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Journal articles
Probing the $Wtb$ vertex structure in $t$-channel single-top-quark production and decay in $pp$ collisions at $\sqrt{\mathrm{s}}=8$ TeV with the ATLAS detector
M. Aaboud
G. Aad
1
M. Alstaty
1
M. Barbero
1
A. Calandri
1
T.P. Calvet
1
Y. Coadou
1
C. Diaconu
1
F. Djama
1
V. Ellajosyula
1
L. Feligioni
1
A. Hadef
1
G.D. Hallewell
1
F. Hubaut
1
S.J. Kahn
1
E. B. F. G. Knoops
1
E. Le Guirriec
1
K. Liu
1
D. Madaffari
1
E. Monnier
1
S. Muanza
1
E. Nagy
1
P. Pralavorio
1
Y. Rodina
1
A. Rozanov
1
M. Talby
1
T. Theveneaux-Pelzer
1
R.E. Ticse Torres
1
S. Tisserant
1
J. Toth
1
F. Touchard
1
L. Vacavant
1
R. Wolff
1
D. Boumediene
2
E. Busato
2
D. Calvet
2
S. Calvet
2
A.R. Chomont
2
J. Donini
2
S. Ganguly
2
Ph. Gris
2
R. Madar
2
D. Pallin
2
S.M. Romano Saez
2
C. Santoni
2
D. Simon
2
F. Vazeille
2
S. Albrand
3
S. Berlendis
3
A. Bethani
3
C. Camincher
3
J. Collot
3
S. Crépé-Renaudin
3
P.A. Delsart
3
C. Gabaldon
3
M.H. Genest
3
P.O.J. Gradin
3
J.Y. Hostachy
3
F. Ledroit-Guillon
3
A. Lleres
3
A. Lucotte
3
F. Malek
3
E. Petit
3
J. Stark
3
B. Trocmé
3
M. Wu
3
N. Berger
4
A.M. Burger
4
M. Delmastro
4
L. Di Ciaccio
4
S. Elles
4
K. Grevtsov
4
T. Guillemin
4
T. Hryn’ova
4
S. Jézéquel
4
I. Koletsou
4
R. Lafaye
4
Jérémy Lévêque
4
P. Mastrandea
4
E. Sauvan
4
B.H. Smart
4
T. Todorov
4
I. Wingerter-Seez
4
E. Yatsenko
4
S. Crépé-Renaudin 3
Author
P.A. Delsart 3
Author
C. Gabaldon 3
Author
M.H. Genest 3
Author IdHAL : marie-helene-genest ORCID : https://orcid.org/0000-0002-4098-2024
A. Lucotte 3
Author
F. Malek 3
Author IdHAL : fairouz-malek ResearcherId : http://www.researcherid.com/rid/E-4410-2018 IdRef : https://www.idref.fr/084171219 ORCID : https://orcid.org/0000-0002-0948-5775
E. Petit 3
Author
J. Stark 3
Author
T. Guillemin 4
Author
T. Hryn’ova 4
Author IdHAL : thrynova ORCID : https://orcid.org/0000-0001-5914-8614
S. Jézéquel 4
Author
I. Koletsou 4
Author
1
CPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7346 (France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- AMU - Aix Marseille Université : UMR7346 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
2
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux / 24 avenue des Landais / BP 80026 / 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
3
LPSC - Laboratoire de Physique Subatomique et de Cosmologie (53 avenue des Martyrs - 38026 Grenoble Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- Grenoble INP [2007-2019] - Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (46 avenue Félix Viallet 38031 Grenoble Cedex 1 - France)
- UGA [2016-2019] - Université Grenoble Alpes [2016-2019] (CS 40700 - 38058 Grenoble cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5821 (France)
4
LAPP - Laboratoire d'Annecy de Physique des Particules (9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc (27, rue Marcoz - 73000 Chambéry - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5814 (France)
Abstract : To probe the $Wtb$ vertex structure, top-quark and $W$-boson polarisation observables are measured from $t$-channel single-top-quark events produced in proton--proton collisions at a centre-of-mass energy of 8 TeV. The dataset corresponds to an integrated luminosity of 20.2 fb$^{-1}$, recorded with the ATLAS detector at the LHC. Selected events contain one isolated electron or muon, large missing transverse momentum and exactly two jets, with one of them identified as likely to contain a $b$-hadron. Stringent selection requirements are applied to discriminate $t$-channel single-top-quark events from background. The polarisation observables are extracted from asymmetries in angular distributions measured with respect to spin quantisation axes appropriately chosen for the top quark and the $W$ boson. The asymmetry measurements are performed at parton level by correcting the observed angular distributions for detector effects and hadronisation after subtracting the background contributions. The measured top-quark and $W$-boson polarisation values are in agreement with the Standard Model predictions. Limits on the imaginary part of the anomalous coupling $g_{\mathrm{R}}$ are also set from model-independent measurements.
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Journal articles
Complete list of metadatas
http://hal.in2p3.fr/in2p3-01478598
Contributor : Danielle Cristofol <>
Submitted on : Tuesday, February 28, 2017 - 11:28:52 AM
Last modification on : Thursday, August 6, 2020 - 3:09:29 AM
Contributor : Danielle Cristofol <>
Submitted on : Tuesday, February 28, 2017 - 11:28:52 AM
Last modification on : Thursday, August 6, 2020 - 3:09:29 AM
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Identifiers
- HAL Id : in2p3-01478598, version 1
- ARXIV : 1702.08309
- DOI : 10.1007/JHEP04(2017)124
Collections
IN2P3 | LPC-CLERMONT | CNRS | CPPM | UNIV-AMU | PRES_CLERMONT | LPSC | LAPP | UNIV-SAVOIE | UGA
Citation
M. Aaboud, G. Aad, M. Alstaty, M. Barbero, A. Calandri, et al.. Probing the $Wtb$ vertex structure in $t$-channel single-top-quark production and decay in $pp$ collisions at $\sqrt{\mathrm{s}}=8$ TeV with the ATLAS detector. Journal of High Energy Physics, Springer Verlag (Germany), 2017, 04, pp.124. ⟨10.1007/JHEP04(2017)124⟩. ⟨in2p3-01478598⟩
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