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The production and decay of supersymmetric particles is presented. The dependence of the hadro-production cross section for weakly and strongly interacting yields an improvement of derived mass bounds or the measurement of the masses,…

High Energy Physics - Phenomenology · Physics 2007-05-23 Tilman Plehn

We present new results on the NNNLO top-antitop production cross section near threshold from potential and ultrasoft gluon corrections. The new non-logarithmic third-order terms are in the 10% range and lead to a significant reduction in…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Beneke , Y. Kiyo , K. Schuller

We study the factorization and resummation of the $t\bar{t}W^\pm$ production at hadron colliders. The cross section in the threshold limit can be factorized into a convolution of hard and soft functions and parton distribution functions…

High Energy Physics - Phenomenology · Physics 2014-11-14 Hai Tao Li , Chong Sheng Li , Shi Ang Li

We perform a threshold resummation calculation for the associated production of gluinos and gauginos at the LHC to the next-to-leading logarithmic accuracy. Analytical results are presented for the process-dependent soft anomalous dimension…

High Energy Physics - Phenomenology · Physics 2017-01-24 B. Fuks , M. Klasen , M. Rothering

Our calculation of the total cross section for inclusive production of $t\bar{t}$ pairs in hadron collisions is presented. The principal ingredient of the calculation is resummation of the universal leading-logarithm effects of gluon…

High Energy Physics - Phenomenology · Physics 2009-10-28 Edmond L. Berger , Harry Contopanagos

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…

High Energy Physics - Phenomenology · Physics 2012-11-26 Ulrich Langenfeld , Sven-Olaf Moch , Torsten Pfoh

We present the full next-to-leading order (NLO) corrected inclusive cross section for massive lepton pair production in longitudinally polarized proton-proton collisions. All QCD partonic subprocesses have been included provided the lepton…

High Energy Physics - Phenomenology · Physics 2009-11-07 W. L. van Neerven

We study the role of the threshold variable in soft-gluon threshold resummation. We focus on the computation of the resummed total cross section, the final-state invariant-mass distribution, and transverse-momentum distribution of the Higgs…

High Energy Physics - Phenomenology · Physics 2023-01-11 Melissa van Beekveld , Wim Beenakker

In this paper we examine thoroughly the single (anti-)top quark production associated with a lightest neutralino at the possible CERN Large Hadron Electron Collider (LHeC). We calculate the full next-to-leading order (NLO) QCD corrections…

High Energy Physics - Phenomenology · Physics 2013-07-23 Li Xiao-Peng , Guo Lei , Ma Wen-Gan , Zhang Ren-You , Han Liang , Song Mao

We present a complete next-to-leading order (NLO) calculation for the total cross section for inclusive Higgs pair production via bottom-quark fusion at the CERN Large Hadron Collider (LHC) in the minimal supersymmetric standard model…

High Energy Physics - Phenomenology · Physics 2008-11-26 Sally Dawson , Chung Kao , Yili Wang

We compute the complete next-to-leading order (NLO) SUSY-QCD corrections for the associated production of a pseudoscalar Higgs boson with a bottom quark via bottom-gluon fusion at the CERN Large Hadron Collider (LHC) and the Fermilab…

High Energy Physics - Phenomenology · Physics 2009-11-10 Hou Hong-Sheng , Ma Wen-Gan , Zhang Ren-You , Sun Yan-Bin , Wu Peng

We consider QCD radiative corrections to the production of colourless high-mass systems in hadron collisions. We show that the recent computation of the soft-virtual corrections to Higgs boson production at N$^3$LO [1] together with the…

High Energy Physics - Phenomenology · Physics 2015-06-19 S. Catani , L. Cieri , D. de Florian , G. Ferrera , M. Grazzini

We investigate the resummation effects in the Standard Model Higgs boson pair production through gluon-gluon fusion at the LHC with soft-collinear effective theory. We calculate the total cross section and the invariant mass distribution at…

High Energy Physics - Phenomenology · Physics 2013-08-01 Ding Yu Shao , Chong Sheng Li , Hai Tao Li , Jian Wang

Novel PDFs taking into account resummation-improved matrix elements, albeit only in the fit of a reduced data set, allow for consistent NLO+NLL calculations of slepton pair production at the LHC. We apply a factorisation method to this…

High Energy Physics - Phenomenology · Physics 2018-04-18 J. Fiaschi , M. Klasen

Motivated by the increased precision expected from LHC Run 3, equally accurate theory predictions are mandatory. As supersymmetry mass limits increase, predictions can be improved by threshold resummation. We examine the effects of…

High Energy Physics - Phenomenology · Physics 2022-05-17 Juri Fiaschi , Benjamin Fuks , Michael Klasen , Alexander Neuwirth

We present the production cross section for a lepton-neutrino pair at the Large Hadron Collider computed at next-to-next-to-next-to leading order (N3LO) in QCD perturbation theory. We compute the partonic coefficient functions of a virtual…

High Energy Physics - Phenomenology · Physics 2020-12-30 Claude Duhr , Falko Dulat , Bernhard Mistlberger

We perform the all orders resummation of threshold enhanced contributions for the Higgs boson pair production cross section via gluon fusion, including finite top quark mass ($M_t$) effects. We present results for the total cross section…

High Energy Physics - Phenomenology · Physics 2018-09-26 Daniel de Florian , Javier Mazzitelli

We use renormalization-group methods in effective field theory to improve the theoretical prediction for the cross section for Higgs-boson production at hadron colliders. In addition to soft-gluon resummation at NNNLL, we also resum…

High Energy Physics - Phenomenology · Physics 2014-06-16 Valentin Ahrens , Thomas Becher , Matthias Neubert , Li Lin Yang

We present the explicit expressions for the resummation of large-x Sudakov effects in the transverse-energy distribution of prompt-photons produced in hadronic collisions, to next-to-leading logarithmic (NLL) accuracy. Fragmentation…

High Energy Physics - Phenomenology · Physics 2010-02-03 S. Catani , M. L. Mangano , P. Nason

We perform the resummation of soft-gluon emissions for squark and gluino production at next- to-next-to-leading-logarithmic (NNLL) accuracy. We include also the one-loop hard matching coefficients as well as Coulomb corrections to second…

High Energy Physics - Phenomenology · Physics 2015-06-19 Wim Beenakker , Christoph Borschensky , Michael Krämer , Anna Kulesza , Eric Laenen , Vincent Theeuwes , Silja Thewes