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Nlo Qcc Corrections To The Jet Activity In Higgs Boson Production Via Vector Boson Fusion
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Book Synopsis NLO QCC Corrections to the Jet Activity in Higgs Boson Production Via Vector-Boson Fusion by : Terrance Maynard Figy
Download or read book NLO QCC Corrections to the Jet Activity in Higgs Boson Production Via Vector-Boson Fusion written by Terrance Maynard Figy and published by . This book was released on 2006 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phenomenological Analysis of Higgs Boson Production Through Gluon Fusion in Association with Jets by :
Download or read book Phenomenological Analysis of Higgs Boson Production Through Gluon Fusion in Association with Jets written by and published by . This book was released on 2016 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, we present a detailed phenomenological analysis of the production of a Standard Model Higgs boson in association with up to three jets. We consider the gluon fusion channel using an effective theory in the large top-quark mass limit. Higgs boson production in gluon fusion constitutes an irreducible background to the vector boson fusion (VBF) process; hence the precise knowledge of its characteristics is a prerequisite for any measurement in the VBF channel. The calculation is carried out at next-to-leading order (NLO) in QCD in a fully automated way by combining the two programs GoSam and Sherpa. We present numerical results for a large variety of observables for both standard cuts and VBF selection cuts. We find that for all jet multiplicities the NLO corrections are sizeable. This is particularly true in the presence of kinematic selections enhancing the VBF topology, which are based on vetoing additional jet activity. In this case, precise predictions for the background can be made using our calculation by taking the difference between the inclusive H+2 jets and the inclusive H+3 jets result.
Book Synopsis Next-to-next-to-leading Order QCD Corrections to Higgs Boson Production in Association with Two Jets in Vector Boson Fusion by : Juan Manuel Cruz-Martinez
Download or read book Next-to-next-to-leading Order QCD Corrections to Higgs Boson Production in Association with Two Jets in Vector Boson Fusion written by Juan Manuel Cruz-Martinez and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NLO QCD Corrections to Vector Boson Production in Association with Multiple Heavy and Light Jets by : Felix Richard Anger
Download or read book NLO QCD Corrections to Vector Boson Production in Association with Multiple Heavy and Light Jets written by Felix Richard Anger and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Precise theory predictions for scattering processes are an important input for the physics program at the Large Hadron Collider at CERN, Geneva. Notably the complex collider signatures of an electroweak vector boson and many jets that originate in either light partons (light jets) or bottom quarks (b jets) are relevant for both measurements of Standard Model processes as well as searches for new physics. In this thesis, we present new next-to-leading order QCD predictions for two related high-multiplicity processes at the LHC $\sqrt{s} = 13$ TeV. We show predictions for $Wb\bar{b}$ production in association with two and three light jets that we computed for the first time. In order to obtain the required one-loop amplitudes, we implement the numerical unitarity approach for massive particles in a new version of the BlackHat library. To this end, we devise and apply a new algorithm for the evaluation of D-dimensional unitarity cuts. It builds on a consistent embedding of external fermions states in dimensional regularization and reduces the computational complexity of our calculations. Furthermore, we present next-to-leading order QCD predictions for $V+n$-jet production in association with up to $n = 5$ light jets for $V = W^\pm$ and with up to $n = 4$ light jets for $V = Z$, which we extend to the higher center-of-mass energy of the Large Hadron Collider Run-II. For these processes we compare results obtained with fixed-order scales such as $\hat{H}_T^'/2$ with the MiNLO reweighting procedure
Book Synopsis NLO Corrections and Parton Shower Effects on Electroweak Higgs Production in Association with Two Jets by : Johannes Scheller
Download or read book NLO Corrections and Parton Shower Effects on Electroweak Higgs Production in Association with Two Jets written by Johannes Scheller and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: While every particle predicted by the Standard Model of particle physics has been observed since the Higgs boson was finally discovered in 2012, researchers in the field continue to test the predictions by this very successful theory with enormous precision. Their hope is to be able to determine whether the Standard Model is actually the fundamental theory of the elementary particles, or whether it is part of a more comprehensive theory. Since its discovery, the properties of the Higgs boson and its various production channels have drawn special attention in the scientific community. This thesis focusses on one of these production modes, namely the electroweak production of a Higgs boson in association with two hard jets. This process is known for its high signal-to-background ratio and is expected to be