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Related papers: Precision calculation for e+ e- -> 2f: the KK MC p…

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We discuss recent theoretical results for the complete mixed QCD-EW corrections to lepton-pair production via the Drell-Yan mechanism, a cornerstone process for the precision physics programme at the LHC. We present results for fiducial…

High Energy Physics - Phenomenology · Physics 2021-11-02 Luca Buonocore

We present recent developments in the application of exact amplitude-based resummation methods in the confrontation between precision theory and recent experimental results. As a consequence, we argue that these methods open the way to 1\%…

High Energy Physics - Phenomenology · Physics 2016-03-09 B. F. L. Ward , A. Mukhopadhyay

The next generation of $e^+e^-$ colliders will offer a possibility of clean testing of QCD dynamics. Recent progress in the theoretical description of exclusive processes permits for many of them a consistent use of the perturbative QCD…

High Energy Physics - Phenomenology · Physics 2016-09-06 B. Pire , L. Szymanowski , S. Wallon

In this paper, we present a novel methodology to perform Bayesian inference for Cox processes in which the intensity function is driven by a diffusion process. The novelty lies in the fact that no discretization error is involved, despite…

Methodology · Statistics 2023-06-06 Flavio B. Gonçalves , Krzysztof G. Łatuszyński , Gareth O. Roberts

We realize, by Monte Carlo event generator methods, the exact O}(\alpha)$ YFS exponentiated calculation of $e^+e^- \to W^+ W^- (\to f_1\bar f'_1 + \bar f_2 f'_2)$ at and beyond LEP2 energies, where the left-handed parts of $f_i$ and $f'_i$…

High Energy Physics - Phenomenology · Physics 2009-10-30 S. Jadach , W. Placzek , M. Skrzypek , B. F. L. Ward , Z. Was

We classify the possible deviations from the Standard Model in the QED-dominated $\mathrm{e^+e^-}\rightarrow\gamma\gamma$ process under the assumption of a preserved $SU(2)_L \times U(1)_Y$ symmetry. We find that the only deviations really…

High Energy Physics - Phenomenology · Physics 2022-06-16 J. Alcaraz Maestre

We present two things in this discussion. First, we develop and prove the theory of the extension of the YFS Monte Carlo approach to higher order SU_{2L} x U_1 radiative corrections to the analogous higher order QCD radiative corrections.…

High Energy Physics - Phenomenology · Physics 2009-09-29 B. F. L. Ward , S. Jadach

We study predictions for the reaction $e^+e^- \to {\bar \nu} \nu (n \gamma)$. The complete one-loop corrections are taken into account and higher order contributions, in particular those for the observed real photons, are added whenever…

High Energy Physics - Phenomenology · Physics 2011-09-13 D. Bardin , S. Jadach , T. Riemann , Z. Was

We describe a new semi-analytical program, KKhhFoam, which provides a simplified framework for testing the amplitude-level exponentiation scheme (CEEX) of the full KKMChh program in the semi-soft limit. The structure of the KKhhFoam…

High Energy Physics - Phenomenology · Physics 2022-06-22 S. A. Yost , M. Dittrich , S. Jadach , Z. Wąs , B. F. L. Ward

This is a pedagogical and self-contained review on obtaining electroweak precision constraints on TeV scale new physics using the effective theory method. We identify a set of relevant effective operators in the standard model and calculate…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhenyu Han

The status of predictions for four-fermion production at e-e+ colliders is reviewed with an emphasis on the developments after the LEP2 era and an outlook to the challenges posed by the precision program at future colliders.

High Energy Physics - Phenomenology · Physics 2015-12-18 Christian Schwinn

We present the theoretical basis and sample Monte Carlo data for the YFS exponentiated calculation of $e^+e^- \to Z Z \to f_1\bar f_1 + \bar f_2 f_2$ at and beyond LEP2 energies, where the left-handed part of $f_i$ is a component of an…

High Energy Physics - Phenomenology · Physics 2009-10-30 S. Jadach , W. Placzek , B. F. L. Ward

We present an improvement of the MC event generator Herwiri2, where we recall the latter MC was a prototype for the inclusion of CEEX resummed EW corrections in hadron-hadron scattering at high cms energies. In this improvement the new…

High Energy Physics - Phenomenology · Physics 2016-10-12 S. Jadach , B. F. L. Ward , Z. A. Was , S. A. Yost

Since the {\tt KKMC} program was published for the first time over 20 years ago, it has gained popularity and was exploited in a broad spectrum of applications. The core part of the program itself did not change much. In contrast, some of…

High Energy Physics - Phenomenology · Physics 2021-01-27 A. Arbuzov , S. Jadach , Z. Wąs , B. F. L. Ward , S. A. Yost

We discuss the current status of LHC physics from the perspective of precision theory predictions for the attendant QCD and EW higher order corrections. We focus on the interplay between the available data and the predictions for these data…

High Energy Physics - Phenomenology · Physics 2015-06-19 B. F. L. Ward

We present the exact O(alpha) correction to the process e+ e- -> f f-bar + gamma, f neq e, for ISR oplus FSR at and beyond LEP2 energies. We give explicit formulas for the completely differential cross section. As an important application,…

High Energy Physics - Phenomenology · Physics 2009-11-07 S. Jadach , M. Melles , B. F. L. Ward , S. A. Yost

The {\tt SANC} computer system is aimed at support of analytic and numeric calculations for experiments at colliders. The system is reviewed briefly. Recent results on high-precision description of the Drell-Yan processes at the LHC are…

High Energy Physics - Phenomenology · Physics 2015-06-17 R. Sadykov , A. Arbuzov , D. Bardin , S. Bondarenko , P. Christova , L. Kalinovskaya , V. Kolesnikov , A. Sapronov , E. Uglov

Using the theorem of residues Chiarella and Reichel derived a series that can be represented in terms of the complex error function (CEF). Here we show a simple derivation of this CEF series by Fourier expansion of the exponential function…

General Mathematics · Mathematics 2012-08-13 S. M. Abrarov , B. M. Quine , R. K. Jagpal

In this talk I present the current status of the family of Monte Carlo programs for four-fermion physics based on the Yennie-Frautschie-Suura resummation of soft real and virtual photons. I focus on their applications to LEP2.

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Skrzypek , S. Jadach , W. Placzek , B. F. L. Ward , Z. Was