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Light and heavy charged Higgs bosons are predicted by many models with an extended Higgs sector such as the two-Higgs-doublet model (2HDM). Searches for the charged Higgs bosons have been done by the ATLAS and the CMS experiments at the…

High Energy Physics - Phenomenology · Physics 2017-03-13 S. Mohammad Moosavi Nejad , S. Abbaspour

The observation of a new boson of mass $\sim 125\gev$ at the CERN LHC may finally have revealed the existence of a Higgs boson. Now we have the opportunity to scrutinize its properties, determining its quantum numbers and couplings to the…

High Energy Physics - Phenomenology · Physics 2013-05-30 Alexandre Alves

We evaluate the LHC discovery potential for the fourth family Standard Model neutrinos in the process $pp\to Z/h\to\nu_{4}{\bar{\nu}_{4}}\to W\mu W\mu$. We show that, depending on their masses, the simultaneous discovery of both the Higgs…

High Energy Physics - Phenomenology · Physics 2009-01-06 T. Cuhadar-Donszelmann , M. Karagoz Unel , V. E. Ozcan , S. Sultansoy , G. Unel

The prospects for discovery of the five Higgs bosons of the minimal supersymmetric standard model are assessed for existing and planned future colliders, including LEP\,I, LEP\,II, LHC and SSC. As a benchmark for comparisons, we take a…

High Energy Physics - Phenomenology · Physics 2009-09-15 V. Barger , Kingman Cheung , R. J. N. Phillips , A. L. Stange

As is well-known, Trinification, \ie, the extension of the Standard Model (SM) to $[SU(3)]^3=SU(3)_c\times SU(3)_L\times SU(3)_R$ as occurs in $E_6$ models, allows for a partial unification of the gauge forces even though quarks and leptons…

High Energy Physics - Phenomenology · Physics 2023-08-29 Thomas G. Rizzo

After the Higgs boson discovery in 2012, the investigation of its properties and compatibility with the standard model predictions is central to the physics program of the LHC experiments. Likewise, the study of the top quark is still…

High Energy Physics - Experiment · Physics 2017-08-29 Rebeca Gonzalez Suarez

A search for charged Higgs bosons heavier than the top quark and decaying via $H^\pm \rightarrow tb$ is presented. The data analysed corresponds to 36.1 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV and was recorded with the ATLAS…

High Energy Physics - Experiment · Physics 2018-11-27 ATLAS Collaboration

The search for the Higgs boson is a major physics goal of the future Large Hadron Collider. The discovery potential is described as a function of the Higgs mass. It is shown that a Standard Model Higgs boson can be discovered within the…

High Energy Physics - Experiment · Physics 2007-05-23 Bruce Mellado

The currently accepted mathematical description of the fundamental constituents and interactions of matter is the Standard Model of particle physics. Its last missing particle, the famous Higgs boson, was observed at the Large Hadron…

High Energy Physics - Phenomenology · Physics 2024-03-22 Andreas Crivellin , Bruce Mellado

Top quarks are a prime system for hunting for new physics. Nonetheless, two decades on from their discovery few of their couplings have been measured to high precision. We present an overview of current determinations and the expected…

High Energy Physics - Experiment · Physics 2013-09-17 Jahred Adelman , Matthew Baumgart , Aran Garcia-Bellido , Andrey Loginov

We present projections for future collider searches for dark matter produced in association with bottom or top quarks. Such production channels give rise to final states with missing transverse energy and one or more b-jets. Limits are…

High Energy Physics - Experiment · Physics 2013-08-05 Giacomo Artoni , Tongyan Lin , Bjoern Penning , Gabriella Sciolla , Alessio Venturini

The Run 2 data taking period of the Large Hadron Collider (LHC) at CERN in years 2015-2018 has presented a great opportunity to search for physics beyond the standard model (BSM). It will be followed by the Run 3 period starting in 2022,…

High Energy Physics - Experiment · Physics 2022-04-08 Sezen Sekmen

A brief overview of the main highlights discussed at ICHEP 2014 is presented. The experimental data confirm that the scalar boson discovered at the LHC couples to other particles as predicted in the Standard Model. This constitutes a great…

High Energy Physics - Phenomenology · Physics 2015-06-09 Antonio Pich

A search is conducted for a new beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons ($\ell =$ $e$ or $\mu$). This decay is presumed to occur via an intermediate state which contains one…

High Energy Physics - Experiment · Physics 2018-07-25 ATLAS Collaboration

Eleven years ago, the Higgs boson was discovered at the LHC. I briefly survey the status of Higgs boson physics today and explore some of the implications for future Higgs studies. Although current experimental measurements are consistent…

High Energy Physics - Phenomenology · Physics 2023-10-13 Howard E. Haber

The ATLAS Collaboration at the LHC continues investigating the possibility to detect particles predicted by Little Higgs models. In this talk, the latest results on the Z/W h decays and on the hadronic decays of the new gauge bosons Z_H/W_H…

High Energy Physics - Experiment · Physics 2011-04-11 Fabienne Ledroit

Lattice work, exploring the Higgs mass triviality bound, seems to indicate that a strongly interacting scalar sector in the minimal standard model cannot exist while low energy QCD phenomenology seems to indicate that it could. We attack…

High Energy Physics - Lattice · Physics 2009-10-22 U. M. Heller , H. Neuberger , P. Vranas

Experimental measurements of the properties of the top quark have improved and will continue to improve significantly, with the excellent operation of the CDF and D0 experiments and the Tevatron $p\bar{p}$ collider at the Fermi National…

High Energy Physics - Experiment · Physics 2010-04-22 Evelyn J. Thomson

We investigate the possibility of incorporating a chiral fourth generation into a GUT model. We find that in order to do so, precision fits to electroweak observables demand the introduction of light (< M_Z) supersymmetric particles. This…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. D. Froggatt , J. E. Dubicki

The Electroweak sector of the Standard Model is reviewed and best fits are presented for its free parameters based on currently available experimental tests. The Standard Model remains an excellent descriptions of the available experimental…

High Energy Physics - Experiment · Physics 2009-09-29 Sijbrand de Jong