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124 papers · 1 filter
Recent Developments in IR-Improved Amplitude-Based Resummation in Precision High Energy Collider Physics
B. F. L. Ward, S. Jadach, W. Placzek +4
We present recent developments in precision high energy collider physics based on the IR-improvement of unintegrable singularities in the infrared regime via amplitude-based resumm…
Bhabha scattering at future colliders with BHLUMI/BHWIDE
Wiesław Płaczek, Maciej Skrzypek, Bennie F. L. Ward +1
In this paper, we briefly present the Monte Carlo event generators BHLUMI and BHWIDE for small and large angle Bhabha scattering, respectively, and discuss possible ways of their i…
Amplitude-Based IR-Improvement in Precision LHCFCC Physics
B. F. L. Ward, S. Jadach, W. Placzek +3
We present recent results based on the IR-improvement of unintegrable singularities in the infrared regime via amplitude-based resummation in $QED \times QCD \subset SU(2)_L \times…
KKMCee: Multi-photon MC for lepton and quark pair production at lepton colliders
Scott A. Yost, Stanisław Jadach, B. F. L. Ward +2
We present an overview of the Monte Carlo event generator KKMCee for lepton and quark pair production in the high energy electron-positron annihilation process. We note that it is…
Collinearly Enhanced YFS MC Approach to Precision High Energy Collider Physics
B. F. L. Ward, S. Jadach, Z. Was
We improve the YFS IR resummation theory so that it includes all of the attendant collinear contributions which exponentiate. The attendant new resummed contributions are shown to…
Outlook for the Theoretical Precision of the Luminosity at Future Lepton Colliders
B. F. L. Ward, S. Jadach, W. Placzek +2
The LEP precision physics requirements on the theoretical precision tag for the respective luminosity were () at , where the former (latter) LEP result has…
YFS Exponentiation -- Gate to Precision Accelerator Physics Experiments
B. F. L. Ward
We present the history and current status of the YFS Monte Carlo approach to precision theory for accelerator physics experiments. Key contributions of Prof. Stanislaw Jadach are h…
Energy-scaling behavior of intrinsic transverse momentum parameters in Drell-Yan simulation
CMS Collaboration
An analysis is presented based on models of the intrinsic transverse momentum (intrinsic ) of partons in nucleons by studying the dilepton transverse momentum in Drel…
New Results from IR-Improved Amplitude-Based Resummation in Quantum Field Theory
B. F. L. Ward, S. Jadach, W. Placzek +3
There is a continuing effort to support and prepare the precision physics programs for the present and planned future colliders such as HL-LHC, FCC, CLIC, CEPC, and CPPC. We discus…
Collinearly Enhanced Realizations of the YFS MC Approach to Precision Resummation Theory
S. Jadach, B. F. L. Ward, Z. A. Was
We extend the YFS IR resummation theory to include all of the attendant collinear contributions which exponentiate. This improves the original YFS formulation in which only a part…
KKMChh: matching CEEX photonic ISR to a QED-corrected parton shower
S. A. Yost, S. Jadach, B. F. L. Ward +1
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 pho…
Overview of IR-Improvement in Precision LHC/FCC Physics
S. A. Yost, Y. Liu, B. Shakerin +1
We present an overview of the use of IR-improvement of unintegrable singularities in the infrared regime via amplitude-based resummation in $\sub…
Overview of theoretical precision of the luminosity at future electron-positron colliders
B. F. L. Ward, S. Jadach, W. Placzek +2
For both the FCC-ee and the ILC, to exploit properly the respective precision physics program, the theoretical precision tag on the respective luminosity will need to be improved f…
Multi-photon Monte Carlo event generator KKMCee for lepton and quark pair production in lepton colliders
S. Jadach, B. F. L. Ward, Z. Was +2
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…
New Developments in KKMChh: Quark-Level Exponentiated Radiative Corrections and Semi-analytical Results
S. A. Yost, M. Dittrich, S. Jadach +2
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 i…
IR-Improved Amplitude-Based Resummation in Quantum Field Theory: New Results and New Issues
B. F. L. Ward, S. Jadach, W. Placzek +3
With the advancement of strategies for the precision physics programs for the HL-LHC, FCC-ee, FCC-hh, ILC, CLIC, CEPC, and CPPC, the need for proper control of the attendant theore…
New Results For the Five Point Function
Yang Liu, Bennie F. L. Ward
We present the new results of the computed general five-point functionby the magic spinor product method in loop integrals proposed by one (BFLW) of us. The result from the magic s…
On the wall velocity dependence of electroweak baryogenesis
Glauber C. Dorsch, Stephan J. Huber, Thomas Konstandin
We re-evaluate the status of supersonic electroweak baryogenesis using a generalized fluid Ansatz for the non-equilibrium distribution functions. Instead of truncating the expansio…
Overview of the Path to 0.01 Theoretical Luminosity Precision for the FCCee and Its Possible Synergistic Effects for Other FCC Precision Theory Requirements
B. F. L. Ward, S. Jadach, W. Placzek +2
To exploit properly the precision physics program at the FCC-ee, the theoretical precision tag on the respective luminosity will need to be improved from the 0.054 (0.061)…
Role of IR-Improvement in LHC/FCC Physics
B. F. L. Ward, B. Shakerin, S. A. Yost
One may use amplitude-based resummation in QED QCD to achieve IR-improvement of unintegrable singularities in the infrared regime to arbitrary precision in principle. We…
IR-improved DGLAP parton shower effects for associated production of a W boson and jets in pp collisions at 8 and 13 TeV
B. Shakerin, B. F. L. Ward
In a previous paper, hereafter referred to as I, we have analyzed the 7 TeV LHC data on W + jets events from the standpoint of IR-improved DGLAP parton shower effects, using the IR…
The Monte Carlo Program KKMC for the Lepton or Quark Pair Production at LEP/SLC Energies -- updates of electroweak calculations
A. Arbuzov, S. Jadach, Z. Wąs +2
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 th…
IFI and ISR Effects for Z/ Drell-Yan Observables using MC-hh
S. Jadach, B. F. L. Ward, S. A. Yost +1
Continuing with our investigations of the expected sizes of multiple photon radiative effects in heavy gauge boson production with decay to charged lepton pairs in the context of t…
Role of IR-Improvement in Precision LHC/FCC Physics and in Quantum Gravity
B. F. L. Ward, S. Jadach, W. Placzek +3
IR-improvement based on amplitude-level resummation allows one to control unintegrable results in quantum field theory with arbitrary precision in principle. We illustrate such res…