collider are capable of reaching over the long term.

High Energy Physics - Phenomenology · Physics 2013-04-02 Michael E. Peskin

We demonstrate that, at a 500 GeV e+e- collider, inclusion of the $ZZ$-fusion process for production of a light standard-model-like Higgs boson can substantially increase the precision with which the $ZZh$ coupling can be determined (using…

High Energy Physics - Phenomenology · Physics 2009-10-31 J. F. Gunion , T. Han , R. Sobey

We study the search for an extra scalar $S$ boson produced in association with the $Z$ boson at the International Linear Collider (ILC). The study is performed at center-of-mass energies of 250 GeV and 500 GeV based on the full simulation…

High Energy Physics - Experiment · Physics 2019-02-19 Yan Wang , Jenny List , Mikael Berggren

The Standard Model predicts the value of the Higgs self-coupling but it cannot be measured at LHC. This measurement requires a machine such as the proposed International Linear Collider. Here, the sensitivity to the Higgs self-coupling is…

High Energy Physics - Experiment · Physics 2009-02-02 Michele Faucci Giannelli

The International Linear Collider is now proposed with a staged machine design, with the first stage at 250 GeV with a luminosity goal of 2 ab-1. In this paper, we review the physics expectations for this machine. These include precision…

We study the observability of the Higgs boson in the "charming Higgs" model. In this model the Higgs boson primarily undergoes a cascade decay to four charm quarks via light intermediate pseudoscalars. Such a decay allows the Higgs boson to…

High Energy Physics - Phenomenology · Physics 2012-07-25 Ian Lewis , Jared Schmitthenner

The observation of a SM-like Higgs boson in multiple channels at the LHC allows the extraction of Higgs couplings to gauge bosons and fermions. The precision achievable at the LHC, for an integrated luminosity of 200 fb^{-1}, is reviewed…

High Energy Physics - Phenomenology · Physics 2008-11-26 Dieter Zeppenfeld

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

The Circular Electron Positron Collider (CEPC) is a future Higgs factory proposed by the Chinese high energy physics community. It will operate at a center-of-mass energy of 240-250 GeV. The CEPC will accumulate an integrated luminosity of…

High Energy Physics - Experiment · Physics 2017-01-13 Zhenxing Chen , Ying Yang , Manqi Ruan , Dayong Wang , Gang Li , Shan Jin , Yong Ban

Measurement of the Higgs coupling to W-bosons is an important test of our understanding of the electroweak symmetry breaking mechanism. We study the sensitivity of the International Linear Collider (ILC) to the presence of anomalous HW+W-…

High Energy Physics - Phenomenology · Physics 2015-03-17 Yosuke Takubo , Robert N. Hodgkinson , Katsumasa Ikematsu , Keisuke Fujii , Nobuchika Okada , Hitoshi Yamamoto

Searches for HZ production with the Higgs boson decaying into an invisible final state were performed using the data collected by the DELPHI experiment at centre-of-mass energies between 188 GeV and 209 GeV. Both hadronic and leptonic final…

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

Production of the Standard Model Higgs-boson at the Photon Collider at TESLA is studied for the Higgs-boson masses above 150 GeV. Simulation of signal and background processes takes into account realistic luminosity spectra and detector…

High Energy Physics - Phenomenology · Physics 2009-11-07 P. Niezurawski , A. F. Zarnecki , M. Krawczyk

This study investigates the potential of the TESLA Linear Collider for measuring resonance parameters of Higgs bosons beyond the mass range studied so far. The analysis is based on the reconstruction of events from the Higgsstrahlung…

High Energy Physics - Phenomenology · Physics 2007-05-23 Niels Meyer

To ascertain the new boson with mass near 125 {GeV} observed recently by ATLAS and CMS Collaborations to be the Standard Model Higgs, and to determine its intrinsic properties, more measurements on its various decay channels are still…

High Energy Physics - Phenomenology · Physics 2015-06-12 Long-Bin Chen , Cong-Feng Qiao , Rui-Lin Zhu

We study the prospects for discovering an extra scalar boson $S^0$ at the International Linear Collider (ILC) based on a full simulation of the International Large Detector (ILD). In order to provide results in an as model-independent way…

High Energy Physics - Experiment · Physics 2020-05-14 Yan Wang , Mikael Berggren , Jenny List

We studied the possibility of measuring invisible Higgs boson decays at CLIC running at 380 GeV and 1.5 TeV. The analysis is based on the WHIZARD event generation and fast simulation of the CLIC detector response with DELPHES. We considered…

High Energy Physics - Experiment · Physics 2021-07-26 Krzysztof Mekala , Aleksander Filip Zarnecki , Bohdan Grzadkowski , Michal Iglicki

We study the Higgs self couplings of a supersymmetric $E_6$ model that has two Higgs doublets and two Higgs singlets. The lightest scalar Higgs boson in the model may be heavier than 112 GeV, at the one-loop level, where the negative…

High Energy Physics - Phenomenology · Physics 2009-12-01 S. W. Ham , Kideok Han , Jungil Lee , S. K. Oh
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