Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

doi:10.1140/epjc/s10052-021-09371-7

Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

Ben-Gurion University of the Negev, Tel Aviv University, Technion - Israel Institute of Technology

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Abstract

The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb-1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation.

Original language	American English
Article number	720
Journal	European Physical Journal C
Volume	81
Issue number	8
DOIs	https://doi.org/10.1140/epjc/s10052-021-09371-7
State	Published - 1 Aug 2021

All Science Journal Classification (ASJC) codes

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1140/epjc/s10052-021-09371-7

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@article{49f0e840b26847c7b830085a8593970d,

title = "Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector",

abstract = "The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb-1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation.",

author = "G. Aad and B. Abbott and Abbott, \{D. C.\} and Abud, \{A. Abed\} and K. Abeling and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and AbouZeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and B. Achkar and S. Adachi and L. Adam and Bourdarios, \{C. Adam\} and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and S. Adorni and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agapopoulou and Agaras, \{M. N.\} and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and Ahmed, \{W. S.\} and X. Ai and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Khoury, \{K. Al\} and Alberghi, \{G. L.\} and J. Albert and Verzini, \{M. J.Alconada\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and Citron, \{Z. H.\} and B. Parida and M. Pitt and L. Barak and G. Bella and Y. Benhammou and Biswal, \{J. P.\} and T. Cao and B. Chen and H. Cohen and E. Etzion and G. Koren and O. Kuprash and Lutz, \{M. S.\} and Dominguez, \{L. Pascual\} and D. Reikher and A. Soffer and Tamir, \{N. M.\} and D. Vannicola and S. Istin and E. Kajomovitz and M. Morgenstern and Seabra, \{L. F.Oleiro\} and Y. Rozen and S. Tarem",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",

year = "2021",

month = aug,

day = "1",

doi = "10.1140/epjc/s10052-021-09371-7",

language = "American English",

volume = "81",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "8",

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TY - JOUR

T1 - Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abud, A. Abed

AU - Abeling, K.

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 - Achkar, B.

AU - Adachi, S.

AU - Adam, L.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adorni, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agapopoulou, C.

AU - Agaras, M. N.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ai, X.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Khoury, K. Al

AU - Alberghi, G. L.

AU - Albert, J.

AU - Verzini, M. J.Alconada

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Citron, Z. H.

AU - Parida, B.

AU - Pitt, M.

AU - Barak, L.

AU - Bella, G.

AU - Benhammou, Y.

AU - Biswal, J. P.

AU - Cao, T.

AU - Chen, B.

AU - Cohen, H.

AU - Etzion, E.

AU - Koren, G.

AU - Kuprash, O.

AU - Lutz, M. S.

AU - Dominguez, L. Pascual

AU - Reikher, D.

AU - Soffer, A.

AU - Tamir, N. M.

AU - Vannicola, D.

AU - Istin, S.

AU - Kajomovitz, E.

AU - Morgenstern, M.

AU - Seabra, L. F.Oleiro

AU - Rozen, Y.

AU - Tarem, S.

PY - 2021/8/1

Y1 - 2021/8/1

N2 - The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb-1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation.

AB - The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb-1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation.

UR - http://www.scopus.com/inward/record.url?scp=85112563688&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-021-09371-7

DO - 10.1140/epjc/s10052-021-09371-7

M3 - Article

SN - 1434-6044

VL - 81

JO - European Physical Journal C

JF - European Physical Journal C

IS - 8

M1 - 720

ER -

Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector

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