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We investigate source and detector non-standard neutrino interactions at the proposed ESS$\nu$SB experiment. We analyze the effect of non-standard physics at the probability level, the event-rate level and by a full computation of the…

High Energy Physics - Phenomenology · Physics 2015-09-29 Mattias Blennow , Sandhya Choubey , Tommy Ohlsson , Sushant K. Raut

Folded supersymmetry is a natural theory of the electroweak scale in which the scalar top partner responsible for canceling the ultraviolet sensitivity of the Higgs mass at one loop carries no color. As a result, bounds on naturalness on…

High Energy Physics - Phenomenology · Physics 2015-12-02 Gustavo Burdman , Raffaele Tito D'Agnolo

Despite being very successful in explaining the wide range of precision experimental results obtained so far, the Standard Model (SM) of elementary particles fails to address two of the greatest observations of the recent decades: tiny but…

High Energy Physics - Phenomenology · Physics 2010-11-19 Yasaman Farzan , Silvia Pascoli , Michael A. Schmidt

We investigate a scenario inspired by natural supersymmetry, where neutrino data is explained within a low-scale seesaw scenario. For this the Minimal Supersymmetric Standard Model is extended by adding light right-handed neutrinos and…

High Energy Physics - Phenomenology · Physics 2021-06-30 J. Masias , N. Cerna-Velazco , J. Jones-Perez , W. Porod

Most recent tests of the Standard Model of the electroweak interaction are reported using data from the four LEP experiments ALEPH, DELPHI, L3 and OPAL, the SLD experiment at SLC, the Tevatron ppbar experiments CDF and D0, and the NuTeV…

High Energy Physics - Experiment · Physics 2007-05-23 T. Kawamoto

This note presents constraints on Standard Model parameters using published and preliminary precision electroweak results measured at the electron-positron colliders LEP and SLC. The results are compared with precise electroweak…

Lepton universality, meaning the equal coupling of the electroweak gauge bosons to the different lepton flavours, is a central property of the Standard Model (SM). Tests of lepton universality in ratios of rates of $b\to s\ell^+\ell^-$…

High Energy Physics - Experiment · Physics 2023-05-19 Christoph Langenbruch

Slepton coannihilation is one of the most promising scenarios that can bring the predicted Dark Matter (DM) abundance in the the Minimal Supersymmetric Standard Model (MSSM) into agreement with the experimental observation. In this…

High Energy Physics - Phenomenology · Physics 2024-03-29 Manimala Chakraborti , Sven Heinemeyer , Ipsita Saha

We study the extension of the Standard Model (SM) with a light dilaton in a five dimensional warped model. In particular, we analyze the coupling of the dilaton with the SM matter fields, compare the model predictions with Electroweak…

High Energy Physics - Phenomenology · Physics 2016-09-08 Eugenio Megias , Giuliano Panico , Oriol Pujolas , Mariano Quiros

The CMS Open Data project offers new opportunities to measure cross sections of standard model (SM) processes which have not been probed so far. In this work, we evaluate the challenges and the opportunities of the CMS Open Data project in…

High Energy Physics - Experiment · Physics 2020-01-29 Aram Apyan , William Cuozzo , Markus Klute , Yoshihiro Saito , Matthias Schott , Bereket Sintayehu

There are two aspects to the 1995 summer update of the combined preliminary electroweak data from LEP and SLC. On the one hand, agreement between experiments and the Standard Model (SM) has improved for the line-shape and the asymmetry…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kaoru Hagiwara

Recently, we have witnessed two hints of physics beyond the standard model: A 3.3$\sigma$ local excess ($M_{A_0} = 52$ GeV) in the search for $H_0\to A_0 A_0\to b\bar{b}\mu^{+}\mu^{-}$ and a 4.2$\sigma$ deviation from the SM prediction in…

High Energy Physics - Phenomenology · Physics 2021-09-14 Chih-Ting Lu , Raymundo Ramos , Yue-Lin Sming Tsai

Heavy quark decays provide a very advantageous investigation to test the Standard Model (SM). Recently, promising experiments with \textit{b} quark, as well as the analysis of the huge data sets produced at the B factories, have led to an…

High Energy Physics - Phenomenology · Physics 2015-05-14 Wanwei Wu

There have been a great deal of works on the precision test of the standard model (SM) because of the incredibly precise data obtained at the LEP and the new measurements of $M_W$ and $m_t$ at the Fermilab Tevatron as well as the recent…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kyungsik Kang , Sin Kyu Kang

The LHCb collaboration has recently reported on some anomalies in $b\to s$ transitions. In addition to discrepancies with the Standard Model (SM) predictions in some angular observables and branching ratios, an intriguing hint for lepton…

High Energy Physics - Phenomenology · Physics 2015-03-31 D. Aristizabal Sierra , Florian Staub , Avelino Vicente

The supersymmetric particles (sparticles) belonging exclusively to the electroweak sector of the minimal supersymmetric standard model (MSSM) may hold the key to the observed dark matter relic density in the universe even if all strongly…

High Energy Physics - Phenomenology · Physics 2013-10-02 Arghya Choudhury , Amitava Datta

When the mass difference between the lightest slepton and the lightest neutralino is smaller than the tau mass, the lifetime of the lightest slepton in the constrained Minimal Supersymmetric Standard Model (MSSM) increases in many orders of…

High Energy Physics - Phenomenology · Physics 2009-07-22 S. Kaneko , J. Sato , T. Shimomura , O. Vives , M. Yamanaka

The simplest interpretation of the global success of the Standard Model is that new physics decouples well above the electroweak scale. Supersymmetric extension of the Standard Model offers the possibility of light chargino and the…

High Energy Physics - Phenomenology · Physics 2009-10-28 P. H. Chankowski , S. Pokorski

With the discovery of the Higgs boson, the spectrum of particles in the Standard Model (SM) is complete. It is more important than ever to perform precision measurements and to test for deviations from SM predictions in the electroweak…

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 2002 summer conferences. Averages from Z resonance results are derived…