Evidence for the charge asymmetry in pp → tt‾ production at √s = 13 TeV with the ATLAS detector

The ATLAS collaboration

doi:10.1007/JHEP08(2023)077

Evidence for the charge asymmetry in pp → tt‾ production at √s = 13 TeV with the ATLAS detector

The ATLAS collaboration

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

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Abstract

Inclusive and differential measurements of the top–antitop (tt‾)charge asymmetry A^t^t‾_C and the leptonic asymmetry A^ll^‾_Care presented in proton–proton collisions at p √s = 13 TeV recordedby the ATLAS experiment at the CERN Large Hadron Collider. The measurement usesthe complete Run 2 dataset, corresponding to an integrated luminosity of 139 fb^-1,combines data in the single-lepton and dilepton channels, and employs reconstructiontechniques adapted to both the resolved and boosted topologies. A Bayesian unfoldingprocedure is performed to correct for detector resolution and acceptanceeffects. The combined inclusive tt‾ charge asymmetry is measuredto be A^t^t‾_C = 0.0068 ± 0.0015, which differs fromzero by 4.7 standard deviations. Differential measurements are performed as afunction of the invariant mass, transverse momentum and longitudinal boost ofthe t¯t system. Both the inclusive and differential measurementsare found to be compatible with the Standard Model predictions, atnext-to-next-to-leading order in quantum chromodynamics perturbation theorywith next-to-leading-order electroweak corrections. The measurements areinterpreted in the framework of the Standard Model effective field theory,placing competitive bounds on several Wilson coefficients.

Original language	English
Article number	77
Pages (from-to)	1-87
Number of pages	89
Journal	Journal of High Energy Physics
Volume	2023
Issue number	8
DOIs	https://doi.org/10.1007/JHEP08(2023)077
Publication status	Published - Aug 2023
Externally published	Yes

Bibliographical note

Copyright the Author(s). 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.

Keywords

Hadron-Hadron Scattering
Top Physics

Access to Document

10.1007/JHEP08(2023)077Licence: CC BY

Publisher version (open access)Final published version, 2.31 MBLicence: CC BY

Cite this

@article{815a61298c47422cb6bd294a08227827,

title = "Evidence for the charge asymmetry in pp → tt‾ production at √s = 13 TeV with the ATLAS detector",

abstract = "Inclusive and differential measurements of the top–antitop (tt‾)charge asymmetry Att‾C and the leptonic asymmetry All‾C are presented in proton–proton collisions at p √s = 13 TeV recordedby the ATLAS experiment at the CERN Large Hadron Collider. The measurement usesthe complete Run 2 dataset, corresponding to an integrated luminosity of 139 fb-1,combines data in the single-lepton and dilepton channels, and employs reconstructiontechniques adapted to both the resolved and boosted topologies. A Bayesian unfoldingprocedure is performed to correct for detector resolution and acceptanceeffects. The combined inclusive tt‾ charge asymmetry is measuredto be Att‾C = 0.0068 ± 0.0015, which differs fromzero by 4.7 standard deviations. Differential measurements are performed as afunction of the invariant mass, transverse momentum and longitudinal boost ofthe t¯t system. Both the inclusive and differential measurementsare found to be compatible with the Standard Model predictions, atnext-to-next-to-leading order in quantum chromodynamics perturbation theorywith next-to-leading-order electroweak corrections. The measurements areinterpreted in the framework of the Standard Model effective field theory,placing competitive bounds on several Wilson coefficients. ",

