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We consider large-angle two photon production in $e^+ e^-$ annihilation as a possible process to monitor the luminosity of a future $e^+ e^-$ circular collider (FCC-ee). We review and assess the status of the theoretical accuracy by…

High Energy Physics - Phenomenology · Physics 2019-10-02 Carlo M. Carloni Calame , Mauro Chiesa , Guido Montagna , Oreste Nicrosini , Fulvio Piccinini

We present the results of a complete analysis of the one loop electroweak corrections to $e^-e^+\to\gamma\gamma, ~Z\gamma, ~ZZ$ in the Standard (SM) and the Minimal Supersymmetric Standard Model (MSSM). A special emphasis is put on the high…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. J. Gounaris , J. Layssac , F. M. Renard

Parity-violating Moller scattering measurements are a powerful probe of new physics effects, and the upcoming high-precision experiments will require a new level of accuracy for electroweak radiative corrections (EWC). First, we perform the…

High Energy Physics - Phenomenology · Physics 2012-08-31 A. Aleksejevs , S. Barkanova , Y. Kolomensky , E. Kuraev , V. Zykunov

Precise predictions for an $e^+e^-\rightarrow t\bar{t}$ cross section are presented at an energy region from 400 GeV to 800 GeV. Cross sections are estimated including the beam-polarization effects with full $\mathcal{O}(\alpha)$, and also…

High Energy Physics - Phenomenology · Physics 2019-07-24 Junpei Fujimoto , Yoshimasa Kurihara , Nhi M. U. Quach

We provide high-precision predictions for muon-pair and tau-pair productions in a photon-photon collision by considering a complete set of one-loop-level scattering amplitudes, i.e., electroweak (EW) corrections together with soft and hard…

High Energy Physics - Phenomenology · Physics 2021-06-10 Mehmet Demirci , M. Fauzi Mustamin

We compute the full one-loop Electro-Weak (EW) contributions of O(alpha_S alpha_EM^3) entering the electron-positron into a quark-antiquark pair plus one gluon cross section at the Z peak and LC energies in presence of polarisation of the…

High Energy Physics - Phenomenology · Physics 2009-03-04 C. M. Carloni Calame , S. Moretti , F. Piccinini , D. A. Ross

We study the impact of the full ${\cal O}(\alpha_{s})$ QCD and ${\cal O}(\alpha_{ew})$ electroweak (EW) radiative corrections to the $e^+e^- \to t \bar t Z^0$ process in the standard model (SM), and investigate the dependence of the…

High Energy Physics - Phenomenology · Physics 2014-11-18 Dai Lei , Ma Wen-Gan , Zhang Ren-You , Guo Lei , Wang Shao-Ming

The first stage of the FCC (Future Circular Collider) is a high-luminosity electron-positron collider (FCC-ee) with centre-of-mass energy ranging from 88 to 365 GeV, to study with high precision the Z, W, Higgs and top particles, with…

We present the electroweak one-loop corrections to the processes e+e- -> f bar-f, f = tau, c, b, t, at energies relevant for a future linear collider. The results of two independent calculations are compared and agreement is found at a…

High Energy Physics - Phenomenology · Physics 2007-05-23 T. Hahn , W. Hollik , A. Lorca , T. Riemann , A. Werthenbach

Radiative corrections to the neutral current Drell--Yan-like processes are considered. Complete one-loop electroweak corrections are calculated within the SANC system. Theoretical uncertainties are discussed. Numerical results are presented…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Arbuzov , D. Bardin , S. Bondarenko , P. Christova , L. Kalinovskaya , G. Nanava , R. Sadykov

Using two different approaches, we perform updated and detailed calculations of the complete one-loop (Next-to-Leading Order (NLO)) set of electroweak radiative corrections to the parity violating e- e- -> e- e- (gamma) scattering…

High Energy Physics - Phenomenology · Physics 2011-08-18 A. Aleksejevs , S. Barkanova , A. Ilyichev , Y. Kolomensky , V. Zykunov

The full $\mathcal{O}(\alpha)$ electroweak radiative corrections to $t \bar{t} \gamma$ and $e^-e^+\gamma$ productions at the International Linear Collider (ILC) are presented in this paper. The computation is performed with the help of…

High Energy Physics - Phenomenology · Physics 2014-03-27 P. H. Khiem , Y. Kurihara , J. Fujimoto , M. Igarashi , T. Ishikawa , T. Kaneko , K. Kato , N. Nakazawa , Y. Shimizu , K. Tobimatsu , T. Ueda , J. A. M. Vermaseren , Y. Yasui

We present results for the complete one-loop electroweak logarithmic corrections for general processes at high energies and fixed angles. Our results are applicable to arbitrary matrix elements that are not mass-suppressed. We give explicit…

High Energy Physics - Phenomenology · Physics 2011-09-13 Ansgar Denner , Stefano Pozzorini

We have calculated the electroweak radiative corrections at the O(alpha) level to the three channels of the process f_1 bar-f_1 Z A --> 0 and implemented them into the SANC system. Here A stands for the photon and f_1 for a first generation…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. Bardin , S. Bondarenko , L. Kalinovskaya , G. Nanava , L. Rumyantsev , W. von Schlippe

The cross-section for W^+W^- \to W^+W^- with arbitrarily polarized W bosons is calculated within the Electroweak Standard Model including the complete virtual and soft-photonic O(alpha) corrections. We show the numerical importance of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Denner , T. Hahn

The prospects for electroweak precision measurements at the Future Circular Collider with electron-positron beams (FCC-ee) are discussed. The Z mass and width, as well as the value of the electroweak mixing angle, can be measured with very…

High Energy Physics - Experiment · Physics 2014-12-10 Roberto Tenchini

This PhD thesis is concerned with one-loop virtual electroweak corrections to arbitrary processes in the high-energy limit. Complete results are presented for the leading and subleading logarithms of large ratios of energy scales to mass…

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefano Pozzorini

Electroweak radiative corrections will play a major role in the analysis of several upcoming ultra-precision experiments such as Belle-II, so is crucial to make sure that they are fully under control. The article outlines the recent…

High Energy Physics - Phenomenology · Physics 2017-03-23 A. G. Aleksejevs , S. G. Barkanova , Yu. M. Bystritskiy , V. A. Zykunov

In this paper we present the results from a calculation of the full electroweak one-loop corrections for $\gamma Z$ vector-boson pair production at hadron colliders. The cases of proton--antiproton as well as proton--proton collisions, at…

High Energy Physics - Phenomenology · Physics 2010-04-05 W. Hollik , C. Meier

We describe the salient features of precise predictions for the processes e+ e- -> WW -> 4f(gamma) as obtained with the Monte Carlo generator RacoonWW, including the complete O(alpha) electroweak radiative corrections in the double-pole…

High Energy Physics - Phenomenology · Physics 2009-11-07 A. Denner , S. Dittmaier , M. Roth , D. Wackeroth