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相关论文: DeepXS: Fast approximation of MSSM electroweak cro…

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We calculate the complete next-to-leading-order (NLO) QCD corrections (including SUSY QCD corrections) to the inclusive total cross sections of the associated production processes $pp\rightarrow A^{0}\gamma+X$ in the minimal supersymmetric…

高能物理 - 唯象学 · 物理学 2015-03-17 Liang Dai , Ding Yu Shao , Chong Sheng Li , Jun Gao , Hao Zhang

Motivated by the shift in experimental attention towards electroweak supersymmetric particle production at the CERN LHC, we update in this paper our precision predictions at next-to-leading order of perturbative QCD matched to resummation…

高能物理 - 唯象学 · 物理学 2014-02-07 Benjamin Fuks , Michael Klasen , David R. Lamprea , Marcel Rothering

We consider that the direct production of a single neutralino in proton-proton collision at the CERN Large Hadron Collider focusing on the lightest neutralino is possibly a candidate for the dark matter and escapes detection. We present a…

高能物理 - 唯象学 · 物理学 2013-07-16 A. I. Ahmadov , M. Demirci

The determination of the full SUSY QCD corrections to the production of squarks, gluinos and gauginos at hadron colliders is reviewed. The NLO corrections stabilize the theoretical predictions of the various production cross sections…

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

Supersymmetry is one of the most popular extensions of the Standard Model of particle physics, as it offers solutions to several shortcomings of the Standard Model. Natural supersymmetric models favor masses for the new particles which are…

高能物理 - 实验 · 物理学 2019-08-14 Alexander Mann

We present theoretical predictions for selected differential cross sections for the process $pp \to t \bar{t} B$ at the LHC, where $B$ can be a Higgs ($H$), a $Z$ or a $W$ boson. The predictions are calculated in the direct QCD framework up…

高能物理 - 唯象学 · 物理学 2020-05-25 Anna Kulesza , Leszek Motyka , Daniel Schwartländer , Tomasz Stebel , Vincent Theeuwes

Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample…

高能物理 - 实验 · 物理学 2014-11-26 CMS Collaboration

We present a complete next-to-leading order study of top-squark pair production at the LHC, including QCD and EW corrections. The calculation is performed within the Minimal Supersymmetric Standard Model and numerical results are presented…

高能物理 - 唯象学 · 物理学 2015-06-19 Jan Germer , Wolfgang Hollik , Jonas M. Lindert , Edoardo Mirabella

We present the complete threshold enhanced predictions in QCD for the total cross section of gluino pair production at hadron colliders at next-to-next-to-leading order. Thanks to the computation of the required one-loop hard matching…

高能物理 - 唯象学 · 物理学 2012-11-26 Ulrich Langenfeld , Sven-Olaf Moch , Torsten Pfoh

For the search for charginos and neutralinos in the Minimal Supersymmetric Standard Model (MSSM) as well as for future precision analyses of these particles an accurate knowledge of their production and decay properties is mandatory. We…

高能物理 - 唯象学 · 物理学 2017-10-25 S. Heinemeyer , C. Schappacher

We present the next-to-next-to-leading order (NNLO) corrections to the total cross section for (pseudo-) scalar Higgs boson production using an alternative method than those used in previous calculations. All QCD partonic subprocesses have…

高能物理 - 唯象学 · 物理学 2011-05-05 V. Ravindran , J. Smith , W. L. van Neerven

The calculation of the next-to-leading order SUSY-QCD corrections to the production of squarks, gluinos and gauginos at the Tevatron is reviewed. The NLO corrections stabilize the theoretical predictions of the various production cross…

高能物理 - 唯象学 · 物理学 2007-05-23 W. Beenakker , M. Kraemer , T. Plehn , M. Spira

Precision predictions for phenomenologically interesting observables such as the t-tbar invariant mass distribution and forward-backward asymmetry in top-quark pair production at hadron colliders require control over the differential cross…

高能物理 - 唯象学 · 物理学 2015-03-13 Valentin Ahrens , Andrea Ferroglia , Matthias Neubert , Ben D. Pecjak , Li Lin Yang

The pair production of squarks is one of the main search channels for supersymmetry at the LHC. We present a fully differential calculation of the next-to-leading order (NLO) SUSY-QCD corrections to the on-shell production of a pair of…

高能物理 - 唯象学 · 物理学 2014-02-17 Ryan Gavin , Christian Hangst , Michael Krämer , Margarete Mühlleitner , Mathieu Pellen , Eva Popenda , Michael Spira

The dark matter relic density being a powerful observable to constrain models of new physics, the recent experimental progress calls for more precise theoretical predictions. On the particle physics side, improvements are to be made in the…

高能物理 - 唯象学 · 物理学 2016-09-19 Julia Harz , Björn Herrmann , Michael Klasen , Karol Kovařík , Patrick Steppeler

The recent LHC discovery of a Higgs-like boson at 126 GeV has important consequences for SUSY, pushing the spectrum of strong-interacting supersymmetric particles to high energies, very difficult to probe at the LHC. This gives extra…

高能物理 - 唯象学 · 物理学 2015-06-12 Maria Eugenia Cabrera , J. Alberto Casas , Bryan Zaldivar

We present a calculation of the next-to-leading order QCD corrections to weakino+squark production processes at hadron colliders and their implementation in the framework of the POWHEG-BOX, a tool for the matching of fixed-order…

高能物理 - 唯象学 · 物理学 2021-12-17 Julien Baglio , Gabriele Coniglio , Barbara Jager , Michael Spira

We consider NLO chargino production and decays at the ILC. For this, we present an NLO extension of the Monte Carlo Event Generator Whizard including the NLO production. For photonic corrections, we use both a fixed order and a resummation…

高能物理 - 唯象学 · 物理学 2008-12-19 J. Kalinowski , W. Kilian , J. Reuter , T. Robens , K. Rolbiecki

Once supersymmetric neutralinos $\tilde{\chi}^0$ are produced copiously at $e^+e^-$ linear colliders, their characteristics can be measured with high precision. In particular, the fundamental parameters in the gaugino/higgsino sector of the…

高能物理 - 唯象学 · 物理学 2009-11-11 S. Y. Choi , M. Drees , J. Song

We present the calculations of the complete next-to-leading order (NLO) QCD corrections (including supersymmetric QCD) to the inclusive total cross sections of the associated production processes $pp\to A^0Z^0+X$ in the Minimal…

高能物理 - 唯象学 · 物理学 2009-11-11 Qiang Li , Chong Sheng Li , Jian Jun Liu , Li Gang Jin , C. -P. Yuan