keywords = "Hadron-Hadron Scattering, Top Physics",

author = "{The ATLAS collaboration} and G. Aad and B. Abbott and Abbott, {D. C.} and K. Abeling and Abidi, {S. H.} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and {Abusleme Hoffman}, {A. C.} and Acharya, {B. S.} and B. Achkar and {Adam Bourdarios}, C. and L. Adamczyk and L. Adamek and Addepalli, {S. V.} and J. Adelman and A. Adiguzel and S. Adorni and T. Adye and Affolder, {A. A.} and Y. Afik and Agaras, {M. N.} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, {J. A.} and A. Ahmad and F. Ahmadov and Ahmed, {W. S.} and S. Ahuja and X. Ai and G. Aielli and I. Aizenberg and M. Akbiyik and {\AA}kesson, {T. P.A.} and Akimov, {A. V.} and {Al Khoury}, K. and Alberghi, {G. L.} and J. Albert and P. Albicocco 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 W. Alkakhi and C. Allaire and Allbrooke, {B. M.M.} and Allport, {P. P.} and A. Aloisio and F. Alonso and C. Alpigiani and {Alunno Camelia}, E. and {Alvarez Estevez}, M. and Alviggi, {M. G.} and M. Aly and {Amaral Coutinho}, Y. and A. Ambler and C. Amelung and M. Amerl and Ames, {C. G.} and D. Amidei and {Amor Dos Santos}, {S. P.} and S. Amoroso and Amos, {K. R.} and V. Ananiev and C. Anastopoulos and T. Andeen and Anders, {J. K.} and Andrean, {S. Y.} and A. Andreazza 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 T. Aoki and {Aparisi Pozo}, {J. A.} and Aparo, {M. A.} and {Aperio Bella}, L. and C. Appelt and N. Aranzabal and {Araujo Ferraz}, V. and C. Arcangeletti and Arce, {A. T.H.} and E. Arena and Arguin, {J. F.} and S. Argyropoulos and Arling, {J. H.} and Armbruster, {A. J.} and O. Arnaez and H. Arnold and {Arrubarrena Tame}, {Z. P.} and G. Artoni and H. Asada and K. Asai and S. Asai and Asbah, {N. A.} 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 S. Auricchio and Auriol, {A. D.} and Austrup, {V. A.} and G. Avner and G. Avolio and K. Axiotis and Ayoub, {M. K.} and G. Azuelos and D. Babal and H. Bachacou and K. Bachas and A. Bachiu and F. Backman and A. Badea and P. Bagnaia and M. Bahmani 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 {Bakshi Gupta}, D. and S. Balaji and R. Balasubramanian and Baldin, {E. M.} and P. Balek and E. Ballabene and F. Balli and Baltes, {L. M.} and Balunas, {W. K.} and J. Balz and E. Banas and M. Bandieramonte and A. Bandyopadhyay and S. Bansal and L. Barak and Barberio, {E. L.} and D. Barberis and M. Barbero and G. Barbour and Barends, {K. N.} and T. Barillari and Barisits, {M. S.} and T. Barklow and Barnett, {R. M.} and P. Baron and {Baron Moreno}, {D. A.} and A. Baroncelli and G. Barone and Barr, {A. J.} and {Barranco Navarro}, L. and F. Barreiro and {Barreiro Guimar{\~a}es da Costa}, J. and U. Barron and {Barros Teixeira}, {M. G.} and S. Barsov and F. Bartels and R. Bartoldus and Barton, {A. E.} and P. Bartos and A. Basalaev and A. Basan and M. Baselga and I. Bashta and A. Bassalat and Basso, {M. J.} and Basson, {C. R.} and Bates, {R. L.} and S. Batlamous and Batley, {J. R.} and B. Batool and M. Battaglia and D. Battulga and M. Bauce and P. Bauer and A. Bayirli and Beacham, {J. B.} and T. Beau and Beauchemin, {P. H.} and F. Becherer and P. Bechtle and Beck, {H. P.} and K. Becker and Beddall, {A. J.} and Bednyakov, {V. A.} and Bee, {C. P.} and Beemster, {L. J.} and Beermann, {T. A.} and M. Begalli and M. Begel and A. Behera and Behr, {J. K.} and {Beirao Da Cruz E Silva}, C. and Beirer, {J. F.} and F. Beisiegel and M. Belfkir 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 F. Bendebba 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 {Bergeaas Kuutmann}, E. and N. Berger and B. Bergmann 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 S. Bethke and J. Shojaii",

note = "Copyright the Author(s). 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 = "2023",

month = aug,

doi = "10.1007/JHEP08(2023)077",

language = "English",

volume = "2023",

pages = "1--87",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer, Springer Nature",

number = "8",

}

TY - JOUR

T1 - Evidence for the charge asymmetry in pp → tt‾ production at √s = 13 TeV with the ATLAS detector

AU - The ATLAS collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abeling, K.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Abusleme Hoffman, A. C.

