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相关论文: HERWIRI1.031: New Approach to Parton Shower MC's i…

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By implementing the new IR-improved Dokshitzer-Gribov-Lipatov-Altarelli-Parisi-Callan-Symanzik (DGLAP-CS) kernels recently developed by one of us in the HERWIG6.5 environment we generate a new MC, HERWIRI1.0(31), for hadron-hadron…

高能物理 - 唯象学 · 物理学 2010-05-28 S. Joseph , S. Majhi , B. F. L. Ward , S. A. Yost

We have implemented the new IR-improved Dokshitzer-Gribov-Lipatov-Altarelli-Parisi-Callan-Symanzik (DGLAP-CS) kernels recently developed by one of us in the HERWIG6.5 environment to generate a new MC, HERWIRI1.0(31), for hadron-hadron…

高能物理 - 唯象学 · 物理学 2010-05-11 B. F. L. Ward , S. Joseph , S. Majhi , S. A. Yost

We introduce the new IR-improved Dokshitzer-Gribov-Lipatov-Altarelli-Parisi-Callan-Symanzik (DGLAP-CS) kernels recently developed by one of us into the HERWIG6.5 to generate a new MC, HERWIRI1.0(31), for hadron-hadron scattering at high…

高能物理 - 唯象学 · 物理学 2015-05-18 B. F. L. Ward , S. Joseph , S. Majhi , S. A. Yost

We present Monte Carlo data showing the comparison between the parton shower generated by the standard DGLAP-CS kernels and that generated with the new IR-improved DGLAP-CS kernels recently developed by one of us(BFLW). We do this in the…

高能物理 - 唯象学 · 物理学 2010-03-02 S. Joseph , S. Majhi , B. F. L. Ward , S. A. Yost

We present the interplay between the new IR-improved DGLAP-CS theory and the precision of NLO parton shower/ME matched MC`s as it is realized by the new MC Herwiri1.031 in interface to MC@NLO. We discuss phenomenological implications using…

高能物理 - 唯象学 · 物理学 2013-02-05 B. F. L. Ward , S. K. Majhi , A. Mukhopadhyay , S. A. Yost

We present the elements of the IR-improved DGLAP-CS theory as it relates to the new MC friendly exponentiated scheme for precision calculation of higher order corrections to LHC physics in which IR singularities from both QED and QCD are…

高能物理 - 唯象学 · 物理学 2008-08-25 B. F. L. Ward , S. Joseph , S. Majhi , S. A. Yost

We summarize the recent progress in a new approach to precision LHC physics based on the IR-improved DGLAP-CS theory as it relates to a new MC friendly exponentiated scheme for precision calculation of higher order corrections to LHC…

高能物理 - 唯象学 · 物理学 2008-10-07 B. F. L. Ward , S. Joseph , S. Majhi , S. A. Yost

We present a phenomenological study of the current status of the application of our approach of {\it exact} amplitude-based resummation in quantum field theory to precision QCD calculations, by realistic MC event generator methods, as…

高能物理 - 唯象学 · 物理学 2014-09-22 S. K. Majhi , A. Mukhopadhyay , B. F. L. Ward , S. A. Yost

We introduce the recently developed IR-improved DGLAP-CS theory into the showers in Pythia8, as this Monte Carlo event generator is in wide use at LHC. We show that, just as it was true in the IR-improved shower Monte Carlo Herwiri, which…

高能物理 - 唯象学 · 物理学 2016-03-23 B. F. L. Ward

We use HERWIRI1.031, a new Monte Carlo event generator for hadron-hadron scattering at high energies, to study the phenomenological effects of our approach of exact amplitude-based resummation in precision QCD calculations. W + jet(s)…

高能物理 - 唯象学 · 物理学 2019-08-29 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-improved Herwiri1.031 parton shower MC in comparison with…

高能物理 - 唯象学 · 物理学 2020-11-18 B. Shakerin , B. F. L. Ward

We present the current status of the application of our approach of {\it exact} amplitude-based resummation in quantum field theory to precision QCD calculations, by realistic MC event generator methods, as needed for precision LHC…

高能物理 - 唯象学 · 物理学 2013-03-04 S. K. Majhi , A. Mukhopadhyay , B. F. L. Ward , S. A. Yost

We use comparison with recent LHCb data on single Z/\gamma^* production and decay to lepton pairs as a vehicle to study the current status of the application of our approach of {\it exact} amplitude-based resummation in quantum field theory…

高能物理 - 唯象学 · 物理学 2016-03-30 A. Mukhopadhyay , 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…

高能物理 - 唯象学 · 物理学 2016-10-12 S. Jadach , B. F. L. Ward , Z. A. Was , S. A. Yost

We describe the program HERWIRI2.1, which implements order alpha-squared photonic radiative corrections exponentiated at the amplitude level (initial state, final state, and initial-final interference) and electroweak corrections to the…

高能物理 - 唯象学 · 物理学 2016-09-19 Scott Yost , B. F. L. Ward

It is shown that exact, amplitude-based resummation allows IR-improvement of the usual DGLAP theory. This results in a new set of kernels, parton distributions and attendant reduced cross sections, so that the QCD perturbative result for…

高能物理 - 唯象学 · 物理学 2010-03-25 B. F. L. Ward

This is the user's manual of MC@NLO 3.1. This package is a practical implementation, based upon the HERWIG event generator, of the MC@NLO formalism, which allows one to incorporate NLO QCD matrix elements consistently into a parton shower…

高能物理 - 唯象学 · 物理学 2007-05-23 Stefano Frixione , Bryan R. Webber

With the imminent start of LHC experiments, development of phenomenological tools, and in particular the Monte Carlo programs and algorithms, becomes urgent. A new algorithm for the generation of a parton shower initiated by the single…

高能物理 - 唯象学 · 物理学 2010-03-25 S. Jadach , W. Placzek , M. Skrzypek , P. Stephens , Z. Was

HERWIG is a general-purpose Monte Carlo event generator, which includes the simulation of hard lepton-lepton, lepton-hadron and hadron-hadron scattering and soft hadron-hadron collisions in one package. It uses the parton-shower approach…

高能物理 - 唯象学 · 物理学 2011-06-15 G. Corcella , I. G. Knowles , G. Marchesini , S. Moretti , K. Odagiri , P. Richardson , M. H. Seymour , B. R. Webber

A new release of the Monte Carlo event generator Herwig (version 7.3) has been launched. This iteration encompasses several enhancements over its predecessor, version 7.2. Noteworthy upgrades include: the implementation of a…

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