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We consider the production of two Higgs bosons in association with a gauge boson or another Higgs boson at the hadron colliders. We compute the cross sections and distributions for the processes $ p p \to H H H $ and $H H Z$ within the…

高能物理 - 唯象学 · 物理学 2018-02-21 Pankaj Agrawal , Debashis Saha , Ambresh Shivaji

We study the associated production of an electroweak vector boson and the Higgs boson with a jet via gluon-gluon fusion. At the leading order, these processes occur at one-loop level. The amplitudes of these one-loop processes are gauge…

高能物理 - 唯象学 · 物理学 2018-05-09 Pankaj Agrawal , Ambresh Shivaji

We present results for the production of a pair of on-shell Z bosons via gluon fusion. This process occurs both through the production and decay of the Higgs boson, and through continuum production where the Z boson couples to a loop of…

高能物理 - 唯象学 · 物理学 2016-08-09 John M. Campbell , R. Keith Ellis , Michal Czakon , Sebastian Kirchner

We consider the production of a Higgs boson via gluon-fusion and its decay into two photons. We compute the NLO virtual QCD corrections to these processes in a general framework in which the coupling of the Higgs boson to the external…

高能物理 - 唯象学 · 物理学 2010-10-27 U. Aglietti , R. Bonciani , G. Degrassi , A. Vicini

Productions of multiple gauge bosons at the LHC are sensitive to triple or quartic gauge couplings and thus provide a sensitive test for the electroweak sector of the Standard Model and allow for a probe of new physics. In this work we…

高能物理 - 唯象学 · 物理学 2024-05-13 Jianpeng Dai , Zhenghong Hu , Tao Liu , Jin Min Yang

We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-loop integrals are calculated numerically. Matching the…

高能物理 - 唯象学 · 物理学 2020-10-14 Long Chen , Gudrun Heinrich , Stephan Jahn , Stephen P. Jones , Matthias Kerner , Johannes Schlenk , Hiroshi Yokoya

The detection and the measurement of the production cross section of a light Higgs boson at the CERN Large Hadron Collider demand the accurate prediction of the background distributions of photon pairs. To improve this theoretical…

高能物理 - 唯象学 · 物理学 2008-11-26 C. Balazs , P. Nadolsky , C. Schmidt , C. -P. Yuan

We study the effect of QCD corrections to the $gg\to H\to W^+ W^-$ signal-background interference at the LHC for a heavy Higgs boson. We construct a soft-collinear approximation to the NLO and NNLO corrections for the background process,…

高能物理 - 唯象学 · 物理学 2013-10-04 Marco Bonvini , Fabrizio Caola , Stefano Forte , Kirill Melnikov , Giovanni Ridolfi

In order to solve the hierarchy problem, several extra-dimensional models have received considerable attention. We have considered a process where a Higgs boson is produced in association with a KK-graviton ($G_{\rm KK}$) at the LHC. At the…

高能物理 - 唯象学 · 物理学 2013-05-13 Ambresh Shivaji , Subhadip Mitra , Pankaj Agrawal

We present a calculation that allows for an estimation of the NNLO contributions to the Higgs production in the weak boson fusion channel. A possible deterioration of this important channel for the Higgs discoveries at the LHC can be ruled…

高能物理 - 唯象学 · 物理学 2009-11-13 Jens Vollinga

I present a calculation of QCD radiative corrections to charged Higgs production via the process bg -> tH-. I show that the cross section is dominated by soft-gluon corrections, which are computed through next-to-next-to-leading order.…

高能物理 - 唯象学 · 物理学 2009-11-10 Nikolaos Kidonakis

The two--loop ${\cal O}(\alpha_s G_F m_t^2)$ corrections to the $b\bar b$ decay rate of the Standard Model Higgs boson as well as its production via $e^+e^- \to ZH$ will be presented. These QCD corrections are obtained by using a low-energy…

高能物理 - 唯象学 · 物理学 2007-05-23 Michael Spira

We examine a method of studying the Z polarization in $H\to ZZ \to \ell^+ \ell^- \nu \bar{\nu}$ in proton-proton collisions at the Large Hadron Collider (LHC). Included are the dominant contributions: gluon fusion production of the Higgs…

高能物理 - 唯象学 · 物理学 2008-11-26 M. J. Duncan , M. H. Reno

We consider the production of a Standard-Model (SM) Higgs boson in gluon fusion in hadronic collisions and compute the QCD corrections up to next-to-next-to-leading order (NNLO) and match them to parton showers (NNLO+PS). The complete…

高能物理 - 唯象学 · 物理学 2024-10-22 Marco Niggetiedt , Marius Wiesemann

We present the NLO QCD corrections for light Higgs pair production via vector boson fusion at the LHC within the CP conserving type II two higgs doublet model in the form of a fully flexible parton--level Monte Carlo program. Scale…

高能物理 - 唯象学 · 物理学 2008-11-26 Terrance Figy

In high energy hadronic collisions, a general CP-violating Higgs boson $\Phi$ with accompanying jets can be efficiently produced via gluon fusion, which is mediated by heavy quark loops. In this letter we study the dominant sub-channel $ gg…

高能物理 - 唯象学 · 物理学 2015-06-18 Francisco Campanario , Michael Kubocz

We present a calculation of the two-loop bottom-sbottom-gluino contributions to Higgs boson production via gluon fusion in the MSSM. The calculation is based on an asymptotic expansion in the masses of the supersymmetric particles, which…

高能物理 - 唯象学 · 物理学 2010-11-19 G. Degrassi , P. Slavich

We study the contribution of gluon induced partonic subprocesses to Z gamma pair production at hadron colliders. These processes contribute only at next-to-next-to-leading order but are potentially enhanced by two factors of the gluon…

高能物理 - 唯象学 · 物理学 2011-03-23 K. L. Adamson , D. de Florian , A. Signer

We present the results for the complete next-to-leading order electroweak corrections to $pp \to HH$ at the Large Hadron Collider, focusing on the dominant gluon-gluon fusion process. While the corrections at the total cross-section level…

高能物理 - 唯象学 · 物理学 2024-06-12 Huan-Yu Bi , Li-Hong Huang , Rui-Jun Huang , Yan-Qing Ma , Huai-Min Yu

We study the amplitude of the Higgs boson production in gluon fusion mediated by a light quark loop and evaluate the logarithmically enhanced radiative corrections to the next-to-leading logarithmic approximation which sums up the terms of…

高能物理 - 唯象学 · 物理学 2020-10-13 Charalampos Anastasiou , Alexander Penin