AU - Acharya, B. S.

AU - Achkar, B.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Adamek, L.

AU - Addepalli, S. V.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adorni, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Al Khoury, K.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

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 - Alkakhi, W.

AU - Allaire, C.

AU - Allbrooke, B. M.M.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Alunno Camelia, E.

AU - Alvarez Estevez, M.

AU - Alviggi, M. G.

AU - Aly, M.

AU - Amaral Coutinho, Y.

AU - Ambler, A.

AU - Amelung, C.

AU - Amerl, M.

AU - Ames, C. G.

AU - Amidei, D.

AU - Amor Dos Santos, S. P.

AU - Amoroso, S.

AU - Amos, K. R.

AU - Ananiev, V.

AU - Anastopoulos, C.

AU - Andeen, T.

AU - Anders, J. K.

AU - Andrean, S. Y.

AU - Andreazza, A.

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 - Aoki, T.

AU - Aparisi Pozo, J. A.

AU - Aparo, M. A.

AU - Aperio Bella, L.

AU - Appelt, C.

AU - Aranzabal, N.

AU - Araujo Ferraz, V.

AU - Arcangeletti, C.

AU - Arce, A. T.H.

AU - Arena, E.

AU - Arguin, J. F.

AU - Argyropoulos, S.

AU - Arling, J. H.

AU - Armbruster, A. J.

AU - Arnaez, O.

AU - Arnold, H.

AU - Arrubarrena Tame, Z. P.

AU - Artoni, G.

AU - Asada, H.

AU - Asai, K.

AU - Asai, S.

AU - Asbah, N. A.

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 - Auricchio, S.

AU - Auriol, A. D.

AU - Austrup, V. A.

AU - Avner, G.

AU - Avolio, G.

AU - Axiotis, K.

AU - Ayoub, M. K.

AU - Azuelos, G.

AU - Babal, D.

AU - Bachacou, H.

AU - Bachas, K.

AU - Bachiu, A.

AU - Backman, F.

AU - Badea, A.

AU - Bagnaia, P.

AU - Bahmani, M.

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 - Bakshi Gupta, D.

AU - Balaji, S.

AU - Balasubramanian, R.

AU - Baldin, E. M.

AU - Balek, P.

AU - Ballabene, E.

AU - Balli, F.

AU - Baltes, L. M.

AU - Balunas, W. K.

AU - Balz, J.

AU - Banas, E.

AU - Bandieramonte, M.

AU - Bandyopadhyay, A.

AU - Bansal, S.

AU - Barak, L.

AU - Barberio, E. L.

AU - Barberis, D.

AU - Barbero, M.

AU - Barbour, G.

AU - Barends, K. N.

AU - Barillari, T.

AU - Barisits, M. S.

AU - Barklow, T.

AU - Barnett, R. M.

AU - Baron, P.

AU - Baron Moreno, D. A.

AU - Baroncelli, A.

AU - Barone, G.

AU - Barr, A. J.

AU - Barranco Navarro, L.

AU - Barreiro, F.

AU - Barreiro Guimarães da Costa, J.

AU - Barron, U.

AU - Barros Teixeira, M. G.

AU - Barsov, S.

AU - Bartels, F.

AU - Bartoldus, R.

AU - Barton, A. E.

AU - Bartos, P.

AU - Basalaev, A.

AU - Basan, A.

AU - Baselga, M.

AU - Bashta, I.

AU - Bassalat, A.

AU - Basso, M. J.

AU - Basson, C. R.

AU - Bates, R. L.

AU - Batlamous, S.

AU - Batley, J. R.

AU - Batool, B.

