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Dark matter associated visible particle production at high energy colliders provides a unique way to determine the microscopic properties of the dark matter. We investigate a pair of fermionic dark matter particles associated with a b-jet…

高能物理 - 唯象学 · 物理学 2016-11-21 Li Gang , Yu Si-He , Song Mao , Zhang Yu , Zhou Ya-Jin , Guo Jian-You

We investigate the QCD next-to-leading order (NLO) corrections to the production of a pair of fermionic dark matter particles associated with a W boson production through a mediator which couples to standard model particles via either a…

高能物理 - 唯象学 · 物理学 2015-06-19 Song Mao , Li Gang , Ma Wen-Gan , Zhang Ren-You , Guo Jian-You

The production of two isolated photons in high-energy hadron collisions poses a challenge to perturbative QCD because of large corrections through next-to-next-to-leading order (NNLO). We present novel next-to-next-to-next-to-leading order…

高能物理 - 唯象学 · 物理学 2026-04-15 Michal Czakon , Felix Eschment , Terry Generet , Rene Poncelet

We present the computation of next-to-leading order (NLO) QCD corrections to di-photon production in association with two or three hard jets in pp collisions at a center-of-mass energy of 8 TeV. The inclusion of NLO corrections is shown to…

高能物理 - 唯象学 · 物理学 2015-06-18 Simon Badger , Alberto Guffanti , Valery Yundin

We report a next-to-leading order (NLO) calculation of the production of gaugino-like charginos ($\chargino$) and neutralinos ($\neutralino$) in association with gluinos ($\gluino$) at hadron colliders, including the strong corrections from…

高能物理 - 唯象学 · 物理学 2008-11-26 Edmond L. Berger , Michael Klasen , Tim Tait

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…

高能物理 - 唯象学 · 物理学 2022-03-02 Z. Bern , G. Diana , L. J. Dixon , F. Febres Cordero , D. Forde , T. Gleisberg , S. Hoeche , H. Ita , D. A. Kosower , D. Maitre , K. Ozeren

We study the signal of dark matter and photon associated production induced by the vector and axial-vector operators at the LHC, including the QCD next-to-leading order (NLO) effects. We find that the QCD NLO corrections reduce the…

高能物理 - 唯象学 · 物理学 2013-05-21 Fa Peng Huang , Chong Sheng Li , Jian Wang , Ding Yu Shao

We evaluate the cross sections for new heavy fermion production at three Large Hadron Collider energies accurate to next-to-leading order in perturbative quantum chromodynamics. We treat the cases of pair production of heavy quarks via…

高能物理 - 唯象学 · 物理学 2015-03-13 Edmond L. Berger , Qing-Hong Cao

Results are presented of a next-to-leading order calculation in perturbative QCD of the production of charginos and neutralinos in association with gluinos at hadron colliders. Predictions for total and differential cross sections are shown…

高能物理 - 唯象学 · 物理学 2007-05-23 E. L. Berger , T. M. P. Tait , M. Klasen

We present the calculation of next-to-next-to-leading-order (NNLO) QCD corrections to hadron multiplicities in light-quark jets at lepton colliders, employing the ``projection-to-Born" (P2B) method implemented in the FMNLO program. Taking…

高能物理 - 唯象学 · 物理学 2025-10-29 Bin Zhou , Jun Gao

In this work we calculate for the first time the next-to-next-to leading order (NNLO) QCD corrections to identified hadron production at hadron colliders. The inclusion of the NNLO correction has an important impact on all observables…

高能物理 - 唯象学 · 物理学 2025-10-23 Michał Czakon , Terry Generet , Alexander Mitov , Rene Poncelet

In this talk we present the calculation of next-to-next-to-leading order (NNLO) QCD corrections to dijet production and related observables at hadron colliders in the purely gluonic channel. Results for this channel are obtained keeping all…

高能物理 - 唯象学 · 物理学 2013-12-20 James Currie , Aude Gehrmann-De Ridder , Thomas Gehrmann , E. W. N. Glover , Joao Pires

Weakly interacting dark matter particles can be pair-produced at colliders and detected through signatures featuring missing energy in association with either QCD/EW radiation or heavy quarks. In order to constrain the mass and the…

高能物理 - 唯象学 · 物理学 2015-10-05 Mihailo Backović , Michael Krämer , Fabio Maltoni , Antony Martini , Kentarou Mawatari , Mathieu Pellen

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

In this paper we present a next-to-next-to-leading order (NNLO) calculation of the process $pp\rightarrow \gamma\gamma$ that we have implemented into the parton level Monte Carlo code MCFM. We do not find agreement with the previous…

高能物理 - 唯象学 · 物理学 2021-09-15 John M. Campbell , R. Keith Ellis , Ye Li , Ciaran Williams

We present next-to-leading order QCD predictions for cross sections and for a comprehensive set of distributions in diphoton + 2-jet production at the Large Hadron Collider. We consider the contributions from loop amplitudes for two photons…

高能物理 - 唯象学 · 物理学 2014-09-10 Z. Bern , L. J. Dixon , F. Febres Cordero , S. Hoeche , H. Ita , D. A. Kosower , N. A. Lo Presti , D. Maitre

We consider the production of a Z boson decaying to leptons in association with a bottom-quark pair in hadronic collisions. For the first time, we compute predictions at next-to-next-to-leading order (NNLO) in QCD, and we combine them with…

高能物理 - 唯象学 · 物理学 2024-06-21 Javier Mazzitelli , Vasily Sotnikov , Marius Wiesemann

The $B_c$ meson pair, including pairs of pseudoscalar states and vector states, productions in proton-proton collisions are investigated at the next-to-leading order (NLO) accuracy in the nonrelativistic quantum chromodynamics factorization…

高能物理 - 唯象学 · 物理学 2024-02-09 Zi-Qiang Chen , Long-Bin Chen , Cong-Feng Qiao

We report the results of a next-to-leading order event generator of purely gluonic jet production. This calculation is the first step in the construction of a full next-to-leading order calculation of three jet production at hadron…

高能物理 - 唯象学 · 物理学 2009-10-30 William B. Kilgore , W. T. Giele

We perform a thorough investigation of the universality of the long distance matrix elements (LDMEs) of nonrelativistic QCD factorization based on a next-to-leading order (NLO) fit of $J/\psi$ color octet (CO) LDMEs to high transverse…

高能物理 - 唯象学 · 物理学 2025-07-18 Nora Brambilla , Mathias Butenschoen , Xiang-Peng Wang
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