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Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector. / Ali, Hanadi; Alsolami, Zainab; Barton, A.E. et al.
In: Physical Review D, Vol. 110, No. 11, 112004, 02.12.2024.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Ali, H, Alsolami, Z, Barton, AE, Borissov, G, Bouhova-Thacker, EV, Ferguson, RAM, Ferrando, J, Fox, H, Hagan, A, Henderson, RCW, Jones, RWL, Kartvelishvili, V, Love, PA, Marshall, EJ, Meng, L, Muenstermann, D, Ribaric, N, Sampson, E, Smizanska, M, Spinali, S & Wharton, AM 2024, 'Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector', Physical Review D, vol. 110, no. 11, 112004. https://doi.org/10.1103/physrevd.110.112004

APA

Ali, H., Alsolami, Z., Barton, A. E., Borissov, G., Bouhova-Thacker, E. V., Ferguson, R. A. M., Ferrando, J., Fox, H., Hagan, A., Henderson, R. C. W., Jones, R. W. L., Kartvelishvili, V., Love, P. A., Marshall, E. J., Meng, L., Muenstermann, D., Ribaric, N., Sampson, E., Smizanska, M., ... Wharton, A. M. (2024). Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector. Physical Review D, 110(11), Article 112004. https://doi.org/10.1103/physrevd.110.112004

Vancouver

Ali H, Alsolami Z, Barton AE, Borissov G, Bouhova-Thacker EV, Ferguson RAM et al. Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector. Physical Review D. 2024 Dec 2;110(11):112004. doi: 10.1103/physrevd.110.112004

Author

Ali, Hanadi ; Alsolami, Zainab ; Barton, A.E. et al. / Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector. In: Physical Review D. 2024 ; Vol. 110, No. 11.

Bibtex

@article{05659084ddb7498e801b31df596865b7,
title = "Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector",
abstract = "A search for heavy right-handed Majorana neutrinos is performed with the ATLAS detector at the CERN Large Hadron Collider, using the 140 fb{\^a}ˆ{\textquoteright}1 of proton{\^a}€“proton collision data at s=13 TeV collected during Run 2. This search targets tt{\^A}¯ production, in which both top quarks decay into a bottom quark and a W boson, where one of the W bosons decays hadronically and the other decays into an electron or muon and a heavy neutral lepton. The heavy neutral lepton is identified through a decay into an electron or muon and another W boson, resulting in a pair of same-charge same-flavor leptons in the final state. This paper presents the first search for heavy neutral leptons in the mass range of 15{\^a}€“75 GeV using tt{\^A}¯ events. No significant excess is observed over the background expectation, and upper limits are placed on the signal cross sections. Assuming a benchmark scenario of the phenomenological type-I seesaw model, these cross section limits are then translated into upper limits on the mixing parameters of the heavy Majorana neutrino with Standard Model neutrinos. ",
author = "Hanadi Ali and Zainab Alsolami and A.E. Barton and G. Borissov and E.V. Bouhova-Thacker and R.A.M. Ferguson and James Ferrando and H. Fox and Alina Hagan and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and P.A. Love and E.J. Marshall and L. Meng and D. Muenstermann and N. Ribaric and Elliot Sampson and M. Smizanska and S. Spinali and A.M. Wharton",
year = "2024",
month = dec,
day = "2",
doi = "10.1103/physrevd.110.112004",
language = "English",
volume = "110",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "11",

}

RIS

TY - JOUR

T1 - Search for heavy right-handed Majorana neutrinos in the decay of top quarks produced in proton-proton collisions at s=13 TeV with the ATLAS detector

AU - Ali, Hanadi

AU - Alsolami, Zainab

AU - Barton, A.E.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Ferguson, R.A.M.

AU - Ferrando, James

AU - Fox, H.

AU - Hagan, Alina

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Love, P.A.

AU - Marshall, E.J.

AU - Meng, L.

AU - Muenstermann, D.

AU - Ribaric, N.

AU - Sampson, Elliot

AU - Smizanska, M.

AU - Spinali, S.

AU - Wharton, A.M.

PY - 2024/12/2

Y1 - 2024/12/2

N2 - A search for heavy right-handed Majorana neutrinos is performed with the ATLAS detector at the CERN Large Hadron Collider, using the 140 fb−1 of proton–proton collision data at s=13 TeV collected during Run 2. This search targets tt¯ production, in which both top quarks decay into a bottom quark and a W boson, where one of the W bosons decays hadronically and the other decays into an electron or muon and a heavy neutral lepton. The heavy neutral lepton is identified through a decay into an electron or muon and another W boson, resulting in a pair of same-charge same-flavor leptons in the final state. This paper presents the first search for heavy neutral leptons in the mass range of 15–75 GeV using tt¯ events. No significant excess is observed over the background expectation, and upper limits are placed on the signal cross sections. Assuming a benchmark scenario of the phenomenological type-I seesaw model, these cross section limits are then translated into upper limits on the mixing parameters of the heavy Majorana neutrino with Standard Model neutrinos.

AB - A search for heavy right-handed Majorana neutrinos is performed with the ATLAS detector at the CERN Large Hadron Collider, using the 140 fb−1 of proton–proton collision data at s=13 TeV collected during Run 2. This search targets tt¯ production, in which both top quarks decay into a bottom quark and a W boson, where one of the W bosons decays hadronically and the other decays into an electron or muon and a heavy neutral lepton. The heavy neutral lepton is identified through a decay into an electron or muon and another W boson, resulting in a pair of same-charge same-flavor leptons in the final state. This paper presents the first search for heavy neutral leptons in the mass range of 15–75 GeV using tt¯ events. No significant excess is observed over the background expectation, and upper limits are placed on the signal cross sections. Assuming a benchmark scenario of the phenomenological type-I seesaw model, these cross section limits are then translated into upper limits on the mixing parameters of the heavy Majorana neutrino with Standard Model neutrinos.

U2 - 10.1103/physrevd.110.112004

DO - 10.1103/physrevd.110.112004

M3 - Journal article

VL - 110

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 11

M1 - 112004

ER -