Report/Journal Article

PUBDB-2018-03274

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lepton-pair production in association with a $\mathrm{b\bar{b}}$ pair and the determination of the $W$ boson mass

Bagnaschi, E.DESY* ; Maltoni, F. ; Vicini, A. ; Zaro, M. (Corresponding author)

2018
Springer Berlin

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Please use a persistent id in citations: doi:10.1007/JHEP07(2018)101  doi:10.3204/PUBDB-2018-03274

Report No.: CP3-18-16; DESY-18-024; NIKHEF/2018-008; TIF-UNIMI 2018-2; arXiv:1803.04336

Abstract: We perform a study of lepton-pair production in association with bottom quarks at the LHC based on the predictions obtained at next-to-leading order in QCD, both at fixed order and matched with a QCD parton shower. We consider a comprehensive set of observables and estimate the associated theoretical uncertainties by studying the dependence on the perturbative QCD scales (renormalisation, factorisation and shower) and by comparing different parton-shower models (Pythia8 and Herwig++) and matching schemes (MadGraph5_aMC@NLO and POWHEG). Based on these results, we propose a simple procedure to include bottom-quark effects in neutral-current Drell-Yan production, going beyond the standard massless approximation. Focusing on the inclusive lepton-pair transverse-momentum distribution $p_{\bot}^{l^+l^-}$, we quantify the impact of such effects on the tuning of the simulation of charged-current Drell-Yan observables and the $W$-boson mass determination.

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)
2. SFB 676 B08 - Globale SM + BSM Fits mit Resultaten vom LHC und anderen Experimenten (B08) (87303299) (87303299)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2018

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Database coverage:
; ; ; ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF >= 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint/Report Bagnaschi, E. (Corresponding author)DESY* ; Maltoni, F. ; Vicini, A. ; Zaro, M.
Lepton-pair production in association with a $\mathrm{b\bar{b}}$ pair and the determination of the $W$ boson mass
[10.3204/PUBDB-2018-01499]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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