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相关论文: Generalized angular-order parton showers in Herwig…

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The particle showers produced in the atmosphere due to the interactions of primary cosmic particles require a thorough understanding in the backdrop of searches for rare interactions. In this work, we made a comprehensive study of air…

高能物理 - 唯象学 · 物理学 2024-02-15 Hariom Sogarwal , Prashant Shukla

In extensive air shower experiments, the number of muons crossing a detector at a given position, as well as their arrival time, arrival direction, and energy, are determined by a more fundamental 3-dimensional distribution linked to the…

高能物理 - 唯象学 · 物理学 2023-03-15 Lorenzo Cazon , Rúben Conceição , Felix Riehn

The accuracy of parton-shower simulations is often a limiting factor in the interpretation of data from high-energy colliders. We present the first formulation of parton showers with accuracy one order beyond state-of-the-art…

高能物理 - 唯象学 · 物理学 2024-06-14 Silvia Ferrario Ravasio , Keith Hamilton , Alexander Karlberg , Gavin P. Salam , Ludovic Scyboz , Gregory Soyez

After an introduction to event generators we give an overview of developments in the field of joining matrix elements with parton showers. Starting with matrix element corrections, we also discuss implementations that match LO and NLO…

高能物理 - 唯象学 · 物理学 2007-05-23 Stefan Gieseke

We present a new simulation for Higgs boson production in association with bottom quarks ($b\bar{b}H$) at next-to-leading order (NLO) accuracy matched to parton showers in hadronic collisions. Both contributions, the standard one…

高能物理 - 唯象学 · 物理学 2023-07-20 Stefano Manzoni , Elena Mazzeo , Javier Mazzitelli , Marius Wiesemann , Marco Zaro

We formulate PanScales parton showers for hadron collisions so as to achieve next-to-leading logarithmic (NLL) accuracy across a broad set of observables. We do so specifically for colour singlet production. Relative to the existing…

高能物理 - 唯象学 · 物理学 2022-11-23 Melissa van Beekveld , Silvia Ferrario Ravasio , Gavin P. Salam , Alba Soto-Ontoso , Gregory Soyez , Rob Verheyen

We study QCD radiation in decay processes involving heavy particles. As input, the first-order gluon emission rate is calculated in a number of reactions, and comparisons of the energy flow patterns show a non-negligible process dependence.…

高能物理 - 唯象学 · 物理学 2011-01-13 E. Norrbin , T. Sjöstrand

We present a general procedure to decompose Beyond the Standard Model (BSM) collider signatures presenting a Z2 symmetry into Simplified Model Spectrum (SMS) topologies. Our method provides a way to cast BSM predictions for the LHC in a…

A factorization algorithm for a patron shower model based on the evolution of momentum distributions proposed in a previous work is studied. The scaling violation of initial state parton distributions is generated using parton showers to an…

高能物理 - 唯象学 · 物理学 2008-11-26 Hidekazu Tanaka , Tetsuya Sugiura , Yuya Wakabayashi

We present first results from a new parton shower event generator, Deductor. Anticipating a need for an improved treatment of parton color and spin, the structure of the generator is based on the quantum density matrix in color and spin…

高能物理 - 唯象学 · 物理学 2015-06-18 Zoltan Nagy , Davison E. Soper

A computation of inclusive cross sections for neutral Higgs boson production through gluon fusion and bottom-quark annihilation is presented in the MSSM with complex parameters. The predictions for the gluon-fusion process are based on an…

高能物理 - 唯象学 · 物理学 2017-11-07 Stefan Liebler , Shruti Patel , Georg Weiglein

We have previously described a mathematical formulation for a parton shower based on the approximation of strongly ordered virtualities of successive parton splittings. Quantum interference, including interference among different color and…

高能物理 - 唯象学 · 物理学 2008-11-26 Zoltan Nagy , Davison E. Soper

General-purpose Monte Carlo event generators have become important tools in particle physics, allowing the simulation of exclusive hadronic final states. In this article we examine the Pythia 8 generator, in particular focusing on its…

高能物理 - 唯象学 · 物理学 2011-03-18 Richard Corke , Torbjörn Sjöstrand

The program HiggsBounds is a well-established tool for testing Beyond-the-Standard Model (BSM) theories with an extended Higgs sector against experimental limits from collider searches at LEP, Tevatron and LHC. Thus far, it could be applied…

高能物理 - 唯象学 · 物理学 2022-07-18 Henning Bahl , Victor Martin Lozano , Tim Stefaniak , Jonas Wittbrodt

In this article, we explore the inconsistencies in the physics of fermionic oscillators and propose potential solutions to address them. By rigorously deriving the Hamiltonian and Lagrangian from first principles, we aim to provide a…

量子物理 · 物理学 2025-01-22 Dheeraj Shukla , Sudhaker Upadhyay

We perform a detailed parton level study on the feasibility of the detection of a Higgs boson in the gluon fusion process $pp (gg+gq) \to h + jet \to \tau^+ \tau^- + jet$ at the Large Hadron Collider (LHC). The obtained results are applied…

高能物理 - 唯象学 · 物理学 2015-03-13 Alexander Belyaev , Renato Guedes , Stefano Moretti , Rui Santos

In this thesis, we explore the phenomenology of scalar particles within Beyond Standard Model frameworks, using Machine Learning (ML) techniques to enhance sensitivity and discovery potential at current and future collider experiments, the…

高能物理 - 唯象学 · 物理学 2025-07-22 E. A. Herrera-Chacón

Machine learning methods incorporating deep neural networks have been the subject of recent proposals for new hadronic resonance taggers. These methods require training on a dataset produced by an event generator where the true class labels…

高能物理 - 唯象学 · 物理学 2017-01-25 James Barnard , Edmund Noel Dawe , Matthew J. Dolan , Nina Rajcic

Vector-boson fusion and associated production at the LHC can provide key information on the strength and structure of the Higgs couplings to the Standard Model particles. Using an effective field theory approach, we study the effects of…

高能物理 - 唯象学 · 物理学 2015-06-17 Fabio Maltoni , Kentarou Mawatari , Marco Zaro

We investigate the simulation of events with gaps between jets with a veto on additional radiation in the gap in Herwig++. We discover that the currently-used random treatment of radiation in the parton shower is generating some unphysical…

高能物理 - 唯象学 · 物理学 2015-05-27 Alex Schofield , Michael H. Seymour