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KKMC-hh is a precision event-generator for Z production and decay in hadronic collisions, which applies amplitude-level exponentiation to both initial and final state photon radiation, including perturbative residuals through order…

High Energy Physics - Phenomenology · Physics 2018-02-06 S. A. Yost , S. Jadach , B. F. L. Ward , Z. Was

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

KKMC-hh is a hadronic event generator for Z boson production and decays, which includes exponentiated multi-photon radiation and first-order electroweak corrections. We have used KKMC-hh to investigate the role of initial sate radiation…

High Energy Physics - Phenomenology · Physics 2020-03-02 S. Yost , S. Jadach , B. F. L. Ward , Z. Was

With an eye toward the precision physics of the LHC, such as the recent measurement of $M_W$ by the ATLAS Collaboration, we present here systematic studies relevant to the assessment of the expected size of multiple photon radiative effects…

High Energy Physics - Phenomenology · Physics 2019-05-08 S. Jadach , B. F. L. Ward , Z. A. Was , S. A. Yost

We describe the program KKMC-hh, which calculates Z boson processes in hadronic collisions using coherent exclusive exponentiation (CEEX) with exact second-order photonic corrections at next-to-leading log and first-order weak vertex…

High Energy Physics - Phenomenology · Physics 2021-01-27 Scott A. Yost , Matthew Dittrich , Stanislaw Jadach , B. F. L. Ward , Zbigniew Wąs

We present the Monte Carlo event generator KK version 4.13 for precision predictions of the Electroweak Standard Model for the process $e^+e^-\to f\bar{f} +n\gamma$, $f=\mu,\tau,d,u,s,c,b$ at centre of mass energies from $\tau$ lepton…

High Energy Physics - Phenomenology · Physics 2010-11-24 S. Jadach , B. F. L. Ward , Z. Was

Precision studies of single W and Z production processes at hadron colliders require progress in the calculation of electroweak radiative corrections. To this end, higher-order QED corrections to the neutral-current Drell-Yan process, due…

High Energy Physics - Phenomenology · Physics 2011-07-19 Carlo Michel Carloni Calame , Guido Montagna , Oreste Nicrosini , Michele Treccani

KKMChh is a precision Monte Carlo program for photonic and electroweak radiative corrections to hadron scattering, implementing the amplitude-level exponentiation originally developed for electron-positron scattering at the quark level,…

High Energy Physics - Phenomenology · Physics 2025-01-06 Scott A. Yost , B. F. L. Ward , Zbigniew Wąs

We present a detailed study of the production of a high transverse-momentum lepton pair at hadron colliders, which includes the exact O(alpha) electroweak corrections properly matched with leading logarithmic effects due to multiple photon…

High Energy Physics - Phenomenology · Physics 2009-04-17 C. M. Carloni Calame , G. Montagna , O. Nicrosini , A. Vicini

We present the {\tt KKMCee 5.00.2} Monte Carlo event generator for lepton and quark pair production for the high energy electron-positron annihilation process. It is still the most sophisticated event generator for such processes. Its…

High Energy Physics - Phenomenology · Physics 2023-02-03 S. Jadach , B. F. L. Ward , Z. Was , S. A. Yost , A. Siodmok

The precision measurement of the mass of the $W$ boson is an important goal of the Fermilab Tevatron and the CERN Large Hadron Collider (LHC). It requires accurate theoretical calculations which incorporate both higher-order QCD and…

High Energy Physics - Phenomenology · Physics 2013-05-30 C. Bernaciak , D. Wackeroth

We present a complete calculation of the electroweak O(alpha^3 alpha_s) corrections to three-jet production and related event-shape observables at electron--positron colliders. The Z-boson resonance is described within the complex-mass…

High Energy Physics - Phenomenology · Physics 2014-11-20 Ansgar Denner , Stefan Dittmaier , Thomas Gehrmann , Christian Kurz

We present the Monte Carlo event generator {\tt WOPPER} for pair production of $W$'s and their decays at high energy $e^+e^-$ colliders. {\tt WOPPER} includes the effects from finite $W$ width and focusses on the calculation of higher order…

High Energy Physics - Phenomenology · Physics 2009-10-22 H. Anlauf , H. D. Dahmen , P. Manakos , T. Mannel , WOPPER

A new Monte Carlo event generator for wide angle Bhabha scattering and muon pair production in $e^+e^-$ collisions is described. The program includes complete one-loop electroweak corrections, and QED radiative corrections. The O($\alpha$)…

High Energy Physics - Phenomenology · Physics 2011-07-19 J. H. Field , T. Riemann

We present the Monte Carlo event generator YFSWW3 version 1.16 for theprocess of W-pair production and decay in electron-positron collisions. It includes ${\cal O}(\alpha)$ electroweak radiative corrections in the WW production stage…

High Energy Physics - Phenomenology · Physics 2010-04-06 S. Jadach , W. Placzek , M. Skrzypek , B. F. L. Ward , Z. Was

We present a Monte Carlo event generator specifically developed for the study of hadronic two-photon fusion events in two-photon scattering at electron-positron colliders. The code enables the generation of events with exact leading-order…

High Energy Physics - Phenomenology · Physics 2025-11-18 Max Lellmann , Igor Danilkin , Achim Denig , Jan Muskalla , Christoph F. Redmer , Xiu-Lei Ren , Marc Vanderhaeghen

A generator with $\alpha^2$ order radiative correction effects, including both the initial state radiative corrections and the photon vacuum polarization corrections, is built for the full simulation of $e^+e^- \to hadrons $ in cross…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. Zhang , R. Gang , J. C. Chen

We consider associated $Zh$ production with $Z \to \ell^+ \ell^-$ and $h \to b \bar b$ decays in hadronic collisions. In the framework of the Standard Model effective field theory (SMEFT) we calculate the QCD corrections to this process and…

High Energy Physics - Phenomenology · Physics 2022-07-11 Ulrich Haisch , Darren J. Scott , Marius Wiesemann , Giulia Zanderighi , Silvia Zanoli

KKMChh adapts the CEEX (Coherent Exclusive Exponentiation) formalism of the Monte Carlo Program KKMC for Z boson production and decay to hadron scattering. Amplitude-level soft photon exponentiation of initial and final state radiation,…

High Energy Physics - Phenomenology · Physics 2022-12-02 S. A. Yost , S. Jadach , B. F. L. Ward , Z. Wąs

We calculate the MSSM $O(\alpha)$ corrections to the main production processes of strong top pair production at the upgraded Tevatron and at the LHC. In exploring the potential of future hadron colliders for performing electroweak precision…

High Energy Physics - Phenomenology · Physics 2007-05-23 W. Hollik , C. Kao , W. M. Moesle , D. Wackeroth
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