Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=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; J. A. Aguilar-Saavedra; F. Ahmadov; Milena Bajic; Alejandro Alonso Diaz; Geert-Jan Besjes; Mogens Dam; Flavia de Almeida Dias; Gorm Aske Gram Krohn Galster; Peter Henrik Hansen; Jørn Dines Hansen; Jørgen Beck Hansen; James William Monk; Simon Holm Stark; Fabian A.J. Thiele; Troels Christian Petersen; Graig Wiglesworth; Stefania Xella

doi:10.1007/JHEP12(2018)039

Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=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, J. A. Aguilar-Saavedra, F. Ahmadov, Milena Bajic, Alejandro Alonso Diaz, Geert-Jan Besjes, Mogens Dam, Flavia de Almeida Dias, Gorm Aske Gram Krohn Galster, Peter Henrik Hansen, Jørn Dines Hansen, Jørgen Beck Hansen, James William Monk, Simon Holm Stark, Fabian A.J. Thiele, Troels Christian Petersen, Graig Wiglesworth, Stefania Xella

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Abstract

A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb⁻¹ of pp collisions at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No significant excess is found and limits are set on vector-like quark, four-top-quark, and same-sign top-quark pair production. The observed (expected) 95% CL mass limits for a vector-like T- and B-quark singlet are m_T > 0.98 (0.99) TeV and m_B > 1.00 (1.01) TeV respectively. Limits on the production of the vector-like T_5/3-quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T_5/3-quark is (expected to be) 1.19 (1.21) TeV. The Standard Model four-top-quark production cross-section upper limit is (expected to be) 69 (29) fb. Constraints are also set on exotic four-top-quark production models. Finally, limits are set on same-sign top-quark pair production. The upper limit on uu → tt production is (expected to be) 89 (59) fb for a mediator mass of 1 TeV, and a dark-matter interpretation is also derived, excluding a mediator of 3 TeV with a dark-sector coupling of 1.0 and a coupling to ordinary matter above 0.31.[Figure not available: see fulltext.]

Originalsprog	Engelsk
Artikelnummer	039
Tidsskrift	The Journal of High Energy Physics
Vol/bind	2018
Udgave nummer	12
Antal sider	56
ISSN	1126-6708
DOI	https://doi.org/10.1007/JHEP12(2018)039
Status	Udgivet - 1 dec. 2018

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10.1007/JHEP12(2018)039Licens: CC BY

Aaboud2018_Article_SearchForNewPhenomenaInEventsWForlagets udgivne version, 1,26 MBLicens: CC BY

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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). Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=13 TeV with the ATLAS detector. The Journal of High Energy Physics, 2018(12), Artikel 039. https://doi.org/10.1007/JHEP12(2018)039

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, Aguilar-Saavedra, JA, Ahmadov, F, Bajic, M, Alonso Diaz, A, Besjes, G-J, Dam, M, de Almeida Dias, F, Galster, GAGK, Hansen, PH , Hansen, JD , Hansen, JB, Monk, JW, Stark, SH, Thiele, FAJ, Petersen, TC , Wiglesworth, G & Xella, S 2018, 'Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=13 TeV with the ATLAS detector', The Journal of High Energy Physics, bind 2018, nr. 12, 039. https://doi.org/10.1007/JHEP12(2018)039

@article{d336129bcd7c4b84b4b37774fc6fcb83,

title = "Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=13 TeV with the ATLAS detector",

abstract = "A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb−1 of pp collisions at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No significant excess is found and limits are set on vector-like quark, four-top-quark, and same-sign top-quark pair production. The observed (expected) 95% CL mass limits for a vector-like T- and B-quark singlet are mT > 0.98 (0.99) TeV and mB > 1.00 (1.01) TeV respectively. Limits on the production of the vector-like T5/3-quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T5/3-quark is (expected to be) 1.19 (1.21) TeV. The Standard Model four-top-quark production cross-section upper limit is (expected to be) 69 (29) fb. Constraints are also set on exotic four-top-quark production models. Finally, limits are set on same-sign top-quark pair production. The upper limit on uu → tt production is (expected to be) 89 (59) fb for a mediator mass of 1 TeV, and a dark-matter interpretation is also derived, excluding a mediator of 3 TeV with a dark-sector coupling of 1.0 and a coupling to ordinary matter above 0.31.[Figure not available: see fulltext.]",

