Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ-lepton with the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-023-12104-7

Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ-lepton with the ATLAS detector

ATLAS Collaboration

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Abstract

A search for pair-produced scalar or vector leptoquarks decaying into a b-quark and a τ-lepton is presented using the full LHC Run 2 (2015–2018) data sample of 139 fb^{- 1} collected with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV. Events in which at least one τ -lepton decays hadronically are considered, and multivariate discriminants are used to extract the signals. No significant deviations from the Standard Model expectation are observed and 95% confidence-level upper limits on the production cross-section are derived as a function of leptoquark mass and branching ratio B into a τ-lepton and b-quark. For scalar leptoquarks, masses below 1460 GeV are excluded assuming B = 100 %, while for vector leptoquarks the corresponding limit is 1650 GeV (1910 GeV) in the minimal-coupling (Yang–Mills) scenario.

Original language	English
Article number	1075
Pages (from-to)	1-35
Number of pages	35
Journal	European Physical Journal C
Volume	83
Issue number	11
DOIs	https://doi.org/10.1140/epjc/s10052-023-12104-7
Publication status	Published - Nov 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.

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10.1140/epjc/s10052-023-12104-7Licence: CC BY

Publisher version (open access)Final published version, 5.75 MBLicence: CC BY

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@article{30b7ccc4056549c5aff03b553df56ea0,

title = "Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ-lepton with the ATLAS detector",

abstract = "A search for pair-produced scalar or vector leptoquarks decaying into a b-quark and a τ-lepton is presented using the full LHC Run 2 (2015–2018) data sample of 139 fb- 1 collected with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV. Events in which at least one τ -lepton decays hadronically are considered, and multivariate discriminants are used to extract the signals. No significant deviations from the Standard Model expectation are observed and 95\% confidence-level upper limits on the production cross-section are derived as a function of leptoquark mass and branching ratio B into a τ-lepton and b-quark. For scalar leptoquarks, masses below 1460 GeV are excluded assuming B = 100 \%, while for vector leptoquarks the corresponding limit is 1650 GeV (1910 GeV) in the minimal-coupling (Yang–Mills) scenario.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and K. Abeling and Abidi, \{S. H.\} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Hoffman, \{A. C.Abusleme\} and Acharya, \{B. S.\} and Bourdarios, \{C. Adam\} 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 Tamlihat, \{M. Ait\} and B. Aitbenchikh and I. Aizenberg and M. Akbiyik and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and Khoury, \{K. Al\} 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 Flores, \{C. A.Allendes\} and Allport, \{P. P.\} and A. Aloisio and F. Alonso and C. Alpigiani and Estevez, \{M. Alvarez\} and Fernandez, \{A. Alvarez\} and Alviggi, \{M. G.\} and M. Aly and Coutinho, \{Y. Amaral\} and A. Ambler and C. Amelung and M. Amerl and Ames, \{C. G.\} and D. Amidei and \{Amor Dos Santos\}, \{S. P.\} 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 Bella, \{L. Aperio\} 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 Tame, \{Z. P.Arrubarrena\} 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 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 E. Bakos and \{Bakshi Gupta\}, D. 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 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. 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 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 Belyaev, \{N. L.\} and D. Benchekroun and F. Bendebba and Y. Benhammou and M. Benoit and Bensinger, \{J. R.\} and S. Bentvelsen and L. Beresford and M. Beretta 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 A. Betti and Bevan, \{A. J.\} and M. Bhamjee and S. Bhatta and Bhattacharya, \{D. S.\} and P. Bhattarai and Bhopatkar, \{V. S.\} and R. Bi and Bianchi, \{R. M.\} 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 = nov,

doi = "10.1140/epjc/s10052-023-12104-7",

language = "English",

volume = "83",

pages = "1--35",

journal = "European Physical Journal C",

issn = "1434-6052",

publisher = "Springer, Springer Nature",

number = "11",

}

TY - JOUR

T1 - Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ-lepton with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abeling, K.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Hoffman, A. C.Abusleme

AU - Acharya, B. S.

AU - Bourdarios, C. Adam

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 - Tamlihat, M. Ait

AU - Aitbenchikh, B.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Khoury, K. Al

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 - Flores, C. A.Allendes

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Estevez, M. Alvarez

AU - Fernandez, A. Alvarez

AU - Alviggi, M. G.

AU - Aly, M.

AU - Coutinho, Y. Amaral

AU - Ambler, A.

AU - Amelung, C.

AU - Amerl, M.

AU - Ames, C. G.

AU - Amidei, D.

AU - Amor Dos Santos, S. P.

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 - Bella, L. Aperio

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 - Tame, Z. P.Arrubarrena

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 - 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 - Bakos, E.

AU - Bakshi Gupta, D.

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 - 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 - 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 - 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 - Belyaev, N. L.

AU - Benchekroun, D.

AU - Bendebba, F.

AU - Benhammou, Y.

AU - Benoit, M.

AU - Bensinger, J. R.

AU - Bentvelsen, S.

AU - Beresford, L.

AU - Beretta, M.

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 - Betti, A.

AU - Bevan, A. J.

AU - Bhamjee, M.

AU - Bhatta, S.

AU - Bhattacharya, D. S.

AU - Bhattarai, P.

AU - Bhopatkar, V. S.

AU - Bi, R.

AU - Bianchi, R. M.

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 - 2023/11

Y1 - 2023/11

N2 - A search for pair-produced scalar or vector leptoquarks decaying into a b-quark and a τ-lepton is presented using the full LHC Run 2 (2015–2018) data sample of 139 fb- 1 collected with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV. Events in which at least one τ -lepton decays hadronically are considered, and multivariate discriminants are used to extract the signals. No significant deviations from the Standard Model expectation are observed and 95% confidence-level upper limits on the production cross-section are derived as a function of leptoquark mass and branching ratio B into a τ-lepton and b-quark. For scalar leptoquarks, masses below 1460 GeV are excluded assuming B = 100 %, while for vector leptoquarks the corresponding limit is 1650 GeV (1910 GeV) in the minimal-coupling (Yang–Mills) scenario.

AB - A search for pair-produced scalar or vector leptoquarks decaying into a b-quark and a τ-lepton is presented using the full LHC Run 2 (2015–2018) data sample of 139 fb- 1 collected with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV. Events in which at least one τ -lepton decays hadronically are considered, and multivariate discriminants are used to extract the signals. No significant deviations from the Standard Model expectation are observed and 95% confidence-level upper limits on the production cross-section are derived as a function of leptoquark mass and branching ratio B into a τ-lepton and b-quark. For scalar leptoquarks, masses below 1460 GeV are excluded assuming B = 100 %, while for vector leptoquarks the corresponding limit is 1650 GeV (1910 GeV) in the minimal-coupling (Yang–Mills) scenario.

UR - https://www.scopus.com/pages/publications/85180745981

U2 - 10.1140/epjc/s10052-023-12104-7

DO - 10.1140/epjc/s10052-023-12104-7

M3 - Article

AN - SCOPUS:85180745981

SN - 1434-6052

VL - 83

SP - 1

EP - 35

JO - European Physical Journal C

JF - European Physical Journal C

IS - 11

M1 - 1075

ER -

Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ-lepton with the ATLAS detector

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