Research output: Contribution to journal › Article › peer-review
Search for single production of vector-like quarks decaying into Wb in pp collisions at √s = 13 TeV with the ATLAS detector. / The ATLAS collaboration; Бобровников, Виктор Сергеевич; Бузыкаев, Алексей Рафаилович et al.
In: Journal of High Energy Physics, Vol. 2019, No. 5, 164, 01.05.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Search for single production of vector-like quarks decaying into Wb in pp collisions at √s = 13 TeV with the ATLAS detector
AU - The ATLAS collaboration
AU - Aaboud, M.
AU - Aad, G.
AU - Abbott, B.
AU - Abdinov, O.
AU - Abeloos, B.
AU - Abhayasinghe, D. K.
AU - Abidi, S. H.
AU - AbouZeid, O. S.
AU - Abraham, N. L.
AU - Abramowicz, H.
AU - Abreu, H.
AU - Abulaiti, Y.
AU - Acharya, B. S.
AU - Adachi, S.
AU - Adam, L.
AU - Adamczyk, L.
AU - Adelman, J.
AU - Adersberger, M.
AU - Adiguzel, A.
AU - Adye, T.
AU - Affolder, A. A.
AU - Afik, Y.
AU - Agheorghiesei, C.
AU - Aguilar-Saavedra, J. A.
AU - Ahmadov, F.
AU - Aielli, G.
AU - Akatsuka, S.
AU - Åkesson, T. P.A.
AU - Akilli, E.
AU - Akimov, A. V.
AU - Alberghi, G. L.
AU - Albert, J.
AU - Albicocco, P.
AU - Alconada Verzini, M. J.
AU - Alderweireldt, S.
AU - Aleksa, M.
AU - Aleksandrov, I. N.
AU - Alexa, C.
AU - Anisenkov, A. V.
AU - Baldin, E. M.
AU - Kazanin, V. F.
AU - Kharlamova, T.
AU - Maslennikov, A. L.
AU - Maximov, D. A.
AU - Podberezko, P.
AU - Rezanova, O. L.
AU - Soukharev, A. M.
AU - Talyshev, A. A.
AU - Tikhonov, Yu A.
AU - Zhulanov, V.
AU - Бобровников, Виктор Сергеевич
AU - Бузыкаев, Алексей Рафаилович
AU - Харламов, Алексей Георгиевич
AU - Пелеганчук, Сергей Владимирович
AU - Bogdanchikov, A. G.
N1 - Funding Information: Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Publisher Copyright: © 2019, The Author(s).
PY - 2019/5/1
Y1 - 2019/5/1
N2 - A search for singly produced vector-like quarks Q, where Q can be either a T quark with charge +2/3 or a Y quark with charge −4/3, is performed in proton–proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 36.1 fb−1, recorded with the ATLAS detector at the LHC in 2015 and 2016. The analysis targets Q → Wb decays where the W boson decays leptonically. No significant deviation from the expected Standard Model background is observed. Upper limits are set on the QWb coupling strength and the mixing between the Standard Model sector and a singlet T quark or a Y quark from a (B, Y) doublet or a (T, B, Y) triplet, taking into account the interference effects with the Standard Model background. The upper limits set on the mixing angle are as small as |sin θL| = 0.18 for a singlet T quark of mass 800 GeV, |sin θR| = 0.17 for a Y quark of mass 800 GeV in a (B, Y) doublet model and |sin θL| = 0.16 for a Y quark of mass 800 GeV in a (T, B, Y) triplet model. Within a (B, Y) doublet model, the limits set on the mixing parameter |sin θR| are comparable with the exclusion limits from electroweak precision observables in the mass range between about 900 GeV and 1250 GeV.
AB - A search for singly produced vector-like quarks Q, where Q can be either a T quark with charge +2/3 or a Y quark with charge −4/3, is performed in proton–proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 36.1 fb−1, recorded with the ATLAS detector at the LHC in 2015 and 2016. The analysis targets Q → Wb decays where the W boson decays leptonically. No significant deviation from the expected Standard Model background is observed. Upper limits are set on the QWb coupling strength and the mixing between the Standard Model sector and a singlet T quark or a Y quark from a (B, Y) doublet or a (T, B, Y) triplet, taking into account the interference effects with the Standard Model background. The upper limits set on the mixing angle are as small as |sin θL| = 0.18 for a singlet T quark of mass 800 GeV, |sin θR| = 0.17 for a Y quark of mass 800 GeV in a (B, Y) doublet model and |sin θL| = 0.16 for a Y quark of mass 800 GeV in a (T, B, Y) triplet model. Within a (B, Y) doublet model, the limits set on the mixing parameter |sin θR| are comparable with the exclusion limits from electroweak precision observables in the mass range between about 900 GeV and 1250 GeV.
KW - Exotics
KW - Hadron-Hadron scattering (experiments)
KW - PROTON-PROTON COLLISIONS
KW - BOSON
KW - MASS
KW - PLUS PLUS
KW - T QUARK
KW - PAIR PRODUCTION
UR - http://www.scopus.com/inward/record.url?scp=85066509129&partnerID=8YFLogxK
U2 - 10.1007/JHEP05(2019)164
DO - 10.1007/JHEP05(2019)164
M3 - Article
AN - SCOPUS:85066509129
VL - 2019
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1029-8479
IS - 5
M1 - 164
ER -
ID: 20345853