particularly sensitive to the effects of new physics beyond the Standard Model. We present an implementation of this process in the publicly available framework of the POWHEG BOX RES. This implementation includes corrections at the next-to-leading order of both the strong as well as the electroweak coupling and can be matched to a so-called parton shower, therefore allowing for the calculation of exclusive distributions that can be compared to experimental results. Regarding the sub-process of vector boson fusion (VBF), we present the first calculation that allows for the matching of a parton shower with a precision calculation at the next-to leading order of the electroweak coupling. Furthermore, we do not rely on the widely used VBF approximation, which neglects contributions corresponding to the sub-process of Higgsstrahlung. We are thus able to perform precision calculations in a significantly larger part of the phase space than previous implementations in the POWHEG framework that were limited to the VBF approximation. Using our new implementation, one can calculate arbitrary kinematic distributions of the final state particles. In this thesis, this is demonstrated by a phenomenological study featuring selected important distributions. We thereby not only confirm the ability of our code to reproduce existing results at the next-to-leading order of the strong coupling, but we are also able to show the importance of corrections at next-to-leading order of the electroweak coupling. In contrast, the influence of a QED shower turns out to have only a mild influence.
Book Synopsis NLO QCD Corrections to Electroweak Higgs Boson Plus Three Jet Production at the LHC by :
Download or read book NLO QCD Corrections to Electroweak Higgs Boson Plus Three Jet Production at the LHC written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NLO QCD Corrections to the Production of Two Lepton Pairs Via Vector-boson Fusion at the LHC by : Lucia Hošeková
Download or read book NLO QCD Corrections to the Production of Two Lepton Pairs Via Vector-boson Fusion at the LHC written by Lucia Hošeková and published by . This book was released on 2012 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anomalous Higgs Boson Couplings in Vector Boson Fusion : by Tinghua Chen by : Tinghua Chen
Download or read book Anomalous Higgs Boson Couplings in Vector Boson Fusion : by Tinghua Chen written by Tinghua Chen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of the Higgs boson at the Large Hadron Collider (LHC) in 2012 marked a significant milestone in particle physics. Since then, extensive investigations have been carried out to unravel the properties of the Higgs boson and understand its interactions with other fundamental particles. Monte Carlo simulations play an important role in studies of particle physics. They generate theoretical predictions and can be compared with experimental data to test our understanding of physics. In this dissertation, the anomalous Higgs boson coupling to vector bosons was implemented in VBFNLO for Higgs boson plus three jets via VBF at the next-to-leading order (NLO) accuracy. I present results for a number of collider observables that are sensitive to the CP structure, whether in different CP scenarios and in the Standard Model. I also investigate the effects of NLO multijet merging and NLO QCD corrections matched to a parton shower on selected observables through the framework provided by Herwig 7.
Book Synopsis NLO QDC Corrections to Elctroweak Higgs Boson Plus Three Jet Production Ant the LHC by :
Download or read book NLO QDC Corrections to Elctroweak Higgs Boson Plus Three Jet Production Ant the LHC written by and published by . This book was released on 2013 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Higgs Boson Pair Production Via Gluon Fusion by : Seraina Glaus
Download or read book Higgs Boson Pair Production Via Gluon Fusion written by Seraina Glaus and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NLO QCD Corrections to Electroweak Higgs Boson Plus Three Jet Production at the LHC by :
Download or read book NLO QCD Corrections to Electroweak Higgs Boson Plus Three Jet Production at the LHC written by and published by . This book was released on 2013 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NLO QCD Corrections to Higgs Boson Pair Production in Gluon Fusion by : Juraj Streicher
Download or read book NLO QCD Corrections to Higgs Boson Pair Production in Gluon Fusion written by Juraj Streicher and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NLO Higgs Boson Production Plus One and Two Jets Using the POWHEG BOX, MadGraph4 and MCFM. by :
Download or read book NLO Higgs Boson Production Plus One and Two Jets Using the POWHEG BOX, MadGraph4 and MCFM. written by and published by . This book was released on 2012 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a next-to-leading order calculation of Higgs boson production plus one and two jets via gluon fusion interfaced to shower Monte Carlo programs, implemented according to the POWHEG method. For this implementation we have used a new interface of the POWHEG BOX with MadGraph4, that generates the codes for generic Born and real processes automatically. The virtual corrections have been taken from the MCFM code. We carry out a simple phenomenological study of our generators, comparing them among each other and with fixed next-to-leading order results.
