Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector

ATLAS Collaboration; ATLAS Collaboration

doi:10.1140/epjc/s10052-021-09439-4

Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector

ATLAS Collaboration, ATLAS Collaboration

Research output: Contribution to journal › Article › peer-review

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Abstract

Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson (tt¯ Z) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on √s = 13 TeV proton–proton collision data with an integrated luminosity of 139 fb^-1, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σ_t_t¯_Z= 0.99 ± 0.05 (stat.) ± 0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the tt¯ Z system. Both absolute and normalised differential cross-section measurements are performed at particle and parton levels for specific fiducial volumes and are compared with theoretical predictions at different levels of precision, based on a χ²/ ndf and p value computation. Overall, good agreement is observed between the unfolded data and the predictions.

Original language	English
Article number	737
Pages (from-to)	1-43
Number of pages	43
Journal	European Physical Journal C
Volume	81
Issue number	8
DOIs	https://doi.org/10.1140/epjc/s10052-021-09439-4
Publication status	Published - Aug 2021
Externally published	Yes

Bibliographical note

Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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10.1140/epjc/s10052-021-09439-4Licence: CC BY

Publisher version (open access)Final published version, 4.62 MBLicence: CC BY

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@article{99a0e92dcaad4b0ea33052dc636285db,

title = "Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector",

abstract = "Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson (tt¯ Z) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on √s = 13 TeV proton–proton collision data with an integrated luminosity of 139 fb-1, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σtt¯Z = 0.99 ± 0.05 (stat.) ± 0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the tt¯ Z system. Both absolute and normalised differential cross-section measurements are performed at particle and parton levels for specific fiducial volumes and are compared with theoretical predictions at different levels of precision, based on a χ2/ ndf and p value computation. Overall, good agreement is observed between the unfolded data and the predictions.",

author = "{ATLAS Collaboration} and {ATLAS Collaboration} and 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 L. Adam and Bourdarios, {C. Adam} and L. Adamczyk and L. Adamek and J. Adelman 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 A. Ahmad and F. Ahmadov and Ahmed, {W. S.} and X. Ai and G. Aielli and S. Akatsuka and M. Akbiyik 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 T. Alexopoulos and A. Alfonsi and F. Alfonsi and M. Alhroob and B. Ali and S. Ali and M. Aliev and G. Alimonti and C. Allaire and Allbrooke, {B. M.M.} and Allen, {B. W.} and Allport, {P. P.} and A. Aloisio and F. Alonso and C. Alpigiani and Camelia, {E. Alunno} and Estevez, {M. Alvarez} and Alviggi, {M. G.} and Coutinho, {Y. Amaral} and A. Ambler and L. Ambroz and C. Amelung and D. Amidei and Santos, {S. P.Amor Dos} and S. Amoroso and Amrouche, {C. S.} and F. An and C. Anastopoulos and N. Andari and T. Andeen and Anders, {J. K.} and Andrean, {S. Y.} and A. Andreazza and V. Andrei and Anelli, {C. R.} and S. Angelidakis and A. Angerami and Anisenkov, {A. V.} and A. Annovi and C. Antel and Anthony, {M. T.} and E. Antipov and M. Antonelli and Antrim, {D. J.A.} and F. Anulli and M. Aoki and Pozo, {J. A.Aparisi} and Aparo, {M. A.} and Bella, {L. Aperio} and N. Aranzabal and Ferraz, {V. Araujo} and Pereira, {R. Araujo} and C. Arcangeletti and Arce, {A. T.H.} and Arguin, {J. F.} and S. Argyropoulos and Arling, {J. H.} and Armbruster, {A. J.} and A. Armstrong and O. Arnaez and H. Arnold and Tame, {Z. P.Arrubarrena} and G. Artoni and H. Asada and K. Asai and S. Asai and T. Asawatavonvanich and Asbah, {N. A.} and Asimakopoulou, {E. M.} and L. Asquith and J. Assahsah and K. Assamagan and R. Astalos and Atkin, {R. J.} and M. Atkinson and Atlay, {N. B.} and H. Atmani and Atmasiddha, {P. A.} and K. Augsten and Austrup, {V. A.} and G. Avolio and Ayoub, {M. K.} and G. Azuelos and D. Babal and H. Bachacou and K. Bachas and F. Backman and P. Bagnaia and H. Bahrasemani and Bailey, {A. J.} and Bailey, {V. R.} and Baines, {J. T.} and C. Bakalis and Baker, {O. K.} and Bakker, {P. J.} and E. Bakos and Gupta, {D. Bakshi} and S. Balaji and R. Balasubramanian and Baldin, {E. M.} and P. Balek and F. Balli and Balunas, {W. K.} and J. Balz and E. Banas and M. Bandieramonte and A. Bandyopadhyay and Sw Banerjee and L. Barak and Barbe, {W. M.} and Barberio, {E. L.} and D. Barberis and M. Barbero and G. Barbour and T. Barillari and Barisits, {M. S.} and J. Barkeloo and T. Barklow and R. Barnea and Barnett, {B. M.} and Barnett, {R. M.} and Z. Barnovska-Blenessy and A. Baroncelli and G. Barone and Barr, {A. J.} and Navarro, {L. Barranco} and F. Barreiro and {da Costa}, {J. Barreiro Guimar{\~a}es} and U. Barron and S. Barsov and F. Bartels and R. Bartoldus and G. Bartolini and Barton, {A. E.} and P. Bartos and A. Basalaev and A. Basan and A. Bassalat and Basso, {M. J.} and Bates, {R. L.} and S. Batlamous and Batley, {J. R.} and B. Batool and M. Battaglia and M. Bauce and F. Bauer and P. Bauer and Bawa, {H. S.} and A. Bayirli and Beacham, {J. B.} and T. Beau and Beauchemin, {P. H.} and F. Becherer and P. Bechtle and Beck, {H. C.} and Beck, {H. P.} and K. Becker and C. Becot and Beddall, {A. J.} and Beddall, {A. J.} and Bednyakov, {V. A.} and M. Bedognetti and Bee, {C. P.} and Beermann, {T. A.} and M. Begalli and M. Begel and A. Behera and Behr, {J. K.} and F. Beisiegel and M. Belfkir and Bell, {A. S.} and G. Bella and L. Bellagamba and A. Bellerive and P. Bellos and K. Beloborodov and K. Belotskiy and Belyaev, {N. L.} and D. Benchekroun and N. Benekos and Y. Benhammou and Benjamin, {D. P.} and M. Benoit and Bensinger, {J. R.} and S. Bentvelsen and L. Beresford and M. Beretta and D. Berge and Kuutmann, {E. Bergeaas} and N. Berger and B. Bergmann and Bergsten, {L. J.} and J. Beringer and S. Berlendis and G. Bernardi and C. Bernius and Bernlochner, {F. U.} and T. Berry and P. Berta and A. Berthold and Bertram, {I. A.} and Bylund, {O. Bessidskaia} and J. Shojaii",

