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We present the results of searches for the standard model Higgs boson at CDF in final states with bottom quarks. Results are derived from the complete Tevatron Run II dataset, with a measured integrated luminosity of 9.5 fb$^{-1}$ of…

高能物理 - 实验 · 物理学 2019-08-13 Weiming Yao

In these lectures we present a brief review of the Higgs boson sector in the ``Standard Model'', and its Minimal Supersymmetric Extension, with particular emphasis on the main mechanisms for Higgs production and decay at LEP2 and LHC, and…

高能物理 - 唯象学 · 物理学 2016-09-06 M. Quiros

A search for evidence of invisible-particle decay modes of a Higgs boson produced in association with a Z boson at the Large Hadron Collider is presented. No deviation from the Standard Model expectation is observed in 4.5 fb$^{-1}$ (20.3…

高能物理 - 实验 · 物理学 2014-10-23 ATLAS Collaboration

We give an overview of Standard Model Higgs boson studies performed at the CDF and Dzero experiments at the Tevatron proton-antiproton collider. Combining the results of many individual analyses, most of which use the full data set…

高能物理 - 实验 · 物理学 2014-04-14 Kyle J. Knoepfel

After a brief review of the muon g-2 status, we discuss hypothetical errors in the Standard Model prediction that might explain the present discrepancy with the experimental value. None of them seems likely. In particular, a hypothetical…

高能物理 - 唯象学 · 物理学 2015-05-18 M. Passera , W. J. Marciano , A. Sirlin

We present bounds on the Higgs mass in the Standard Model and in the Minimal Supersymmetric Standard Model using the effective potential with next-to-leading logarithms resummed by the renormalization group equations, and physical (pole)…

高能物理 - 唯象学 · 物理学 2007-05-23 Mariano Quirós

Higgs couplings can be affected by physics beyond the Standard Model. We study modifications through interactions with a hidden sector and in specific composite Higgs models accessible at the LHC. Both scenarios give rise to congruent…

高能物理 - 唯象学 · 物理学 2011-03-28 Sebastian Bock , Remi Lafaye , Tilman Plehn , Michael Rauch , Dirk Zerwas , Peter M. Zerwas

In July 2012, the ATLAS and CMS Collaborations at the CERN Large Hadron Collider announced the observation of a Higgs boson at a mass of around 125 GeV. Ten years later, and with the data corresponding to the production of 30 times larger…

高能物理 - 实验 · 物理学 2023-03-15 CMS Collaboration

The current status of the quantities entering into the global electroweak fits is reviewed, highlighting changes since Summer 2003. These data include the precision electroweak properties of the Z and W bosons, the top-quark mass and the…

高能物理 - 唯象学 · 物理学 2017-08-23 Peter B. Renton

Extrapolating the Standard Model to high scales using the renormalisation group, three possibilities arise, depending on the mass of the Higgs boson: if the Higgs mass is large enough the Higgs self-coupling may blow up, entailing some new…

高能物理 - 唯象学 · 物理学 2009-09-28 J. Ellis , J. R. Espinosa , G. F. Giudice , A. Hoecker , A. Riotto

We discuss a possibility that the parameter space of the two Higgs doublet model is significantly narrowed down by considering the synergy between direct searches for additional Higgs bosons at the LHC and its luminosity upgraded operation…

高能物理 - 唯象学 · 物理学 2021-04-07 Masashi Aiko , Shinya Kanemura , Mariko Kikuchi , Kentarou Mawatari , Kodai Sakurai , Kei Yagyu

We present a new global fit to precision electroweak data, including new low- and high-energy data and analyzing the radiative corrections arising from the minimal symmetry breaking sectors of the Standard Model (SM) and its supersymmetric…

高能物理 - 唯象学 · 物理学 2009-09-11 John Ellis , G. L Fogli , E. Lisi

It is expected that hadron collider measurements of the Higgs boson mass using the decay h -> W^+W^-, followed by the leptonic decay of each W-boson, will be performed by fitting the shape of a distribution which is sensitive to the Higgs…

高能物理 - 唯象学 · 物理学 2010-04-15 Alan J. Barr , Ben Gripaios , Christopher Gorham Lester

The discovery of the Higgs boson, with mass known to better than the percent level, enables for the first time precision Higgs boson analyses. Toward this goal, we define an expansion formalism of the Higgs boson partial widths and…

高能物理 - 唯象学 · 物理学 2014-03-25 Leandro G. Almeida , Seung J. Lee , Stefan Pokorski , James D. Wells

We present a search for the standard model Higgs boson produced with a Z boson in 4.1 fb^-1 of data collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z…

高能物理 - 实验 · 物理学 2010-12-28 The CDF Collaboration , T. Aaltonen

We discuss the lower Higgs boson mass bounds which come from the absolute stability of the Standard Model (SM) vacuum and from the Higgs inflation, as well as the prediction of the Higgs boson mass coming from asymptotic safety of the SM.…

高能物理 - 唯象学 · 物理学 2015-06-05 Fedor Bezrukov , Mikhail Yu. Kalmykov , Bernd A. Kniehl , Mikhail Shaposhnikov

The LEP Collaborations have reported a small excess of events in their combined Higgs boson analysis at center of mass energies up to about 208 GeV. In this communication, I present the result of a calculation of the probability…

高能物理 - 唯象学 · 物理学 2008-11-26 Jens Erler

The global fit of the Standard Model predictions to electroweak precision data, which has been routinely performed in the past decades by several groups, led to the prediction of the top quark and the Higgs boson masses before their…

高能物理 - 唯象学 · 物理学 2019-05-01 Jens Erler , Matthias Schott

Recently, the LEP collaborations have reported a lower bound on a Standard Model-like Higgs boson of order 89 GeV. We discuss the implications of this bound for the minimal supersymmetric extension of the Standard Model (MSSM). In…

高能物理 - 唯象学 · 物理学 2008-11-26 M. Carena , P. H. Chankowski , S. Pokorski , C. E. M. Wagner

We review the present status of Higgs physics within the standard model and its extensions. First, we briefly summarize the current experimental exclusion limits from the direct searches with LEP1 and the Tevatron, and assess the discovery…

高能物理 - 唯象学 · 物理学 2007-05-23 Bernd A. Kniehl