Measurement of the cross-section for producing a $W$ boson in association with a single top quark in $pp$ collisions at $\sqrt{s}={13}\text{TeV}$ with ATLAS

M. Aaboud N. Berger 1 A.M. Burger 1 M. Delmastro 1 L. Di Ciaccio 1 S. Elles K. Grevtsov 1 T. Guillemin 1 T. Hryn’ova 1 S. Jézéquel 1 I. Koletsou 1 R. Lafaye 1 J. Levêque 1 P. Mastrandea 1 E. Sauvan 1 B.H. Smart 1 T. Todorov 1 I. Wingerter-Seez 1 E. Yatsenko 1 S. Albrand 2 S. Berlendis 2 A. Bethani 2 C. Camincher 2 J. Collot 2 S. Crépé-Renaudin 2 P.A. Delsart 2 C. Gabaldon 2 M.H. Genest 2 P.O.J. Gradin 2 J.Y. Hostachy 2 F. Ledroit-Guillon 2 A. Lleres 2 A. Lucotte 2 F. Malek 2 E. Petit 2 J. Stark 2 B. Trocmé 2 M. Wu 2 G. Rahal 3 G. Aad 4 M. Alstaty 4 M. Barbero 4 A. Calandri 4 T.P. Calvet 4 Y. Coadou 4 C. Diaconu 4 F. Djama 4 V. Ellajosyula 4 L. Feligioni 4 A. Hadef 4 G.D. Hallewell 4 F. Hubaut 4 S.J. Kahn 4 E. B. F. G. Knoops 4 E. Le Guirriec 4 K. Liu 5 D. Madaffari 4 E. Monnier 4 S. Muanza 4 E. Nagy 4 P. Pralavorio 4 Y. Rodina 4 A. Rozanov 4 M. Talby 4 T. Theveneaux-Pelzer 4 R.E. Ticse Torres 4 S. Tisserant 4 J. Toth 6, 4 F. Touchard 4 L. Vacavant 7, 4 Chen Wang 4, 7 R. Wolff 4 D. Boumediene 8 E. Busato 8 D. Calvet 8 S. Calvet 8 A.R. Chomont 8 J. Donini 8 S. Ganguly 8 Ph. Gris 8 R. Madar 8 D. Pallin 8 S.M. Romano Saez 8 C. Santoni 8 D. Simon 8 F. Vazeille 8
Abstract : The inclusive cross-section for the associated production of a $W$ boson and top quark is measured using data from proton-proton collisions at $\sqrt{s}={13}\text{TeV}$. The dataset corresponds to an integrated luminosity of 3.2 fb$^{-1}$, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing $b$ hadrons. The $Wt$ signal is then separated from the $t\bar{t}$ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be $94 \pm 10$ (stat.)$^{+28}_{-22}$ (syst.) $\pm 2$ (lumi.) pb. The measurement is in agreement with the Standard Model prediction.
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Journal of High Energy Physics, Springer Verlag (Germany), 2018, 01, pp.63. 〈10.1007/JHEP01(2018)063〉
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Soumis le : mardi 10 janvier 2017 - 16:06:09
Dernière modification le : mardi 24 juillet 2018 - 15:46:14

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M. Aaboud, N. Berger, A.M. Burger, M. Delmastro, L. Di Ciaccio, et al.. Measurement of the cross-section for producing a $W$ boson in association with a single top quark in $pp$ collisions at $\sqrt{s}={13}\text{TeV}$ with ATLAS. Journal of High Energy Physics, Springer Verlag (Germany), 2018, 01, pp.63. 〈10.1007/JHEP01(2018)063〉. 〈in2p3-01431232〉

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