Differential distributions for t-channel single top-quark production and decay at next-to-next-to-leading order in QCD

Berger, Edmond L.; Gao, Jun; Zhu, Hua Xing

doi:10.1007/JHEP11(2017)158

Title: Differential distributions for t-channel single top-quark production and decay at next-to-next-to-leading order in QCD

Journal Article · Fri Nov 24 00:00:00 EST 2017 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP11(2017)158· OSTI ID:1421959

Berger, Edmond L. ^[1]; Gao, Jun ^[2]; Zhu, Hua Xing ^[3]

Argonne National Lab. (ANL), Argonne, IL (United States)
Shanghai Jiao-Tong Univ., Shanghai (China)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Zhejiang Univ., Hangzhou (China)

We present a detailed phenomenological study of the next-to-next-to-leading order (NNLO) QCD corrections for t-channel single top (anti-)quark production and its semi-leptonic decay at the CERN Large Hadron Collider (LHC). We find the NNLO corrections for the total inclusive rates at the LHC with different center of mass energies are generally smaller than the NLO corrections, indicative of improved convergence. However, they can be large for differential distributions, reaching a level of 10% or more in certain regions of the transverse momentum distributions of the top (anti-)quark and the pseudo-rapidity distributions of the leading jet in the event. In all cases the perturbative hard-scale uncertainties are greatly reduced after the NNLO corrections are included. We also show a comparison of the normalized parton-level distributions to recent data from the 8 TeV measurement of the ATLAS collaboration. The NNLO corrections tend to shift the theoretical predictions closer to the measured transverse momentum distribution of the top (anti)-quark. Importantly, for the LHC at 13 TeV, we present NNLO cross sections in a fiducial volume with decays of the top quark included.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1421959

Journal Information:: Journal of High Energy Physics (Online), Vol. 2017, Issue 11; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 43 works

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NNLO QCD corrections to the polarized top quark decay $t (↑) \to X_{b} + W^{+}$ Czarnecki, A.; Groote, S.; Körner, J. G. Physical Review D, Vol. 97, Issue 9 https://doi.org/10.1103/physrevd.97.094008	journal	May 2018
Model-independent constraints on the CKM matrix elements \|Vtb\|, \|Vts\| and \|Vtd\| Clerbaux, Barbara; Fang, Wenxing; Giammanco, Andrea Journal of High Energy Physics, Vol. 2019, Issue 3 https://doi.org/10.1007/jhep03(2019)022	journal	March 2019
Towards ultimate parton distributions at the high-luminosity LHC Khalek, Rabah Abdul; Bailey, Shaun; Gao, Jun The European Physical Journal C, Vol. 78, Issue 11 https://doi.org/10.1140/epjc/s10052-018-6448-y	journal	November 2018
Soft-gluon corrections in top-quark production Kidonakis, Nikolaos International Journal of Modern Physics A, Vol. 33, Issue 25 https://doi.org/10.1142/s0217751x18300211	journal	September 2018
Higher Order Corrections to Spin Correlations in Top Quark Pair Production at the LHC Behring, Arnd; Czakon, Michał; Mitov, Alexander Karlsruhe https://doi.org/10.5445/ir/1000099253	text	January 2019
The NNLO QCD soft function for 1-jettiness Campbell, John M.; Ellis, R. Keith; Mondini, Roberto arXiv https://doi.org/10.48550/arxiv.1711.09984	text	January 2017
Soft-gluon corrections in top-quark production Kidonakis, Nikolaos arXiv https://doi.org/10.48550/arxiv.1806.03336	text	January 2018
Model-independent constraints on the CKM matrix elements $\|V_{tb}\|$, $\|V_{ts}\|$ and $\|V_{td}\|$ Fang, Wenxing; Clerbaux, Barbara; Giammanco, Andrea arXiv https://doi.org/10.48550/arxiv.1807.07319	text	January 2018
Towards Ultimate Parton Distributions at the High-Luminosity LHC Khalek, Rabah Abdul; Bailey, Shaun; Gao, Jun arXiv https://doi.org/10.48550/arxiv.1810.03639	text	January 2018
Higher order corrections to spin correlations in top quark pair production at the LHC Behring, Arnd; Czakon, Michal; Mitov, Alexander arXiv https://doi.org/10.48550/arxiv.1901.05407	text	January 2019
Off-shell single-top-quark production in the Standard Model Effective Field Theory Neumann, Tobias; Sullivan, Zack arXiv https://doi.org/10.48550/arxiv.1903.11023	text	January 2019
Next-to-leading order QCD corrections for single top-quark production in association with two jets Mölbitz, Stefan; Ninh, Le Duc; Uwer, Peter arXiv https://doi.org/10.48550/arxiv.1906.05555	text	January 2019

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