AU - Battaglia, M.

AU - Battulga, D.

AU - Bauce, M.

AU - Bauer, P.

AU - Bayirli, A.

AU - Beacham, J. B.

AU - Beau, T.

AU - Beauchemin, P. H.

AU - Becherer, F.

AU - Bechtle, P.

AU - Beck, H. P.

AU - Becker, K.

AU - Beddall, A. J.

AU - Bednyakov, V. A.

AU - Bee, C. P.

AU - Beemster, L. J.

AU - Beermann, T. A.

AU - Begalli, M.

AU - Begel, M.

AU - Behera, A.

AU - Behr, J. K.

AU - Beirao Da Cruz E Silva, C.

AU - Beirer, J. F.

AU - Beisiegel, F.

AU - Belfkir, M.

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 - Bendebba, F.

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 - Bergeaas Kuutmann, E.

AU - Berger, N.

AU - Bergmann, B.

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 - Bethke, S.

AU - Shojaii, J.

N1 - Copyright the Author(s). 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 - 2023/8

Y1 - 2023/8

N2 - Inclusive and differential measurements of the top–antitop (tt‾)charge asymmetry Att‾C and the leptonic asymmetry All‾C are presented in proton–proton collisions at p √s = 13 TeV recordedby the ATLAS experiment at the CERN Large Hadron Collider. The measurement usesthe complete Run 2 dataset, corresponding to an integrated luminosity of 139 fb-1,combines data in the single-lepton and dilepton channels, and employs reconstructiontechniques adapted to both the resolved and boosted topologies. A Bayesian unfoldingprocedure is performed to correct for detector resolution and acceptanceeffects. The combined inclusive tt‾ charge asymmetry is measuredto be Att‾C = 0.0068 ± 0.0015, which differs fromzero by 4.7 standard deviations. Differential measurements are performed as afunction of the invariant mass, transverse momentum and longitudinal boost ofthe t¯t system. Both the inclusive and differential measurementsare found to be compatible with the Standard Model predictions, atnext-to-next-to-leading order in quantum chromodynamics perturbation theorywith next-to-leading-order electroweak corrections. The measurements areinterpreted in the framework of the Standard Model effective field theory,placing competitive bounds on several Wilson coefficients.

AB - Inclusive and differential measurements of the top–antitop (tt‾)charge asymmetry Att‾C and the leptonic asymmetry All‾C are presented in proton–proton collisions at p √s = 13 TeV recordedby the ATLAS experiment at the CERN Large Hadron Collider. The measurement usesthe complete Run 2 dataset, corresponding to an integrated luminosity of 139 fb-1,combines data in the single-lepton and dilepton channels, and employs reconstructiontechniques adapted to both the resolved and boosted topologies. A Bayesian unfoldingprocedure is performed to correct for detector resolution and acceptanceeffects. The combined inclusive tt‾ charge asymmetry is measuredto be Att‾C = 0.0068 ± 0.0015, which differs fromzero by 4.7 standard deviations. Differential measurements are performed as afunction of the invariant mass, transverse momentum and longitudinal boost ofthe t¯t system. Both the inclusive and differential measurementsare found to be compatible with the Standard Model predictions, atnext-to-next-to-leading order in quantum chromodynamics perturbation theorywith next-to-leading-order electroweak corrections. The measurements areinterpreted in the framework of the Standard Model effective field theory,placing competitive bounds on several Wilson coefficients.

KW - Hadron-Hadron Scattering

KW - Top Physics

UR - http://www.scopus.com/inward/record.url?scp=85169322582&partnerID=8YFLogxK

U2 - 10.1007/JHEP08(2023)077

DO - 10.1007/JHEP08(2023)077

M3 - Article

AN - SCOPUS:85169322582

SN - 1029-8479

VL - 2023

SP - 1

EP - 87

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

M1 - 77

ER -

Evidence for the charge asymmetry in pp → tt‾ production at √s = 13 TeV with the ATLAS detector

Abstract

Bibliographical note

Keywords

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