Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Papanastasiou, Andrew S."'
Autor:
Cooper-Sarkar, Amanda M., Czakon, Michal, Lim, Matthew A., Mitov, Alexander, Papanastasiou, Andrew S.
We present a joint extraction of the strong coupling $\alpha_s$ and the top-quark pole mass $m_t$ from measurements of top-quark pair production performed by the ATLAS and CMS experiments at the 8 TeV LHC. For the first time, differential NNLO theory
Externí odkaz:
http://arxiv.org/abs/2010.04171
Autor:
Czakon, Michał, Dulat, Sayipjamal, Hou, Tie-Jiun, Huston, Joey, Mitov, Alexander, Papanastasiou, Andrew S., Sitiwaldi, Ibrahim, Yu, Zhite, Yuan, C. --P.
LHC $t\bar{t}$ data have the potential to provide constraints on the gluon distribution, especially at high $x$, with both ATLAS and CMS performing differential measurements. Recently, CMS has measured double-differential $t\bar{t}$ distributions at
Externí odkaz:
http://arxiv.org/abs/1912.08801
Autor:
Amat, Orkash, Czakon, Michał, Dulat, Sayipjamal, Hou, Tie-Jiun, Huston, Joey, Mitov, Alexander, Papanastasiou, Andrew S., Schmidt, Carl, Sitiwaldi, Ibrahim, Xie, Keping, Yu, Zhite, Yuan, C. -P.
Detailed studies have been carried out on the impact of the LHC top quark pair production data on gluon PDF, in the context of the CTEQ-TEA global PDF fit, with the ePump-updating method. The considered $t\bar{t}$ data include single differential dis
Externí odkaz:
http://arxiv.org/abs/1908.06441
Autor:
Czakon, Michal, Ferroglia, Andrea, Mitov, Alexander, Pagani, Davide, Papanastasiou, Andrew S., Pecjak, Benjamin D., Scott, Darren J., Tsinikos, Ioannis, Wang, Xing, Yang, Li Lin, Zaro, Marco
Publikováno v:
Chin.Phys.C 44 (2020) 8, 083104
We describe predictions for top-quark pair differential distributions at hadron colliders, which combine state-of-the-art NNLO QCD calculations and NLO electroweak corrections together with double resummation at NNLL$'$ accuracy of threshold logarith
Externí odkaz:
http://arxiv.org/abs/1901.08281
Publikováno v:
Phys. Rev. Lett. 123, 082001 (2019)
We calculate, for the first time, the next-to-next-to leading order (NNLO) QCD corrections to spin correlations in top quark pair production at the LHC. The NNLO corrections play an important role in the description of the corresponding differential
Externí odkaz:
http://arxiv.org/abs/1901.05407
Autor:
Czakon, Michał, Gütschow, Christian, Lindert, Jonas M., Mitov, Alexander, Pagani, Davide, Papanastasiou, Andrew S., Schönherr, Marek, Tsinikos, Ioannis, Zaro, Marco
In this proceedings we compare phenomenological predictions for differential distributions in top-quark pair production at the LHC. In particular we consider NNLO QCD fixed-order predictions and parton-level predictions based on NLO QCD multi-jet mer
Externí odkaz:
http://arxiv.org/abs/1901.04442
Autor:
Papanastasiou, Andrew S.
In this talk we present the current status of the theoretical description of the production of top-quark pairs at the LHC, detailing recent progress for predictions at the stable-top level as well as for predictions that include the decay of the top
Externí odkaz:
http://arxiv.org/abs/1801.01020
Autor:
Gao, Jun, Papanastasiou, Andrew S.
Publikováno v:
Phys. Rev. D 96, 051501 (2017)
We present a fully-differential and high-precision calculation of top-quark pair-production and decay at the LHC, providing predictions for observables constructed from top-quark leptonic and $b$-flavoured jet final states. The calculation is impleme
Externí odkaz:
http://arxiv.org/abs/1705.08903
Publikováno v:
JHEP10(2016)053
We present up-to-date matched predictions for the $b\bar{b}H$ inclusive cross section at the LHC at $\sqrt{s}=13$ TeV. Using a previously developed method, our predictions consistently combine the complete NLO contributions that are present in the 4-
Externí odkaz:
http://arxiv.org/abs/1605.01733
Autor:
Frederix, Rikkert, Frixione, Stefano, Papanastasiou, Andrew S., Prestel, Stefan, Torrielli, Paolo
We study the hadroproduction of a $Wb$ pair in association with a light jet, focusing on the dominant $t$-channel contribution and including exactly at the matrix-element level all non-resonant and off-shell effects induced by the finite top-quark wi
Externí odkaz:
http://arxiv.org/abs/1603.01178