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Related papers: Casting Light on BSM Physics with SM Standard Cand…

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Precision observables are well known for constraining most of the Beyond Standard Model (BSM) scenarios tightly. We present here a simple and comprehensive fitting framework for various BSM scenarios to these observables. We start with the…

High Energy Physics - Phenomenology · Physics 2023-05-24 Mathew Thomas Arun , Kuldeep Deka , Tripurari Srivastava

We report on recent results obtained by the Belle II experiment related to searches for beyond-the-standard-model physics. The $B$ meson decay data sample used corresponds to an integrated luminosity of $L = 189$ fb$^{-1}$. In recent years,…

High Energy Physics - Experiment · Physics 2023-08-15 Roberta Volpe , Belle II Collaboration

The precision measurements of electroweak parameters of the Standard Model with the ATLAS detector at LHC are reviewed. An emphasis is put on the bridge connecting the ATLAS measurements with the SM analysis at LEP/SLC and the Tevatron.

High Energy Physics - Phenomenology · Physics 2008-08-14 Arif Akhundov

The discovery potentials of ATLAS and CMS experiments at the Large Hadron Collider (LHC) for Supersimmetry (SUSY), Extra Dimensions (ED), new Gauge Bosons and R-Hadrons are discussed. Beyond Standard-Model (BSM) searches at LHC require a…

High Energy Physics - Experiment · Physics 2011-11-10 Sebastiano Albergo

In view of the discovery of a new boson by the ATLAS and CMS Collaborations at the LHC, we present an update of the global Standard Model (SM) fit to electroweak precision data. Assuming the new particle to be the SM Higgs boson, all…

High Energy Physics - Phenomenology · Physics 2013-06-05 M. Baak , M. Goebel , J. Haller , A. Hoecker , D. Kennedy , R. Kogler , K. Moenig , M. Schott , J. Stelzer

We review the status of the phenomenology of light neutralinos in an effective Minimal Supersymmetric extension of the Standard Model (MSSM) at the electroweak scale, in light of new results obtained at the CERN Large Hadron Collider. First…

High Energy Physics - Phenomenology · Physics 2013-05-30 A. Bottino , N. Fornengo , S. Scopel

A number of LHC searches now display intriguing excesses. Most prominently, the measurement of the $W^+W^-$ cross-section has been consistently $\sim 20\%$ higher than the theoretical prediction across both ATLAS and CMS for both 7 and 8…

High Energy Physics - Phenomenology · Physics 2015-06-19 Jong Soo Kim , Krzysztof Rolbiecki , Kazuki Sakurai , Jamie Tattersall

The electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM) can account for a variety of experimental data. In particular, it can explain the persistent 3-4 sigma discrepancy between the experimental result for the…

High Energy Physics - Phenomenology · Physics 2021-12-22 Manimala Chakraborti , Sven Heinemeyer , Ipsita Saha

At LEP2 many Standard Model predictions are tested up to centre-of-mass energies of 209 GeV. Fermion pair production cross sections and asymmetries agree well with the theoretical expectation over the entire energy range. The measurements…

High Energy Physics - Experiment · Physics 2007-05-23 Stephan Wynhoff

An update of the electroweak measurements at LEP and SLC is presented. These measurements are used to perform precise tests of the Standard Model. A constraint on the Standard Model Higgs mass is obtained when the direct measurements of…

High Energy Physics - Experiment · Physics 2007-05-23 E. Tournefier

We update the electroweak study of the predictions of the Minimal Supersymmetric Standard Model (MSSM) including the recent results on the muon anomalous magnetic moment, the weak boson masses, and the final precision data on the Z boson…

High Energy Physics - Phenomenology · Physics 2015-05-27 Gi-Chol Cho , Kaoru Hagiwara , Yu Matsumoto , Daisuke Nomura

We investigate multilepton LHC signals arising from electroweak processes involving sleptons. We consider the framework of general gauge mediated supersymmetry breaking, focusing on models where the low mass region of the superpartner…

High Energy Physics - Phenomenology · Physics 2014-02-25 Jorgen D'Hondt , Karen De Causmaecker , Benjamin Fuks , Alberto Mariotti , Kentarou Mawatari , Christoffer Petersson , Diego Redigolo

We study vertex corrections to the leptonic electroweak observables in the general MSSM at tan(beta) < 35. In particular, we address the question of whether supersymmetry can be responsible for the observed 2 sigma deviation from the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Oleg Lebedev , Will Loinaz

This note presents a combination of published and preliminary electroweak results from the four LEP collaborations and the SLD collaboration which were prepared for the 2004 summer conferences. [...] The main changes with respect to the…

Searching for the Higgs boson is of first priority in LHC experiments. Once a Higgs candidate is found, we then need to know whether it is the standard model (SM) Higgs boson or a Higgs boson in new physics beyond the SM. So far we do not…

High Energy Physics - Phenomenology · Physics 2010-10-05 Yong-Hui Qi , Yu-Ping Kuang

We consider a Minimal Supersymmetric Standard Model scenario in which the only light superparticles are a bino-like dark matter candidate and a nearly-degenerate slepton. It is notoriously difficult to probe this scenario at the Large…

High Energy Physics - Phenomenology · Physics 2017-11-01 Bhaskar Dutta , Kebur Fantahun , Ashen Fernando , Tathagata Ghosh , Jason Kumar , Pearl Sandick , Patrick Stengel , Joel W. Walker

Using the chargino-neutralino and slepton search results from the LHC in conjunction with the WMAP/PLANCK and $(g-2)_{\mu}$ data, we constrain several generic pMSSM models with decoupled strongly interacting sparticles, heavier Higgs bosons…

High Energy Physics - Phenomenology · Physics 2014-07-07 Manimala Chakraborti , Utpal Chattopadhyay , Arghya Choudhury , Amitava Datta , Sujoy Poddar

The ATLAS and CMS experiments at the Large Hadron Collider (LHC) at CERN have searched for signals of new physics, in particular for supersymmetry. The data collected until 2012 at center-of-mass energies of 7 and 8 TeV and integrated…

High Energy Physics - Experiment · Physics 2016-09-07 Christian Autermann

We study regions in the parameter space of the NMSSM which are able to simultaneously explain the current measured values for the $W$ mass $M_W$ and the muon anomalous magnetic moment $a_\mu$, and provide a dark matter relic density…

High Energy Physics - Phenomenology · Physics 2022-12-05 Florian Domingo , Ulrich Ellwanger , Cyril Hugonie

The Standard Model (SM) of particle physics, comprised of the unified electro-weak (EW) and Quantum Chromodynamic (QCD) theories, accurately explains almost all experimental results related to the micro-world, and has made a number of…

High Energy Physics - Phenomenology · Physics 2021-03-01 Shenjian Chen , Stephen Lars Olsen