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Related papers: Combining LEP and LHC to bound the Higgs Width

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As one category of vector boson fusion, photo-production is one important production mechanism at $e$-$p$ colliders. A future $e$-$p$ collider -- Large Hadron-electron Collider (LHeC) has been discussed as a "Higgs factory" candidate where…

High Energy Physics - Phenomenology · Physics 2020-08-05 Ruibo Li , Xiang Lv , Bo-Wen Wang , Kai Wang , Tao Xu

A precise measurement of the Higgs boson couplings to bottom and top quarks is of paramount importance during the upcoming LHC runs. We present a comprehensive analysis for the Higgs production process in association with a…

High Energy Physics - Phenomenology · Physics 2016-01-27 Niccolo Moretti , Petar Petrov , Stefano Pozzorini , Michael Spannowsky

A study of two-Higgs-doublet models (2HDM) in the decoupling limit reveals the existence of parameter configurations with a large triple-Higgs self-coupling as the only low-energy trace of a departure from a Standard Model (SM) Higgs…

High Energy Physics - Phenomenology · Physics 2017-08-23 M. Moretti , S. Moretti , F. Piccinini , R. Pittau , A. D. Polosa

Probing the properties of the discovered Higgs boson may tell us whether or not it is the same particle as the one predicted by the Standard Model. To this aim we parametrize deviations of the Higgs couplings to matter from the Standard…

High Energy Physics - Phenomenology · Physics 2016-02-22 Hermes Belusca-Maito

In general, charged Higgs bosons $H^\pm$ appear in non-minimal Higgs models. The $H^\pm W^\mp Z$ vertex is known to be related to the violation of the global symmetry (custodial symmetry) in the Higgs sector. Its magnitude strongly depends…

High Energy Physics - Phenomenology · Physics 2011-05-12 Shinya Kanemura , Kei Yagyu , Kazuya Yanase

Interaction of Higgs scalar (H) with weak gauge bosons (V=W,Z) is the {\it key} to understand electroweak symmetry breaking (EWSB) mechanism. New physics effects in the HVV interactions, as predicted by models of compositeness,…

High Energy Physics - Phenomenology · Physics 2010-04-05 Hong-Jian He , Yu-Ping Kuang , C. -P. Yuan , Bin Zhang

We identify the differential cross sections for $t\bar t$ production and the total cross section for Higgs production through gluon fusion as the processes in which the two effective operators describing the leading non-standard…

High Energy Physics - Phenomenology · Physics 2017-10-25 D. Barducci , M. Fabbrichesi , A. Tonero

Associated production of a Higgs boson with a heavy, i.e. top or bottom, quark-anti-quark pair provide observation channels for Higgs bosons at the LHC which can be used to measure the respective Yukawa couplings. For the light…

High Energy Physics - Phenomenology · Physics 2008-11-26 Wolfgang Hollik , Michael Rauch

We derive model-independent constraints on Higgs mass and couplings from associated signals for higher masses, accessible at LEP2. This work is motivated by the fact that, in many extensions of the standard model, the Higgs boson can have…

High Energy Physics - Phenomenology · Physics 2009-09-17 A. Lopez-Fernandez , J. C. Romão , F. de Campos , J. W. F. Valle

We study the implications of the absence of a direct discovery of a Higgs boson at LEP. First we exhibit 15 physically different ways in which one or more Higgs bosons lighter than the LEP limit could still exist. In the minimal…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. L. Kane , Brent D. Nelson , Lian-Tao Wang , Ting T. Wang

Far off-shell Higgs production in $H \rightarrow WW,ZZ$, is a particularly powerful probe of Higgs properties, allowing one to disentangle Higgs width and coupling information unavailable in on-shell rate measurements. These measurements…

High Energy Physics - Phenomenology · Physics 2015-06-19 Ian Moult , Iain W. Stewart

Charged lepton pairs are produced copiously in high-energy hadron collisions via electroweak gauge boson exchange, and are one of the most precisely measured final states in proton-proton collisions at the Large Hadron Collider (LHC). We…

High Energy Physics - Phenomenology · Physics 2021-10-04 S. Amoroso , J. Fiaschi , F. Giuli , A. Glazov , F. Hautmann , O. Zenaiev

In the framework of the Left-Right twin Higgs (LRTH) model, we consider the constrains from the latest search for high-mass dilepton resonances at the LHC and find that the heavy neutral boson $Z_H$ is excluded with mass below 2.76 TeV.…

High Energy Physics - Phenomenology · Physics 2015-05-20 Jinzhong Han , Shaofeng Li , Bingfang Yang , Ning Liu

In this review, we discuss methods of parsing direct and indirect information from collider experiments regarding the Higgs boson and describe simple ways in which experimental likelihoods can be consistently reconstructed and interfaced…

High Energy Physics - Phenomenology · Physics 2013-03-20 Aleksandr Azatov , Jamison Galloway

We study the production of a Higgs boson in association to a top-antitop pair at the Large Hadron Collider. We show how precise predictions for the differential distributions with respect to the transverse momentum of the Higgs boson, to…

High Energy Physics - Phenomenology · Physics 2017-10-25 Alessandro Broggio , Andrea Ferroglia , Miguel C. N. Fiolhais , Antonio Onofre

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

The measurement of the trilinear and quartic Higgs self-couplings is necessary for the reconstruction of the Higgs potential. This way the Higgs mechanism as the origin of electroweak symmetry breaking can be tested. The couplings are…

High Energy Physics - Phenomenology · Physics 2015-03-17 Ramona Grober , Margarete Muhlleitner

The SM-like Higgs pair productions are discussed in the framework of the general CP-violating two-Higgs-doublet model, where we find the CP-violating mixing angles can be related to the Higgs self couplings. Therefore, the future…

High Energy Physics - Phenomenology · Physics 2017-12-06 Ligong Bian , Ning Chen , Yun Jiang

Based on the analysis of 5 fb^-1 of data at the LHC, the ATLAS and CMS collaborations have presented evidence for a Higgs boson with a mass in the 125 GeV range. We consider the 125 GeV neutral Higgs pair production process in the context…

High Energy Physics - Phenomenology · Physics 2012-11-26 Hao Sun , Ya-Jin Zhou , He Chen

Despite the discovery of a Higgs boson h(125GeV) at the LHC Run-1, its self-interaction has fully evaded direct experimental probe so far. Such self-interaction is vital for electroweak symmetry breaking, vacuum stability and electroweak…

High Energy Physics - Phenomenology · Physics 2016-01-08 Hong-Jian He , Jing Ren , Weiming Yao