Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at root s=13 TeV with ATLS

M. Aaboud; G. Aad; B. Abbott; J. Abdallah; O. Abdinov; B Abeloos; R. Aben; Ossama Sherif Alexander Abouzeid; NL Abraham; H. Abramowicz; H. Abreu; Y. Abulaiti; B.S. Acharya; Shin-ichi Adachi; L. Adamczyk; David L. Adams; J. Adelman; S. Adomeit; T. Adye; A. A. Affolder; Peter Henrik Hansen; Graig Wiglesworth; Gorm Aske Gram Krohn Galster; Flavia de Almeida Dias; Mogens Dam; Fabian Alexander Jürgen Thiele; James William Monk; Milena Bajic; Jørgen Beck Hansen; Troels Christian Petersen; Simon Holm Stark; Alejandro Alonso Diaz; Jørn Dines Hansen; Geert-Jan Besjes; Stefania Xella

doi:10.1007/JHEP01(2018)063

Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at root s=13 TeV with ATLS

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B Abeloos, R. Aben, Ossama Sherif Alexander Abouzeid, NL Abraham, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, Shin-ichi Adachi, L. Adamczyk, David L. Adams, J. Adelman, S. Adomeit, T. Adye, A. A. AffolderPeter Henrik Hansen, Graig Wiglesworth, Gorm Aske Gram Krohn Galster, Flavia de Almeida Dias, Mogens Dam, Fabian Alexander Jürgen Thiele, James William Monk, Milena Bajic, Jørgen Beck Hansen, Troels Christian Petersen, Simon Holm Stark, Alejandro Alonso Diaz, Jørn Dines Hansen, Geert-Jan Besjes, Stefania Xella

Experimental Particle Physics

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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 s=13 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 W t signal is then separated from the tt¯ 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 σ_W t = 94 ± 10(stat.)_{− 22} ^{+ 28}(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σ_theory = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].

Original language	English
Article number	063
Journal	Journal of High Energy Physics
Volume	2018
Issue number	1
Number of pages	42
ISSN	1126-6708
DOIs	https://doi.org/10.1007/JHEP01(2018)063
Publication status	Published - 1 Jan 2018

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Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., ... Xella, S. (2018). Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at root s=13 TeV with ATLS. Journal of High Energy Physics, 2018(1), [063]. https://doi.org/10.1007/JHEP01(2018)063

Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Abouzeid, OSA, Abraham, NL, Abramowicz, H, Abreu, H, Abulaiti, Y, Acharya, BS, Adachi, S, Adamczyk, L, Adams, DL, Adelman, J, Adomeit, S, Adye, T, Affolder, AA, Hansen, PH , Wiglesworth, G, Galster, GAGK, de Almeida Dias, F, Dam, M, Thiele, FAJ, Monk, JW, Bajic, M, Hansen, JB , Petersen, TC, Stark, SH, Alonso Diaz, A, Hansen, JD, Besjes, G-J & Xella, S 2018, 'Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at root s=13 TeV with ATLS', Journal of High Energy Physics, vol. 2018, no. 1, 063. https://doi.org/10.1007/JHEP01(2018)063

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title = "Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at root s=13 TeV with ATLS",

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 s=13 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 W t signal is then separated from the tt¯ 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 σW t = 94 ± 10(stat.)− 22 + 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].",

author = "M. Aaboud and G. Aad and B. Abbott and J. Abdallah and O. Abdinov and B Abeloos and R. Aben and Abouzeid, {Ossama Sherif Alexander} and NL Abraham and H. Abramowicz and H. Abreu and Y. Abulaiti and B.S. Acharya and Shin-ichi Adachi and L. Adamczyk and Adams, {David L.} and J. Adelman and S. Adomeit and T. Adye and Affolder, {A. A.} and Hansen, {Peter Henrik} and Graig Wiglesworth and Galster, {Gorm Aske Gram Krohn} and {de Almeida Dias}, Flavia and Mogens Dam and Thiele, {Fabian Alexander J{\"u}rgen} and Monk, {James William} and Milena Bajic and Hansen, {J{\o}rgen Beck} and Petersen, {Troels Christian} and Stark, {Simon Holm} and {Alonso Diaz}, Alejandro and Hansen, {J{\o}rn Dines} and Geert-Jan Besjes and Stefania Xella",

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AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Abeloos, B

AU - Aben, R.

AU - Abouzeid, Ossama Sherif Alexander

AU - Abraham, NL

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B.S.

AU - Adachi, Shin-ichi

AU - Adamczyk, L.

AU - Adams, David L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Hansen, Peter Henrik

AU - Wiglesworth, Graig

AU - Galster, Gorm Aske Gram Krohn

AU - de Almeida Dias, Flavia

AU - Dam, Mogens

AU - Thiele, Fabian Alexander Jürgen

AU - Monk, James William

AU - Bajic, Milena

AU - Hansen, Jørgen Beck

AU - Petersen, Troels Christian

AU - Stark, Simon Holm

AU - Alonso Diaz, Alejandro

AU - Hansen, Jørn Dines

AU - Besjes, Geert-Jan

AU - Xella, Stefania

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 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 W t signal is then separated from the tt¯ 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 σW t = 94 ± 10(stat.)− 22 + 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].

AB - The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 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 W t signal is then separated from the tt¯ 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 σW t = 94 ± 10(stat.)− 22 + 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].

U2 - 10.1007/JHEP01(2018)063

DO - 10.1007/JHEP01(2018)063

M3 - Journal article

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 1

M1 - 063

ER -

Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at root s=13 TeV with ATLS

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