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We consider the region of small transverse momenta in the production of high-mass systems in hadronic collisions. By using the current knowledge on the infrared behaviour of tree-level and one-loop QCD amplitudes at O(alpha_s^2), we…

High Energy Physics - Phenomenology · Physics 2009-11-07 D. de Florian , M. Grazzini

We construct models in which electroweak symmetry is spontaneously broken by supersymmetric strong dynamics at the TeV scale. The order parameter is a composite of scalars, and the longitudinal components of the W and Z are strongly-coupled…

High Energy Physics - Phenomenology · Physics 2019-08-17 Markus A. Luty , John Terning , Aaron K. Grant

We calculate the two-loop QCD correction to the scalar quark contributions to the electroweak gauge-boson self-energies at zero momentum-transfer in the supersymmetric extension of the Standard Model. We then derive the $O(\alpha_s)$…

High Energy Physics - Phenomenology · Physics 2009-07-09 A. Djouadi , P. Gambino , S. Heinemeyer , W. Hollik , C. Jünger , G. Weiglein

Recent developments in the field of complete electroweak tree-level calculations for six-fermion final states in e+ e- collisions are briefly reviewed. Particular attention is given to top-quark and Higgs boson physics, which are items of…

High Energy Physics - Phenomenology · Physics 2009-10-31 F. Piccinini

We review the renormalization of the electroweak sector of the standard model. The derivation also applies to the minimal supersymmetric standard model. We discuss regularization and the relation between the threshold corrections and the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Damien M. Pierce

We calculate the $O(\alpha_{ew}m_{t(b)}^{2}/m_{W}^{2})$ and $O(\alpha_{ew} m_{t(b)}^4/m_W^4)$ supersymmetric electroweak corrections to the cross section for the charged Higgs boson production in association with a top quark at the Tevatron…

High Energy Physics - Phenomenology · Physics 2009-10-31 Li Gang Jin , Chong Sheng Li , Robert J. Oakes , Shou Hua Zhu

The lowest order radiative corrections to the cross section and asymmetries measured in experiments on semi-inclusive deep inelastic scattering of polarized particles were calculated. Both exact and leading log expressions were presented…

High Energy Physics - Phenomenology · Physics 2023-10-30 I. Akushevich , H. Avakian , A. Ilyichev , S. Srednyak

We calculate the standard model predictions for top quark pair production and decay into six fermions at a linear e+ e- collider. We include the factorizable electroweak O(alpha) corrections in the pole approximation and QED corrections due…

High Energy Physics - Phenomenology · Physics 2009-01-07 Karol Kolodziej , Adam Staron , Alejandro Lorca , Tord Riemann

The recently completed calculation of the full electroweak O(alpha) corrections to the charged-current four-fermion production processes e+e- --> nu_tau tau+ mu- anti-nu_mu, u anti-d mu- anti-nu_mu, and u anti-d s anti-c is briefly…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Denner , S. Dittmaier , M. Roth , L. H. Wieders

In this manuscript, we present a complete study of the Sudakov double logarithms resummation for various hard processes in eA and pA collisions in the small-x saturation formalism. We first employ a couple of slightly different formalisms…

High Energy Physics - Phenomenology · Physics 2013-12-16 A. H. Mueller , Bo-Wen Xiao , Feng Yuan

We discuss the full electroweak one-loop corrections to the decay of the pseudoscalar Higgs boson A^0 into two sfermions within the Minimal Supersymmetric Standard Model. In particular, we consider the sfermions of the third generation,…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Weber , H. Eberl , W. Majerotto

Taking into account the mixing effects between left- and right-handed top-squarks, we calculate the genuine supersymmetric eletroweak correction to top quark production at the Tevatron in the minimal supersymmetric model. The analytic…

High Energy Physics - Phenomenology · Physics 2016-08-24 Jin Min Yang , Chong Sheng Li

In this summary report of the 2001 Snowmass Electroweak Symmetry Breaking Working Group, the main candidates for theories of electroweak symmetry breaking are surveyed, and the criteria for distinguishing among the different approaches are…

High Energy Physics - Phenomenology · Physics 2008-11-26 Marcela Carena , David W. Gerdes , Howard E. Haber , Andre S. Turcot , Peter M. Zerwas

Supersymmetric QCD corrections to top quark pair production by photon fusion are calculated in the minimal supersymmetric standard model taking into account of the effects of stops in the corrections to the total cross-section of t anti-t…

High Energy Physics - Phenomenology · Physics 2009-10-28 Hua Wang , Chong-Sheng Li , Hong-Yi Zhou , Yu-Ping Kuang

We present a fully automated implementation of next-to-leading order electroweak (NLO EW) corrections in the logarithmic approximation in OpenLoops. For energies above the electroweak scale NLO EW corrections are logarithmically enhanced…

High Energy Physics - Phenomenology · Physics 2025-04-15 Jonas M. Lindert , Lorenzo Mai

We present a new class of models that stabilize the weak scale against radiative corrections up to scales of order 5 TeV without large corrections to precision electroweak observables. In these `folded supersymmetric' theories the one loop…

High Energy Physics - Phenomenology · Physics 2010-10-27 Gustavo Burdman , Z. Chacko , Hock-Seng Goh , Roni Harnik

The renormalization of the Minimal Supersymmetric Standard Model of electroweak interactions is presented to all orders of perturbation theory using the algebraic method. Special attention is directed to the issues of soft supersymmetry…

High Energy Physics - Phenomenology · Physics 2010-04-05 Wolfgang Hollik , Elisabeth Kraus , Markus Roth , Christian Rupp , Klaus Sibold , Dominik Stöckinger

Radiative one-loop corrections to fermion pair production in $e^+e^-$ annihilation are calculated in the Minimal Supersymmetric Standard Model (MSSM). The size of the non-standard corrections is discussed for the process e^+e^- to mu^+mu^-…

High Energy Physics - Phenomenology · Physics 2009-10-31 W. Hollik , C. Schappacher

Presented are complete electroweak (EW) corrections at ${\cal O}(\alpha\alpha_{\mathrm s}^{\mathrm 2})$ to top-squark pair production at the Large Hadron Collider (LHC) within the framework of the Minimal Supersymmetric Standard Model…

High Energy Physics - Phenomenology · Physics 2007-10-15 Wolfgang Hollik , Monika Kollar , Maike K. Trenkel

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