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The prospects for the measurement of the pseudoscalar admixture in the h-tau-tau coupling to a Standard Model Higgs boson of 120 GeV mass are discussed in a quantitative manner e+ e- collisions of 350 GeV centre-of-mass energy. Specific…

高能物理 - 唯象学 · 物理学 2010-04-05 K. Desch , A. Imhof , Z. Was , M. Worek

The Large Electron Positron collider observed an indication for a new Higgs boson with a mass around $95$\,GeV-$100$\,GeV in the process $e^+e^-\to Z^*\to ZS$ with $S\to b\bar b$. The interest in this excess re-emerged with the di-photon…

We update the indirect constraints on the Georgi-Machacek model from $B$-physics and electroweak precision observables, including new constraints from $b \to s \gamma$ and $B^0_s \to \mu^+ \mu^-$. We illustrate the effect of these…

高能物理 - 唯象学 · 物理学 2015-06-23 Katy Hartling , Kunal Kumar , Heather E. Logan

We interpret the new particle at the Large Hadron Collider as a CP-even scalar and investigate its electroweak quantum number. Assuming an unbroken custodial invariance as suggested by precision electroweak measurements, only four…

高能物理 - 唯象学 · 物理学 2021-07-21 Ian Low , Joseph Lykken , Gabe Shaughnessy

With the deeper study of Higgs particle, Higgs precision measurements can be served to probe new physics indirectly. In many new physics models, vector-like quarks $T_L,~T_R$ occur naturally. It is important to probe their couplings with…

高能物理 - 唯象学 · 物理学 2020-10-29 Shi-Ping He

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…

高能物理 - 唯象学 · 物理学 2011-05-12 Shinya Kanemura , Kei Yagyu , Kazuya Yanase

A search is presented for a new scalar resonance, X, decaying to a standard model Higgs boson and another new scalar particle, Y, in the final state where the Higgs boson decays to a $\mathrm{b\bar{b}}$ pair, while the Y particle decays to…

高能物理 - 实验 · 物理学 2026-01-01 CMS Collaboration

We search for new massive scalar particles X and Y through the resonant process X $\to$ YH $\to$ $\mathrm{b\bar{b}b\bar{b}}$, where H is the standard model Higgs boson. Data from CERN LHC proton-proton collisions are used, collected at a…

高能物理 - 实验 · 物理学 2023-06-07 CMS Collaboration

The cross section for Higgs boson production in pp collisions is studied using the H to WW decay mode, followed by leptonic decays of the W bosons to an oppositely charged electron-muon pair in the final state. The measurements are…

高能物理 - 实验 · 物理学 2017-04-04 CMS Collaboration

ATLAS and CMS recently show the first results from run 2 of the Large Hadron Collider (LHC) at $\sqrt{s}=13$ TeV. A resonant bump at a mass of around 750 GeV in the diphoton invariant mass spectrum is indicated and the corresponding…

高能物理 - 唯象学 · 物理学 2016-03-30 R. Benbrik , Chuan-Hung Chen , Takaaki Nomura

Production cross sections of the standard model Higgs boson decaying to a pair of W bosons are measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis targets Higgs bosons produced via gluon fusion, vector…

高能物理 - 实验 · 物理学 2023-07-28 CMS Collaboration

A search is presented for a standard model-like Higgs boson decaying to muon pair or electron pair final states based on proton-proton collisions recorded by the CMS experiment at the CERN LHC. The data correspond to integrated luminosities…

高能物理 - 实验 · 物理学 2015-04-23 CMS Collaboration

In this paper, we discuss application of the TauSpinner package as a simulation tool for measuring the CP state of the newly discovered Higgs boson using the transverse spin correlations in the H to tau tau decay channel. We discuss…

高能物理 - 唯象学 · 物理学 2015-06-19 T. Przedzinski , E. Richter-Was , Z. Was

Production of the Standard Model Higgs-boson at the photon collider at TESLA is studied for the Higgs-boson masses above 170 GeV. By reconstructing WW and ZZ final states, not only the h to gamma-gamma partial width but also the phase of…

高能物理 - 唯象学 · 物理学 2007-05-23 P. Niezurawski , A. F. Zarnecki , M. Krawczyk

The LHC is making strides in the exploration of the properties of the newly discoverd Higgs boson, $h$. In Refs.~\cite{vonBuddenbrock:2015ema,Kumar:2016vut,vonBuddenbrock:2016rmr} the compatibility of the proton-proton data reported in the…

高能物理 - 唯象学 · 物理学 2018-01-17 Yaquan Fang , Mukesh Kumar , Bruce Mellado , Yu Zhang , Maosen Zhu

A search for the standard model Higgs boson in the rare mu+mu- decay channel is presented. The data samples, recorded by the CMS experiment at the LHC, correspond to integrated luminosities of 5.0 +/- 0.1 inverse femtobarns at 7 TeV…

高能物理 - 实验 · 物理学 2019-08-13 Justin Hugon

The inclusive Higgs production rate through gluon fusion has been measured to be in agreement with the Standard Model (SM). We show that even if the inclusive Higgs production rate is very SM-like, a precise determination of the boosted…

高能物理 - 唯象学 · 物理学 2015-06-19 Matthias Schlaffer , Michael Spannowsky , Michihisa Takeuchi , Andreas Weiler , Chris Wymant

We compute the fully differential decay rate of the Standard Model Higgs boson into b-quarks at next-to-next-to-leading order (NNLO) accuracy in alpha_S. We employ a general subtraction scheme developed for the calculation of higher order…

高能物理 - 唯象学 · 物理学 2016-08-08 Vittorio Del Duca , Claude Duhr , Gabor Somogyi , Francesco Tramontano , Zoltan Trocsanyi

To know the total width of the recently discovered Higgs boson particle, it is important to measure the invisible decay width of the Higgs boson. However, the signal for this measurement at the LHC, i.e., a charged lepton pair and missing…

高能物理 - 唯象学 · 物理学 2014-05-28 Jian Wang

A search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->l+l-l+l-, where l=e,mu, is presented. Proton-proton collision data at sqrt(s)=7 TeV recorded with the ATLAS detector and corresponding to an average integrated…

高能物理 - 实验 · 物理学 2012-08-27 ATLAS Collaboration