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 Aguilar-Saavedra, {J. A.} and F. Ahmadov and Milena Bajic and {Alonso Diaz}, Alejandro and Geert-Jan Besjes and Mogens Dam and {de Almeida Dias}, Flavia and Galster, {Gorm Aske Gram Krohn} and Hansen, {Peter Henrik} and Hansen, {J{\o}rn Dines} and Hansen, {J{\o}rgen Beck} and Monk, {James William} and Stark, {Simon Holm} and Thiele, {Fabian A.J.} and Petersen, {Troels Christian} and Graig Wiglesworth and Stefania Xella",

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doi = "10.1007/JHEP12(2018)039",

language = "English",

volume = "2018",

journal = "The Journal of High Energy Physics",

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TY - JOUR

T1 - Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=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 - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Bajic, Milena

AU - Alonso Diaz, Alejandro

AU - Besjes, Geert-Jan

AU - Dam, Mogens

AU - de Almeida Dias, Flavia

AU - Galster, Gorm Aske Gram Krohn

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Hansen, Jørgen Beck

AU - Monk, James William

AU - Stark, Simon Holm

AU - Thiele, Fabian A.J.

AU - Petersen, Troels Christian

AU - Wiglesworth, Graig

AU - Xella, Stefania

PY - 2018/12/1

Y1 - 2018/12/1

N2 - A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb−1 of pp collisions at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No significant excess is found and limits are set on vector-like quark, four-top-quark, and same-sign top-quark pair production. The observed (expected) 95% CL mass limits for a vector-like T- and B-quark singlet are mT > 0.98 (0.99) TeV and mB > 1.00 (1.01) TeV respectively. Limits on the production of the vector-like T5/3-quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T5/3-quark is (expected to be) 1.19 (1.21) TeV. The Standard Model four-top-quark production cross-section upper limit is (expected to be) 69 (29) fb. Constraints are also set on exotic four-top-quark production models. Finally, limits are set on same-sign top-quark pair production. The upper limit on uu → tt production is (expected to be) 89 (59) fb for a mediator mass of 1 TeV, and a dark-matter interpretation is also derived, excluding a mediator of 3 TeV with a dark-sector coupling of 1.0 and a coupling to ordinary matter above 0.31.[Figure not available: see fulltext.]

AB - A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb−1 of pp collisions at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No significant excess is found and limits are set on vector-like quark, four-top-quark, and same-sign top-quark pair production. The observed (expected) 95% CL mass limits for a vector-like T- and B-quark singlet are mT > 0.98 (0.99) TeV and mB > 1.00 (1.01) TeV respectively. Limits on the production of the vector-like T5/3-quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T5/3-quark is (expected to be) 1.19 (1.21) TeV. The Standard Model four-top-quark production cross-section upper limit is (expected to be) 69 (29) fb. Constraints are also set on exotic four-top-quark production models. Finally, limits are set on same-sign top-quark pair production. The upper limit on uu → tt production is (expected to be) 89 (59) fb for a mediator mass of 1 TeV, and a dark-matter interpretation is also derived, excluding a mediator of 3 TeV with a dark-sector coupling of 1.0 and a coupling to ordinary matter above 0.31.[Figure not available: see fulltext.]

U2 - 10.1007/JHEP12(2018)039

DO - 10.1007/JHEP12(2018)039

M3 - Journal article

SN - 1126-6708

VL - 2018

JO - The Journal of High Energy Physics

JF - The Journal of High Energy Physics

IS - 12

M1 - 039

ER -

Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=13 TeV with the ATLAS detector

Abstract

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