note = "Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2021",

month = aug,

doi = "10.1140/epjc/s10052-021-09439-4",

language = "English",

volume = "81",

pages = "1--43",

journal = "European Physical Journal C",

issn = "1434-6052",

publisher = "Springer, Springer Nature",

number = "8",

}

TY - JOUR

T1 - Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector

AU - ATLAS Collaboration

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 - Adam, L.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

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 - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ai, X.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Akbiyik, M.

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 - Alexopoulos, T.

AU - Alfonsi, A.

AU - Alfonsi, F.

AU - Alhroob, M.

AU - Ali, B.

AU - Ali, S.

AU - Aliev, M.

AU - Alimonti, G.

AU - Allaire, C.

AU - Allbrooke, B. M.M.

AU - Allen, B. W.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Camelia, E. Alunno

AU - Estevez, M. Alvarez

AU - Alviggi, M. G.

AU - Coutinho, Y. Amaral

AU - Ambler, A.

AU - Ambroz, L.

AU - Amelung, C.

AU - Amidei, D.

AU - Santos, S. P.Amor Dos

AU - Amoroso, S.

AU - Amrouche, C. S.

AU - An, F.

AU - Anastopoulos, C.

AU - Andari, N.

AU - Andeen, T.

AU - Anders, J. K.

AU - Andrean, S. Y.

AU - Andreazza, A.

AU - Andrei, V.

AU - Anelli, C. R.

AU - Angelidakis, S.

AU - Angerami, A.

AU - Anisenkov, A. V.

AU - Annovi, A.

AU - Antel, C.

AU - Anthony, M. T.

AU - Antipov, E.

AU - Antonelli, M.

AU - Antrim, D. J.A.

AU - Anulli, F.

AU - Aoki, M.

AU - Pozo, J. A.Aparisi

AU - Aparo, M. A.

AU - Bella, L. Aperio

AU - Aranzabal, N.

AU - Ferraz, V. Araujo

AU - Pereira, R. Araujo

AU - Arcangeletti, C.

AU - Arce, A. T.H.

AU - Arguin, J. F.

AU - Argyropoulos, S.

AU - Arling, J. H.

AU - Armbruster, A. J.

AU - Armstrong, A.

AU - Arnaez, O.

AU - Arnold, H.

AU - Tame, Z. P.Arrubarrena

AU - Artoni, G.

AU - Asada, H.

AU - Asai, K.

AU - Asai, S.

AU - Asawatavonvanich, T.

AU - Asbah, N. A.

AU - Asimakopoulou, E. M.

AU - Asquith, L.

AU - Assahsah, J.

AU - Assamagan, K.

AU - Astalos, R.

AU - Atkin, R. J.

AU - Atkinson, M.

AU - Atlay, N. B.

AU - Atmani, H.

AU - Atmasiddha, P. A.

AU - Augsten, K.

AU - Austrup, V. A.

AU - Avolio, G.

AU - Ayoub, M. K.

AU - Azuelos, G.

AU - Babal, D.

AU - Bachacou, H.

AU - Bachas, K.

