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Related papers: TtW at NLO in QCD: Full off-shell effects and prec…

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We calculate the $W^\pm\gamma j + X$-production cross sections at next-to-leading order QCD for Tevatron and LHC collisions. We include leptonic decays of the $W$ to light leptons, with all off-shell effects taken into account. The…

High Energy Physics - Phenomenology · Physics 2009-11-17 F. Campanario , C. Englert , M. Spannowsky , D. Zeppenfeld

We report on the first computation of the next-to-next-to-leading order (NNLO) QCD corrections to $W^{\pm}Z$ production in proton collisions. We consider both the inclusive production of on-shell $W^{\pm}Z$ pairs at LHC energies and the…

High Energy Physics - Phenomenology · Physics 2016-08-17 Massimiliano Grazzini , Stefan Kallweit , Dirk Rathlev , Marius Wiesemann

We are proposing a new computational thermochemistry protocol denoted W3 theory, as a successor to W1 and W2 theory proposed earlier [Martin and De Oliveira, J. Chem. Phys. 111, 1843 (1999)]. The new method is both more accurate overall…

Chemical Physics · Physics 2007-05-23 A. Daniel Boese , Mikhal Oren , Onur Atasoylu , Jan M. L. Martin , Mihaly Kallay , Juergen Gauss

In LHC searches for new and rare phenomena the top-associated channel $pp \to t\overline{t}W^\pm +X$ is a challenging background that multilepton analyses must overcome. Motivated by sustained measurements of enhanced rates of same-sign and…

High Energy Physics - Phenomenology · Physics 2020-12-08 Stefan von Buddenbrock , Richard Ruiz , Bruce Mellado

The W^+W^- cross section has remained one of the most consistently discrepant channels compared to SM predictions at the LHC, measured by both ATLAS and CMS at 7 and 8 TeV. Developing a better modeling of this channel is crucial to…

High Energy Physics - Phenomenology · Physics 2014-12-10 Patrick Meade , Harikrishnan Ramani , Mao Zeng

Predictions of fiducial cross sections, differential cross sections and lepton charge asymmetry are presented for the production of $W^{\pm}$ bosons with leptonic decay up to next-to-next-to-leading order (NNLO) in perturbative QCD.…

High Energy Physics - Phenomenology · Physics 2016-07-26 Hasan Ogul , Kamuran Dilsiz , Emrah Tiras , Ping Tan , Yasar Onel , Jane Nachtman

We perform a detailed comparison of next-to-next-to-leading order (NNLO) QCD predictions for the W+jet and Z+jet processes with 7 TeV experimental data from ATLAS and CMS. We observe excellent agreement between theory and data for most…

High Energy Physics - Phenomenology · Physics 2016-06-27 Radja Boughezal , Xiaohui Liu , Frank Petriello

We present predictions for the production and decay of a top--antitop pair in association with a Z boson in the multi-lepton decay channel at the LHC. Our results include the complete set of LO and NLO contributions. Since our calculation…

High Energy Physics - Phenomenology · Physics 2026-02-27 Daniele Lombardi

We present a calculation of t-channel single-top-quark production and decay in the five-flavor scheme at NNLO. Our results resolve a disagreement between two previous calculations of this process that found a difference in the inclusive…

High Energy Physics - Phenomenology · Physics 2021-02-19 John Campbell , Tobias Neumann , Zack Sullivan

In this proceedings we briefly report on the state-of-the-art NLO QCD computation for the $pp\to t\bar{t}\gamma$ process in the di-lepton channel. We describe higher-order corrections to the $e^+\nu_e \, \mu^- \bar{\nu}_\mu \,…

High Energy Physics - Phenomenology · Physics 2021-01-20 Malgorzata Worek

In this paper we present the NLO QCD + NLO EW corrections to the $ZZZ$ production with subsequent $Z$-boson leptonic decays at the LHC by adopting the improved narrow width approximation, which takes into account off-shell contributions and…

High Energy Physics - Phenomenology · Physics 2016-10-20 Wang Hong , Zhang Ren-You , Ma Wen-Gan , Guo Lei , Li Xiao-Zhou , Wang Shao-Ming

The total cross section for top quark pair production close to threshold in e+e- annihilation is investigated. Details are given about the calculation at next-to-next-to-leading logarithmic order. The summation of logarithms leads to a…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. H. Hoang , A. V. Manohar , I. W. Stewart , T. Teubner

We compute the next-to-next-to-leading order (NNLO) QCD correction to the total cross-section for the reaction gg \to t\bar t + X. Together with the partonic channels we computed previously, the result derived in this letter completes the…

High Energy Physics - Phenomenology · Physics 2013-08-06 Michal Czakon , Paul Fiedler , Alexander Mitov

We study the sensitivity of the ATLAS experiment to Wtb anomalous couplings in top pair production with semileptonic decay, pp -> t tbar -> W+ b W- bbar, with one of the W bosons decaying leptonically and the other hadronically. Several…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. A. Aguilar-Saavedra , J. Carvalho , N. Castro , A. Onofre , F. Veloso

We compute the Next-to-Next-to-Leading Order (NNLO) QCD corrections to the partonic reaction that dominates top-pair production at the Tevatron. This is the first ever NNLO calculation of an observable with more than two colored partons,…

High Energy Physics - Phenomenology · Physics 2013-05-30 Peter Baernreuther , Michal Czakon , Alexander Mitov

Pair production of W gauge bosons is an important process at the LHC entering many experimental analyses, both as background in new-physics searches or Higgs measurements and as signal in precision studies and tests of the Standard Model.…

High Energy Physics - Phenomenology · Physics 2015-06-17 Francisco Campanario , Michael Rauch , Sebastian Sapeta

These Monte Carlo studies describe the impact of higher order effects in both QCD and EW $t\bar{t}W$ production. Both next-to-leading inclusive and multileg setups are studied for $t\bar{t}W$ QCD production.

High Energy Physics - Phenomenology · Physics 2021-03-01 Marcos Miralles López

The threshold scan of top pair production at a future lepton collider allows to determine several Standard Model parameters with very high precision. The recent completion of the third-order QCD corrections to the inclusive top-pair…

High Energy Physics - Phenomenology · Physics 2015-11-04 Martin Beneke , Andreas Maier , Jan Piclum , Thomas Rauh

We present an improved method for handling off-shell effects in deep inelastic nuclear scattering. With a firm understanding of the effects of the nuclear wave function, including these off-shell corrections as well as binding and…

High Energy Physics - Phenomenology · Physics 2009-10-30 C. D. Cothran , D. B. Day , S. Liuti

We discuss differences between on-shell and off-shell treatments in the search for anomalous neutral triple gauge couplings in $\mathrm{e^+ e^-}$ collisions. We find that the usual on-shell framework represents an optimal starting point,…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. Alcaraz