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Electroweak corrections to longitudinal gauge and Higgs boson scattering amplitudes are calculated. Due to Sudakov double logarithms, the effect is a suppression of amplitude that grows rapidly with increasing center of mass energy leading…

High Energy Physics - Phenomenology · Physics 2015-06-04 Grigory Ovanesyan

In these lectures, I review the status of the electroweak sector of the Standard Model, with an emphasis on the importance of radiative corrections and searches for the Standard Model Higgs boson. A discussion of the special role of the TeV…

High Energy Physics - Phenomenology · Physics 2009-04-24 S. Dawson

In these lectures we give a discussion of the structure of the electroweak standard model and its quantum corrections for tests of the electroweak theory. The predictions for the vector boson masses, neutrino scattering cross sections and…

High Energy Physics - Phenomenology · Physics 2007-05-23 W. Hollik

Collider measurements on electroweak physics are summarised. Although the precision on some observables is very high, no deviation from the Standard Model of electroweak interactions is observed. The data allow to set stringent limits on…

High Energy Physics - Experiment · Physics 2008-11-26 Klaus Moenig

We consider the possibility of observing deviations from the Standard Model gauge-boson self-couplings at a future $500$~GeV $e^+ e^-$ linear collider. We concentrate on the case in which the electroweak symmetry breaking sector is strongly…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. A. Likhoded , T. Han , G. Valencia

For superpartner masses not much heavier than the weak scale $M=M_{\rm W}$, large logarithmic corrections of the Sudakov type arise at TeV energies. In this paper we summarize recent results of supersymmetric (susy) electroweak radiative…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Beccaria , M. Melles , F. M. Renard , C. Verzegnassi

Recent anomalies in cosmic rays data, namely from the PAMELA collaboration, can be interpreted in terms of TeV scale decaying/annihilating Dark Matter. We analyze the impact of radiative corrections coming from the electroweak sector of the…

High Energy Physics - Phenomenology · Physics 2010-09-13 Paolo Ciafaloni , Alfredo Urbano

We consider various processes of single top production at LHC in the theoretical framework of the MSSM and examine the role of the supersymmetric electroweak one-loop corrections in a special moderately light SUSY scenario, in an initial…

High Energy Physics - Phenomenology · Physics 2008-11-26 Matteo Beccaria , Fernand M. Renard , Claudio Verzegnassi

In $e^+e^-$ collisions, transverse beam polarization can be a useful tool in studying the properties of particles associated with new physics beyond the Standard Model(SM). However, unlike in the case of measurements associated with…

High Energy Physics - Phenomenology · Physics 2011-01-04 Thomas G. Rizzo

Some versions of the electroweak SU(3)$_L\otimesU(1)_X$ models cannot be treated within perturbation theory at energies of few TeV. An extended version for these models is proposed which is perturbative even at TeV scale posing no…

High Energy Physics - Phenomenology · Physics 2009-11-10 Alex G. Dias

We calculate the complete electroweak O(alpha) corrections to pp, pbar p -> l+l- X (l=e, mu) in the Standard Model of electroweak interactions. They comprise weak and photonic virtual one-loop corrections as well as real photon radiation to…

High Energy Physics - Phenomenology · Physics 2010-04-06 U. Baur , O. Brein , W. Hollik , C. Schappacher , D. Wackeroth

We explore the usefulness of very energetic linear $e^+e^-$ colliders in the $TeV$ range in studying an alternative scheme of electroweak symmetry breaking based on a strong interacting sector. The calculations are performed within the BESS…

High Energy Physics - Phenomenology · Physics 2009-10-22 R. Casalbuoni , P. Chiappetta , A. Deandrea , S. De Curtis , D. Dominici , R. Gatto

A theoretical description of elastic polarized muon-electron scattering is presented. Complete one-loop electroweak radiative corrections are calculated with taking into account the exact dependence on the muon mass. The effects due to some…

High Energy Physics - Phenomenology · Physics 2022-03-14 A. B. Arbuzov , S. G. Bondarenko , L. V. Kalinovskaya , L. A. Rumyantsev , V. L. Yermolchyk

The cross-section for $\gamma\gamma\to t \bar t$ with arbitrary polarized photons is calculated within the electroweak Standard Model including the complete virtual and soft-photonic $O(\alpha)$ corrections. We present a detailed numerical…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Denner , S. Dittmaier , M. Strobel

Electroweak dipole operators in the Standard Model Effective Field Theory (SMEFT) are important indirect probes of quantum effects of new physics beyond the Standard Model (SM), yet they remain poorly constrained by current experimental…

High Energy Physics - Phenomenology · Physics 2023-11-16 Xin-Kai Wen , Bin Yan , Zhite Yu , C. -P. Yuan

Beam polarization at e^+e^- linear colliders will be a powerful tool for high precision analyses. In this paper we summarize the polarization-related results for Higgs and electroweak physics, QCD, Supersymmetry and alternative theories…

High Energy Physics - Phenomenology · Physics 2011-01-13 Gudrid Moortgat--Pick

We consider phenomenological implications of a model recently proposed for the electroweak interactions based on a SU(2)_L confining theory. We concentrate on the production of excited states of the electroweak bosons at future colliders…

High Energy Physics - Phenomenology · Physics 2009-11-07 Xavier Calmet , Harald Fritzsch

We consider an extension of the standard electroweak theory with gauge group $SU(2)_L \times SU(2)_R \times U(1)_{\tilde{Y}}$, where the gauge bosons of the extra $SU(2)_R$ factor do not couple to ordinary fermions. We show that precision…

High Energy Physics - Phenomenology · Physics 2009-10-30 A. Donini , F. Feruglio , J. Matias , F. Zwirner

The electroweak corrections at the order of $O(\alpha_{ew}m_{t(b)}^2/m_W^2)$ to the partial widths of the $\tilde{t}_2 \to \tilde{g} + t$ and $\tilde{g} \to \tilde{t}_1 + \bar{t} $ decays (depending on the masses of the particles involved)…

High Energy Physics - Phenomenology · Physics 2015-06-25 Hou Hong-Sheng , Ma Wen-Gan , Wan Lang-Hui , Zhang Ren-You

In this addendum to Phys. Rev. D 88, no. 1, 013009 (2013), we give results for the electroweak Sudakov corrections in gauge-boson production at large transverse momentum p_T at proton colliders. In order for the results to be easily usable,…

High Energy Physics - Phenomenology · Physics 2015-10-28 Thomas Becher , Xavier Garcia i Tormo