AU - Backman, F.

AU - Bagnaia, P.

AU - Bahrasemani, H.

AU - Bailey, A. J.

AU - Bailey, V. R.

AU - Baines, J. T.

AU - Bakalis, C.

AU - Baker, O. K.

AU - Bakker, P. J.

AU - Bakos, E.

AU - Gupta, D. Bakshi

AU - Balaji, S.

AU - Balasubramanian, R.

AU - Baldin, E. M.

AU - Balek, P.

AU - Balli, F.

AU - Balunas, W. K.

AU - Balz, J.

AU - Banas, E.

AU - Bandieramonte, M.

AU - Bandyopadhyay, A.

AU - Banerjee, Sw

AU - Barak, L.

AU - Barbe, W. M.

AU - Barberio, E. L.

AU - Barberis, D.

AU - Barbero, M.

AU - Barbour, G.

AU - Barillari, T.

AU - Barisits, M. S.

AU - Barkeloo, J.

AU - Barklow, T.

AU - Barnea, R.

AU - Barnett, B. M.

AU - Barnett, R. M.

AU - Barnovska-Blenessy, Z.

AU - Baroncelli, A.

AU - Barone, G.

AU - Barr, A. J.

AU - Navarro, L. Barranco

AU - Barreiro, F.

AU - da Costa, J. Barreiro Guimarães

AU - Barron, U.

AU - Barsov, S.

AU - Bartels, F.

AU - Bartoldus, R.

AU - Bartolini, G.

AU - Barton, A. E.

AU - Bartos, P.

AU - Basalaev, A.

AU - Basan, A.

AU - Bassalat, A.

AU - Basso, M. J.

AU - Bates, R. L.

AU - Batlamous, S.

AU - Batley, J. R.

AU - Batool, B.

AU - Battaglia, M.

AU - Bauce, M.

AU - Bauer, F.

AU - Bauer, P.

AU - Bawa, H. S.

AU - Bayirli, A.

AU - Beacham, J. B.

AU - Beau, T.

AU - Beauchemin, P. H.

AU - Becherer, F.

AU - Bechtle, P.

AU - Beck, H. C.

AU - Beck, H. P.

AU - Becker, K.

AU - Becot, C.

AU - Beddall, A. J.

AU - Bednyakov, V. A.

AU - Bedognetti, M.

AU - Bee, C. P.

AU - Beermann, T. A.

AU - Begalli, M.

AU - Begel, M.

AU - Behera, A.

AU - Behr, J. K.

AU - Beisiegel, F.

AU - Belfkir, M.

AU - Bell, A. S.

AU - Bella, G.

AU - Bellagamba, L.

AU - Bellerive, A.

AU - Bellos, P.

AU - Beloborodov, K.

AU - Belotskiy, K.

AU - Belyaev, N. L.

AU - Benchekroun, D.

AU - Benekos, N.

AU - Benhammou, Y.

AU - Benjamin, D. P.

AU - Benoit, M.

AU - Bensinger, J. R.

AU - Bentvelsen, S.

AU - Beresford, L.

AU - Beretta, M.

AU - Berge, D.

AU - Kuutmann, E. Bergeaas

AU - Berger, N.

AU - Bergmann, B.

AU - Bergsten, L. J.

AU - Beringer, J.

AU - Berlendis, S.

AU - Bernardi, G.

AU - Bernius, C.

AU - Bernlochner, F. U.

AU - Berry, T.

AU - Berta, P.

AU - Berthold, A.

AU - Bertram, I. A.

AU - Bylund, O. Bessidskaia

AU - Shojaii, J.

N1 - Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2021/8

Y1 - 2021/8

N2 - Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson (tt¯ Z) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on √s = 13 TeV proton–proton collision data with an integrated luminosity of 139 fb-1, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σtt¯Z = 0.99 ± 0.05 (stat.) ± 0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the tt¯ Z system. Both absolute and normalised differential cross-section measurements are performed at particle and parton levels for specific fiducial volumes and are compared with theoretical predictions at different levels of precision, based on a χ2/ ndf and p value computation. Overall, good agreement is observed between the unfolded data and the predictions.

AB - Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson (tt¯ Z) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on √s = 13 TeV proton–proton collision data with an integrated luminosity of 139 fb-1, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σtt¯Z = 0.99 ± 0.05 (stat.) ± 0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the tt¯ Z system. Both absolute and normalised differential cross-section measurements are performed at particle and parton levels for specific fiducial volumes and are compared with theoretical predictions at different levels of precision, based on a χ2/ ndf and p value computation. Overall, good agreement is observed between the unfolded data and the predictions.

UR - http://www.scopus.com/inward/record.url?scp=85113812326&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-021-09439-4

DO - 10.1140/epjc/s10052-021-09439-4

M3 - Article

AN - SCOPUS:85113812326

SN - 1434-6052

VL - 81

SP - 1

EP - 43

JO - European Physical Journal C

JF - European Physical Journal C

IS - 8

M1 - 737

ER -

Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector

Abstract

Bibliographical note

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