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Two important properties of a Higgs boson are its mass and width. They may distinguish the Standard Model (SM) Higgs boson from Higgs bosons of extended models. We show results from a direct mass and width reconstruction for a Higgs boson…

High Energy Physics - Phenomenology · Physics 2009-11-07 V. Drollinger , A. Sopczak

Measurements of the inclusive and differential fiducial cross sections for the Higgs boson production in the H $\to$ ZZ $\to$ 4$\ell$ ($\ell$ = e,$\mu$) decay channel are presented. The results are obtained from the analysis of…

High Energy Physics - Experiment · Physics 2023-08-14 CMS Collaboration

The measurements of the Higgs boson (H) production cross sections performed by the CMS Collaboration in the four-lepton (4$\ell$, $\ell$ = e, $\mu$) final state at a center-of-mass energy $\sqrt{s}$ = 13.6 TeV are presented. These…

High Energy Physics - Experiment · Physics 2025-05-22 CMS Collaboration

The measurements of the properties of the Higgs boson are presented in the H$\rightarrow$ZZ$\rightarrow$4$\ell$ ($\ell$=e,$\mu$) decay channel using a data sample corresponding to an integrated luminosity of 35.9 fb$^{-1}$ of proton-proton…

High Energy Physics - Experiment · Physics 2017-10-11 Muhammad Bilal Kiani

A measurement of inclusive and differential fiducial cross-sections for the production of the Higgs boson decaying into two photons is performed using $139~\text{fb}^{-1}$ of proton--proton collision data recorded at $\sqrt{s} = 13$ TeV by…

High Energy Physics - Experiment · Physics 2022-09-07 ATLAS Collaboration

New theoretical and experimental information motivates a re-examination of the Standard Model Higgs production rates at the LHC pp collider. We present calculations of the relevant cross sections and branching ratios, including recently…

High Energy Physics - Phenomenology · Physics 2008-02-03 Z. Kunszt , S. Moretti , W. J. Stirling

For the search for additional Higgs bosons in the Minimal Supersymmetric Standard Model (MSSM) as well as for future precision analyses in the Higgs sector a precise knowledge of their production properties is mandatory. We evaluate the…

High Energy Physics - Phenomenology · Physics 2016-05-25 S. Heinemeyer , C. Schappacher

In the framework of the littlest Higgs($LH$) model, we consider the processes $e^{+}e^{-}\to\nu\bar{\nu}H^{0}$ and $e^{+}e^{-}\to W^{*}W^{*}\nu\bar{\nu}\to\nu\bar{\nu}t\bar{t}$, and calculate the contributions of new particles to the cross…

High Energy Physics - Phenomenology · Physics 2009-01-07 Chong-Xing Yue , Wei Wang , Zheng-Jun Zong , Feng Zhang

The littlest Higgs model is the most economical little Higgs model. The observation of the new gauge bosons predicted by the littlest Higgs model could serve as a robust signature of the model. The ILC, with the high energy and luminosity,…

High Energy Physics - Phenomenology · Physics 2008-11-26 Xuelei Wang , Jihong Chen , Yaobei Liu , Suzhen Liu , Hua Yang

We calculate the cross section for the production of a Z boson in association with heavy quarks. We suggest that this cross section can be measured using an inclusive heavy-quark tagging technique. This could be used as a feasibility study…

High Energy Physics - Phenomenology · Physics 2011-01-25 Fabio Maltoni , Thomas McElmurry , Scott Willenbrock

We evaluate the $e^- e^+ \to e^- e^+ +h$ process through the $ZZ$ fusion channel at the International Linear Collider (ILC) operating at $500$ GeV and $1$ TeV center of mass energies. We perform realistic simulations on the signal process…

High Energy Physics - Phenomenology · Physics 2015-06-30 Tao Han , Zhen Liu , Zhuoni Qian , Joshua Sayre

The ILC Higgs White Paper is a review of Higgs Boson theory and experiment at the International Linear Collider (ILC). Theory topics include the Standard Model Higgs, the two-Higgs doublet model, alternative approaches to electroweak…

We illustrate the potential of a very high energy lepton collider (from 10 to 30 TeV center of mass energy) to explore new physics indirectly in the vector boson fusion double Higgs production process and in direct diboson production at…

High Energy Physics - Phenomenology · Physics 2023-01-11 Dario Buttazzo , Roberto Franceschini , Andrea Wulzer

Considering the constraints from the flavor physics, precision electroweak measurements, Higgs data and dark matter detections, we scan over the parameter space of the MSSM and calculate the cross section of $e^+e^- \to h \gamma$ in the…

High Energy Physics - Phenomenology · Physics 2014-09-26 Song Lin Hu , Ning Liu , Jie Ren , Lei Wu

The final state obtained when a Higgs boson decays to a photon and a Z boson has been mostly overlooked in current searches for a light Higgs boson. However, when the Z boson decays leptonically, all final state particles in this channel…

High Energy Physics - Phenomenology · Physics 2015-03-19 James S. Gainer , Wai-Yee Keung , Ian Low , Pedro Schwaller

Properties of the Higgs boson are measured in the two-photon final state using 36.1 fb$^{-1}$ of proton-proton collision data recorded at $\sqrt{s} = 13$ TeV by the ATLAS experiment at the Large Hadron Collider. Cross-section measurements…

High Energy Physics - Experiment · Physics 2019-01-11 ATLAS Collaboration

The Higgs boson trilinear and quartic self-couplings are directly related to the shape of the Higgs potential; measuring them with precision is extremely important, as they provide invaluable information on the electroweak symmetry breaking…

High Energy Physics - Experiment · Physics 2022-03-24 Angela Taliercio , Paola Mastrapasqua , Claudio Caputo , Pietro Vischia , Nicola De Filippis , Pushpalatha Bhat

An accurate determination of the Higgsstrahlung cross section is one of the main objectives at a future electron-positron collider. It allows for the only Higgs boson decay model independent measurement of the total Higgs width. Current…

High Energy Physics - Experiment · Physics 2020-02-20 Jonas Kunath , Jean-Claude Brient

A summary of the methods used to make a precision measurement of the Higgs boson mass is presented. The final mass value for the Higgs boson is measured to be $m_{\rm H} = 125.26 \pm 0.21\ \mathrm{GeV}$. This analysis considers the…

High Energy Physics - Experiment · Physics 2019-10-23 Jake Rosenzweig

Properties of the Higgs boson with mass near 125 GeV are measured in proton-proton collisions with the CMS experiment at the LHC. Comprehensive sets of production and decay measurements are combined. The decay channels include gamma gamma,…

High Energy Physics - Experiment · Physics 2015-06-16 CMS Collaboration
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