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In this article we calculate the next-to-leading order (NLO) QCD corrections for single on-shell top-quark production in association with two jets at proton-proton colliders. The tW channel is assumed to be measured independently. The QCD…

高能物理 - 唯象学 · 物理学 2020-01-29 Stefan Mölbitz , Le Duc Ninh , Peter Uwer

We complete the computation of the two-loop helicity amplitudes for the production of three photons at hadron colliders, including all contributions beyond the leading-color approximation. We reconstruct the analytic form of the amplitudes…

高能物理 - 唯象学 · 物理学 2023-10-16 Samuel Abreu , Giuseppe De Laurentis , Harald Ita , Maximillian Klinkert , Ben Page , Vasily Sotnikov

We propose an alternative approach based on series representation to directly reduce multi-loop multi-scale scattering amplitude into set of freely chosen master integrals. And this approach avoid complicated calculations of inverse matrix…

高能物理 - 唯象学 · 物理学 2020-05-06 Yefan Wang , Zhao Li , Najam ul Basat

In the framework of the littlest Higgs model with $T$ parity, we study the $W_H/Z_H+q_-$ and $W_H$-pair productions at the CERN Large Hadron Collider up to the QCD next-to-leading order (NLO). The kinematic distributions of final decay…

高能物理 - 唯象学 · 物理学 2014-06-11 Guo Lei , Zhang Ren-You , Ma Wen-Gan

The production of the Standard Model Higgs boson of mass ~ 100-140 GeV at the LHC likely gives clear signals in the $\gamma \gamma$ (1) and in the $\gamma \gamma jet$ (2) channels. The quantitative evaluation of the background to channel…

高能物理 - 唯象学 · 物理学 2009-10-31 D. de Florian , Z. Kunszt

We present a fully differential next-to-next-to-leading order calculation of t-channel single top-quark production and decay at the LHC under narrow-width approximation and neglecting cross-talk between incoming protons. We focus on the…

高能物理 - 唯象学 · 物理学 2016-11-01 Edmond L. Berger , Jun Gao , C. -P. Yuan , Hua Xing Zhu

We perform an analytic calculation of the one-loop amplitude for the W-boson mediated process 0 \to d u-bar Q Q-bar l-bar l, retaining the mass for the quark Q. The momentum of each of the massive quarks is expressed as the sum of two…

高能物理 - 唯象学 · 物理学 2011-03-18 Simon Badger , John M. Campbell , R. K. Ellis

In this paper, we present results at next-to-leading order (NLO) QCD for photon pair production in association with two jets via vector boson scattering within the Standard Model (SM), and also in an effective field theory framework with…

高能物理 - 唯象学 · 物理学 2020-07-15 Francisco Campanario , Matthias Kerner , Le Duc Ninh , Ivan Rosario

We present next-to-next-to-leading-order (NNLO) QCD corrections to the production of three isolated photons in hadronic collisions at the fully differential level. We employ qT subtraction within MATRIX and an efficient implementation of…

高能物理 - 唯象学 · 物理学 2021-01-05 Stefan Kallweit , Vasily Sotnikov , Marius Wiesemann

We review exclusive top pair production including decays at a future high-energy lepton collider, both in the threshold region and for higher energies. For the continuum process, we take complete QCD next-to-leading order matrix elements…

We compute the non-factorisable contribution to the two-loop helicity amplitude for $t$-channel single-top production, the last missing piece of the two-loop virtual corrections to this process. Our calculation employs analytic reduction to…

高能物理 - 唯象学 · 物理学 2021-12-01 Christian Brønnum-Hansen , Kirill Melnikov , Jérémie Quarroz , Chen-Yu Wang

I present approximate next-to-next-to-leading-order (aNNLO) transverse-momentum ($p_T$) distributions in single-top production processes. The aNNLO results are derived from next-to-next-to-leading-logarithm (NNLL) resummation of soft-gluon…

高能物理 - 唯象学 · 物理学 2016-03-23 Nikolaos Kidonakis

We study the Hamiltonian truncation for the two-dimensional $\lambda\phi^4$ theory within the framework of Hamiltonian truncation effective theory, where truncation artifacts are mitigated through a systematic inclusion of corrective terms…

高能物理 - 唯象学 · 物理学 2026-02-16 Andrea Maestri , Simone Rodini , Barbara Pasquini

We compute next-to-leading order QCD corrections to the top-bottom interference contribution to H+j production at the LHC. To achieve this, we combine the recent computation of the two-loop amplitudes for gg -> Hg and qg -> Hq, performed in…

高能物理 - 唯象学 · 物理学 2017-06-28 Jonas M. Lindert , Kirill Melnikov , Lorenzo Tancredi , Chris Wever

The $W$-pair production in association with a massive (anti)bottom jet is not only an important background to a number of interesting processes, such as the single top production associated with a W boson, but also a potential background to…

高能物理 - 唯象学 · 物理学 2011-08-19 Yan Han , Wang Shao-Ming , Ma Wen-Gan , Zhang Ren-You , Guo Lei

Since the precise study of Higgs gauge couplings is important to test the Standard Model (SM), we calculate the complete next-to-leading order QCD(NLO QCD) correction to the $pp \to HZW^{\pm}$ production in the SM at 14 TeV LHC. Our results…

高能物理 - 唯象学 · 物理学 2015-06-17 Ning Liu , Jie Ren , Bingfang Yang

We present the analytic results of one-loop squared amplitudes for $tW$ production at a hadron collider. The calculation is performed using the method of differential equations. After renormalization, we have checked that the infrared…

高能物理 - 唯象学 · 物理学 2022-08-30 Long-Bin Chen , Liang Dong , Hai Tao Li , Zhao Li , Jian Wang , Yefan Wang

With a key improvement, the auxiliary mass flow method is now able to compute Feynman integrals encountered in cutting-edge collider processes. We have successfully applied it to compute some integrals involved in two-loop electroweak…

高能物理 - 唯象学 · 物理学 2022-03-16 Xiao Liu , Yan-Qing Ma

We present a calculation of pseudoscalar Higgs production in association with a jet at Next-to-Next-to Leading Order (NNLO) accuracy in QCD. We work in an effective field theory in which $m_t \rightarrow \infty$ resulting in effective…

高能物理 - 唯象学 · 物理学 2024-05-06 Youngjin Kim , Ciaran Williams

We present results for the production of a Z boson in association with single top at next-to-leading order (NLO), including the decay of the top quark and the Z boson. This electroweak process gives rise to the trilepton signature l+l-l'+-…

高能物理 - 唯象学 · 物理学 2013-06-12 John Campbell , R. Keith Ellis , Raoul Röntsch