Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector

M. Aaboud; G. Aad; B. Abbott; O. Abdinov; B Abeloos; DK Abhayasinghe; S.H. Abidi; Ossama Sherif Alexander Abouzeid; NL Abraham; H. Abramowicz; H. Abreu; Y. Abulaiti; B.S. Acharya; Sosuke Adachi; L. Adamczyk; J. Adelman; M. Adersberger; A. Adiguzel; T. Adye; A. A. Affolder; Y.  Afik; C. Agheorghiesei; F. Ahmadov; G. Aielli; Alejandro Alonso Diaz; Geert-Jan Besjes; Milena Bajic; Mogens Dam; Flavia de Almeida Dias; Gorm Aske Gram Krohn Galster; Jørgen Beck Hansen; Peter Henrik Hansen; Jørn Dines Hansen; James William Monk; Troels Christian Petersen; Fabian Alexander Jürgen Thiele; Simon Holm Stark; Graig Wiglesworth; Stefania Xella

doi:10.1103/PhysRevLett.121.152002

Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B Abeloos, DK Abhayasinghe, S.H. Abidi, Ossama Sherif Alexander Abouzeid, NL Abraham, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, Sosuke Adachi, L. Adamczyk, J. Adelman, M. Adersberger, A. Adiguzel, T. Adye, A. A. AffolderY. Afik, C. Agheorghiesei, F. Ahmadov, G. Aielli, Alejandro Alonso Diaz, Geert-Jan Besjes, Milena Bajic, Mogens Dam, Flavia de Almeida Dias, Gorm Aske Gram Krohn Galster, Jørgen Beck Hansen, Peter Henrik Hansen, Jørn Dines Hansen, James William Monk, Troels Christian Petersen, Fabian Alexander Jürgen Thiele, Simon Holm Stark, Graig Wiglesworth, Stefania Xella

Experimental Particle Physics

14 Citations (Scopus)

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Abstract

This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a W boson and a b-quark are significant. Events with exactly two leptons (ee, μμ, or eμ) and two b-tagged jets that satisfy a multiparticle invariant mass requirement are selected from 36.1 fb-1 of proton-proton collision data taken at s=13 TeV with the ATLAS detector at the LHC in 2015 and 2016. The results are compared with predictions from simulations using various strategies for the interference. The standard prescriptions for interference modeling are significantly different from each other but are within 2σ of the data. State-of-the-art predictions that naturally incorporate interference effects provide the best description of the data in the measured region of phase space most sensitive to these effects. These results provide an important constraint on interference models and will guide future model development and tuning.

Original language	English
Article number	152002
Journal	Physical Review Letters
Volume	121
Issue number	15
Number of pages	20
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.121.152002
Publication status	Published - 12 Oct 2018

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Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adiguzel, A., Adye, T., ... Xella, S. (2018). Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector. Physical Review Letters, 121(15), [152002]. https://doi.org/10.1103/PhysRevLett.121.152002

Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, Abouzeid, OSA, Abraham, NL, Abramowicz, H, Abreu, H, Abulaiti, Y, Acharya, BS, Adachi, S, Adamczyk, L, Adelman, J, Adersberger, M, Adiguzel, A, Adye, T, Affolder, AA, Afik, Y, Agheorghiesei, C, Ahmadov, F, Aielli, G, Alonso Diaz, A, Besjes, G-J, Bajic, M, Dam, M, de Almeida Dias, F, Galster, GAGK, Hansen, JB , Hansen, PH , Hansen, JD, Monk, JW, Petersen, TC, Thiele, FAJ, Stark, SH, Wiglesworth, G & Xella, S 2018, 'Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector', Physical Review Letters, vol. 121, no. 15, 152002. https://doi.org/10.1103/PhysRevLett.121.152002

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title = "Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector",

abstract = "This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a W boson and a b-quark are significant. Events with exactly two leptons (ee, μμ, or eμ) and two b-tagged jets that satisfy a multiparticle invariant mass requirement are selected from 36.1 fb-1 of proton-proton collision data taken at s=13 TeV with the ATLAS detector at the LHC in 2015 and 2016. The results are compared with predictions from simulations using various strategies for the interference. The standard prescriptions for interference modeling are significantly different from each other but are within 2σ of the data. State-of-the-art predictions that naturally incorporate interference effects provide the best description of the data in the measured region of phase space most sensitive to these effects. These results provide an important constraint on interference models and will guide future model development and tuning.",

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

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T1 - Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdinov, O.

AU - Abeloos, B

AU - Abhayasinghe, DK

AU - Abidi, S.H.

AU - Abouzeid, Ossama Sherif Alexander

AU - Abraham, NL

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B.S.

AU - Adachi, Sosuke

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 - Ahmadov, F.

AU - Aielli, G.

AU - Alonso Diaz, Alejandro

AU - Besjes, Geert-Jan

AU - Bajic, Milena

AU - Dam, Mogens

AU - de Almeida Dias, Flavia

AU - Galster, Gorm Aske Gram Krohn

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Monk, James William

AU - Petersen, Troels Christian

AU - Thiele, Fabian Alexander Jürgen

AU - Stark, Simon Holm

AU - Wiglesworth, Graig

AU - Xella, Stefania

PY - 2018/10/12

Y1 - 2018/10/12

N2 - This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a W boson and a b-quark are significant. Events with exactly two leptons (ee, μμ, or eμ) and two b-tagged jets that satisfy a multiparticle invariant mass requirement are selected from 36.1 fb-1 of proton-proton collision data taken at s=13 TeV with the ATLAS detector at the LHC in 2015 and 2016. The results are compared with predictions from simulations using various strategies for the interference. The standard prescriptions for interference modeling are significantly different from each other but are within 2σ of the data. State-of-the-art predictions that naturally incorporate interference effects provide the best description of the data in the measured region of phase space most sensitive to these effects. These results provide an important constraint on interference models and will guide future model development and tuning.

AB - This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a W boson and a b-quark are significant. Events with exactly two leptons (ee, μμ, or eμ) and two b-tagged jets that satisfy a multiparticle invariant mass requirement are selected from 36.1 fb-1 of proton-proton collision data taken at s=13 TeV with the ATLAS detector at the LHC in 2015 and 2016. The results are compared with predictions from simulations using various strategies for the interference. The standard prescriptions for interference modeling are significantly different from each other but are within 2σ of the data. State-of-the-art predictions that naturally incorporate interference effects provide the best description of the data in the measured region of phase space most sensitive to these effects. These results provide an important constraint on interference models and will guide future model development and tuning.

U2 - 10.1103/PhysRevLett.121.152002

DO - 10.1103/PhysRevLett.121.152002

M3 - Journal article

C2 - 30362803

SN - 0031-9007

VL - 121

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 152002

ER -

Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in pp Collisions at root s=13 TeV with the ATLAS Detector

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