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The next-to-leading order analysis for the cross section for hadroproduction of top quark pairs close to threshold is presented. Within the framework of non-relativistic QCD a significant enhancement compared to fixed order perturbation…

High Energy Physics - Phenomenology · Physics 2009-03-30 Y. Kiyo , J. H. Kühn , S. Moch , M. Steinhauser , P. Uwer

Using the recently derived NNLO cross sections \cite{Czakon:2013goa}, we provide NNLO+NNLL theoretical predictions for top quark pair production based on all the available NNLO PDF sets, and compare them with the most precise LHC and…

High Energy Physics - Phenomenology · Physics 2015-06-15 Michal Czakon , Michelangelo L. Mangano , Alexander Mitov , Juan Rojo

Top quark physics are an appropriate laboratory to study phenomena of the Standard Model and to test the limits of this theory. To obtain a higher precision for top quark predictions, the next-to-next-to-leading order (NNLO) in the…

High Energy Physics - Phenomenology · Physics 2013-10-23 Anne-Sophia Schade

Studies of highly-boosted top quarks produced inclusively in pp collisions at 14 TeV are discussed. The hadronic decays of boosted top quarks was studied in a data-driven approach by analysing shapes of jet-mass distributions. Using Monte…

High Energy Physics - Phenomenology · Physics 2013-10-02 B. Auerbach , S. V. Chekanov , N. Kidonakis

A scan of the top production threshold at a future electron-positron collider provides the possibility for a precise measurement of the top quark mass in theoretically well-defined mass schemes. With statistical uncertainties of 20 MeV or…

High Energy Physics - Experiment · Physics 2016-08-23 Frank Simon

The reaction pp/pbar p -> t tbar jet+X is an important background process for Higgs boson searches in the mass range below 200 GeV. Apart from that it is also an ideal laboratory for precision measurements in the top quark sector. Both…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. Brandenburg , S. Dittmaier , P. Uwer , S. Weinzierl

We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I (1992- 1996) measurements with the most recent preliminary Run-II (2001- present) measurements using up to 750/pb of data.…

High Energy Physics - Experiment · Physics 2012-08-27 Tevatron Electroweak Working Group

We present the analytic total cross section of top quark pair production in electron-positron annihilation at next-to-next-to-leading order (NNLO) in Quantum Chromodynamics (QCD). By utilizing the optical theorem, the NNLO corrections are…

High Energy Physics - Phenomenology · Physics 2024-09-10 Long-Bin Chen , Jian Wang , Yefan Wang

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

We calculate a comprehensive set of spin correlations and differential distributions in top-quark pair production and decay to dilepton final states. This is the first time such a complete study is performed at next-to-next-to leading order…

High Energy Physics - Phenomenology · Physics 2023-01-11 Michal Czakon , Alexander Mitov , Rene Poncelet

We present updated predictions for the total production cross section of top-quark pairs at the Tevatron and at the LHC, and, at the LHC, of heavy-quark pairs with mass in the range 0.5-2 TeV. For t\bar{t} production at the LHC we also…

High Energy Physics - Phenomenology · Physics 2009-05-08 Matteo Cacciari , Stefano Frixione , Michelangelo L. Mangano , Paolo Nason , Giovanni Ridolfi

We present the most recent and sensitive measurements of the top quark mass, performed by the Tevatron experiments, D0 and CDF, using ppbar collision data at sqrt(s) = 1.96 TeV. We also present the first measurement of the top quark…

High Energy Physics - Experiment · Physics 2015-10-16 Boris Tuchming

We present a complete description of top quark pair production in association with a hard photon in the di-lepton decay channel. The calculation is performed at NLO QCD and includes all resonant and non-resonant Feynman diagrams,…

High Energy Physics - Phenomenology · Physics 2025-02-07 Daniel Stremmer , Malgorzata Worek

We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I measurements with the most recent Run-II measurements. Taking correlated uncertainties into account the resulting…

High Energy Physics - Experiment · Physics 2019-08-14 Tevatron Electroweak Working Group

The impact of the finite top-quark mass on the inclusive Higgs production cross section at higher perturbative orders has been an open question for almost three decades. In this paper, we report on the computation of this effect at NNLO…

High Energy Physics - Phenomenology · Physics 2023-09-29 M. Czakon , R. V. Harlander , J. Klappert , M. Niggetiedt

We analyze the energy spectra of $single$ b-jets and B-hadrons resulting from the production and decay of top quarks within the SM at the LHC at the NLO QCD. For both hadrons and jets, we calculate the correlation of the peak of the…

High Energy Physics - Phenomenology · Physics 2016-12-21 Kaustubh Agashe , Doojin Kim , Roberto Franceschini , Markus Schulze

The extraction of quantities from lattice QCD calculations at realistic quark masses is of considerable importance. Whilst physical quark masses are some way off, the recent advances in the calculation of hadron masses within full QCD now…

High Energy Physics - Lattice · Physics 2010-02-17 S. V. Wright , D. B. Leinweber , A. W. Thomas , K. Tsushima

We make use of recent results in effective theory and higher-order perturbative calculations to improve the theoretical predictions of the QCD contribution to the top-quark pair production forward-backward asymmetry at the Tevatron. In…

High Energy Physics - Phenomenology · Physics 2013-05-29 Valentin Ahrens , Andrea Ferroglia , Matthias Neubert , Ben D. Pecjak , Li Lin Yang

We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I (1992-1996) measurements with the most recent preliminary Run-II (2001-present) measurements using up to 2.8 fb^-1 of data.…

High Energy Physics - Experiment · Physics 2019-08-14 The Tevatron Electroweak Working Group

We present predictions for the total top-quark pair production cross section at the Tevatron and the LHC with 7,8 and 14 TeV centre-of-mass energy, including the resummation of threshold logarithms and Coulomb corrections through…

High Energy Physics - Phenomenology · Physics 2012-07-05 M. Beneke , P. Falgari , S. Klein , J. Piclum , C. Schwinn