Book Synopsis NLO Vector Boson Production With Light Jets by :
Download or read book NLO Vector Boson Production With Light Jets written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this contribution we present recent progress in the computation of next-to-leading order (NLO) QCD corrections for the production of an electroweak vector boson in association with jets at hadron colliders. We focus on results obtained using the virtual matrix element library BlackHat in conjunction with SHERPA, focusing on results relevant to understanding the background to top production. The production of a vector boson in association with several jets at the Large Hadron Collider (LHC) is an important background for other Standard Model processes as well as new physics signals. In particular, the production of a W boson in association with many jets is an important background for processes involving one or more top quarks. Precise predictions for the backgrounds are crucial to measurement of top-quark processes. Vector boson production in association with multiple jets is also a very important background for many SUSY searches, as it mimics the signatures of many typical decay chains. Here we will discuss how polarization information can be used as an additional handle to differentiate top pair production from 'prompt' W-boson production. More generally, ratios of observables, for example for events containing a W boson versus those containing a Z boson, are expected to be better-behaved as many uncertainties cancel in such ratios. Precise calculation of ratios, along with measurement of one of the two processes in the ratio, can be used in data-driven techniques for estimating backgrounds.
Book Synopsis Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector by : Eric Ouellette
Download or read book Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector written by Eric Ouellette and published by Springer. This book was released on 2015-02-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Thesis describes the first measurement of, and constraints on, Higgs boson production in the vector boson fusion mode, where the Higgs decays to b quarks (the most common decay channel), at the LHC. The vector boson fusion mode, in which the Higgs is produced simultaneously with a pair of quark jets, provides an unparalleled opportunity to study the detailed properties of the Higgs, including the possibility of parity and CP violation, as well as its couplings and mass. It thus opens up this new field of study for precision investigation as the LHC increases in energy and intensity, leading the way to this new and exciting arena of precision Higgs research.
Book Synopsis Next-to-leading Order ??+2-jet Production at the LHC. by :
Download or read book Next-to-leading Order ??+2-jet Production at the LHC. written by and published by . This book was released on 2014 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present next-to-leading-order QCD predictions for cross sections and for a comprehensive set of distributions in ??+2-jet production at the Large Hadron Collider. We consider the contributions from loop amplitudes for two photons and four gluons, but we neglect top quarks. We use BlackHat together with SHERPA to carry out the computation. We use a Frixione cone isolation for the photons. We study standard sets of cuts on the jets and the photons and also sets of cuts appropriate for studying backgrounds to Higgs-boson production via vector-boson fusion.
Book Synopsis Triple Vector Boson Production Through Higgs-Strahlung with NLO Multijet Merging by :
Download or read book Triple Vector Boson Production Through Higgs-Strahlung with NLO Multijet Merging written by and published by . This book was released on 2014 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Triple gauge boson hadroproduction, in particular the production of three W-bosons at the LHC, is considered at next-to leading order accuracy in QCD. The NLO matrix elements are combined with parton showers. Multijet merging is invoked such that NLO matrix elements with one additional jet are also included. The studies here incorporate both the signal and all relevant backgrounds for V H production with the subsequent decay of the Higgs boson into W- or [tau]-- pairs. They have been performed using SHERPA+OPENLOOPS in combination with COLLIER.
