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相关论文: Helac-Phegas: a generator for all parton level pro…

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As continuation of our previous paper we further develop our new method for calculating helicity amplitudes of jet-like QED processes described by tree diagrams, applying it to lepton pair production. This method consists in replacing…

高能物理 - 唯象学 · 物理学 2011-09-13 C. Carimalo , A. Schiller , V. G. Serbo

The matrix element method is widely considered the ultimate LHC inference tool for small event numbers. We show how a combination of two conditional generative neural networks encodes the QCD radiation and detector effects without any…

高能物理 - 唯象学 · 物理学 2023-09-13 Anja Butter , Theo Heimel , Till Martini , Sascha Peitzsch , Tilman Plehn

We present predictions for the production cross section of a Standard Model Higgs boson in association with a top-antitop pair at next-to-leading order accuracy using matrix elements obtained from the HELAC-Oneloop package. The NLO…

高能物理 - 唯象学 · 物理学 2011-11-10 M. V. Garzelli , A. Kardos , C. G. Papadopoulos , Z. Trocsanyi

The new matrix element generator AMEGIC++ is introduced, dedicated to describe multi-particle production in high energy particle collisions. It automatically generates helicity amplitudes for the processes under consideration and constructs…

高能物理 - 唯象学 · 物理学 2009-11-07 F. Krauss , R. Kuhn , G. Soff

Motivated by new models of dynamical electroweak symmetry breaking that predict a light composite higgs boson, we build an effective lagrangian which describes the Standard Model (with a light Higgs) and vector resonances. We compute the…

高能物理 - 唯象学 · 物理学 2008-11-26 Alfonso R. Zerwekh

We investigate inclusive forward single-hadron production in high-energy proton--proton collisions using a CGC-inspired Monte Carlo event generator, MC-CGC. We carried out a systematic study of the sensitivity of the running-coupling…

高能物理 - 唯象学 · 物理学 2026-05-18 Hirotsugu Fujii , Tetsufumi Hirano , Kazunori Itakura , Yasushi Nara , Shujun Zhao

We introduce a new efficient algorithm for phase space generation. A parton shower is used to distribute events across all of multiplicity, flavor, and phase space, and these events can then be reweighted to any desired analytic…

高能物理 - 唯象学 · 物理学 2008-12-18 Christian W. Bauer , Frank J. Tackmann , Jesse Thaler

KaTie is a parton-level event generator for hadron scattering processes that can deal with partonic initial-state momenta with an explicit transverse momentum dependence causing them to be space-like. Provided with the necessary transverse…

高能物理 - 唯象学 · 物理学 2017-11-23 A. van Hameren

We study a few basic photon- and lepton-initiated processes at the LHC which can be computed using the recently developed photon and lepton parton densities. First, we consider the production of a massive scalar particle initiated by…

高能物理 - 唯象学 · 物理学 2022-01-05 Luca Buonocore , Paolo Nason , Francesco Tramontano , Giulia Zanderighi

We describe a Monte Carlo event generator for the production and decay of first and second string resonances through 2 $\rightarrow$ 2 partonic and also 2-parton $\rightarrow$ $\gamma$-parton scatterings in proton-proton collisions -…

高能物理 - 唯象学 · 物理学 2018-11-26 Pourya Vakilipourtakalou , Douglas M. Gingrich

This is the user's manual of MC@NLO 4.0. This package is a practical implementation, based upon the Fortran HERWIG and Herwig++ event generators, of the MC@NLO formalism, which allows one to incorporate NLO QCD matrix elements consistently…

高能物理 - 唯象学 · 物理学 2010-10-06 Stefano Frixione , Fabian Stoeckli , Paolo Torrielli , Bryan R. Webber , Chris D. White

A WEB-portal HepWeb allows users to perform the most popular calculations in high energy physics - calculations of hadron-hadron, hadron-nucleus and nucleus-nucleus interaction cross sections as well as calculations of secondary particles…

高能物理 - 唯象学 · 物理学 2012-09-03 E. I. Alexandrov , V. M. Kotov , V. V. Uzhinsky , P. V. Zrelov

This Report summarizes the proceedings of the 2017 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt with (I) new developments relevant for high precision Standard Model calculations, (II) theoretical uncertainties and…

We propose a new mechanism where both Dirac masses for the charged-leptons and Majorana masses for neutrinos are generated via quantum levels. The charged-lepton masses are given by the vacuum expectation values (VEVs) of the Higgs doublet…

高能物理 - 唯象学 · 物理学 2014-03-26 Hiroshi Okada , Kei Yagyu

The cross section for central diffractive Higgs production is calculated, for the LHC range of energies. The graphs for the possible mechanisms for Higgs production, through pomeron fusion and photon fusions are calculated for all…

高能物理 - 唯象学 · 物理学 2007-11-13 J. S. Miller

Subtle field-theoretical effects suggest the presence of additional Higgs contributions in standard model processes. This has been supported by electroweak lattice calculation, e.\ g.\ for vector boson scattering. These effects can be…

高能物理 - 唯象学 · 物理学 2024-10-01 Axel Maas , Duifje M. van Egmond , Simon Plätzer

We present an algorithm for the reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of tau leptons. The algorithm is based on matrix element (ME) techniques and achieves a relative resolution on the Higgs boson…

高能物理 - 实验 · 物理学 2017-06-07 L. Bianchini , B. Calpas , J. Conway , A. Fowlie , L. Marzola , L. Perrini , C. Veelken

The production of an intermediate-mass Higgs boson in processes of the kind $e^+ e^- \to 6$ fermions at the energies of future linear colliders is studied. The recently developed and fully automatic algorithm/code ALPHA is used to compute…

高能物理 - 唯象学 · 物理学 2011-09-13 G. Montagna , M. Moretti , O. Nicrosini , F. Piccinini

This is the user's manual of MC@NLO 2.2. 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

Procedural content generation (PCG) is a growing field, with numerous applications in the video game industry and great potential to help create better games at a fraction of the cost of manual creation. However, much of the work in PCG is…