Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into 𝑏⁢ ¯ 𝑏 ⁢𝜏+⁢𝜏− using 𝑝⁢𝑝 collisions at √𝑠=13 TeV with the ATLAS detector

Physics

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Experimental Particle Physics

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https://doi.org/10.1103/physrevd.110.052013
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Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into 𝑏⁢ ¯ 𝑏 ⁢𝜏+⁢𝜏− using 𝑝⁢𝑝 collisions at √𝑠=13 TeV with the ATLAS detector. / The ATLAS collaboration.
In: Physical Review D, Vol. 110, No. 5, 052013, 01.09.2024.

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

Bibtex

@article{447e1753e89b42d9b9d72f279f10b39c,

title = "Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into 𝑏⁢ ¯ 𝑏 ⁢𝜏+⁢𝜏− using 𝑝⁢𝑝 collisions at √𝑠=13 TeV with the ATLAS detector",

abstract = "This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, H{\^a}†{\textquoteright}aa, where one pseudoscalar decays into a b-quark pair and the other decays into a {\"I}„-lepton pair, in the mass range 12{\^a}‰¤ma{\^a}‰¤60 GeV. The analysis uses pp collision data at s=13 TeV collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb{\^a}ˆ{\textquoteright}1. No significant excess above the Standard Model (SM) prediction is observed. Assuming the SM Higgs boson production cross section, the search sets upper limits at 95% confidence level on the branching ratio of Higgs bosons decaying into bb{\^A}¯{\"I}„+{\"I}„{\^a}ˆ{\textquoteright}, B(H{\^a}†{\textquoteright}aa{\^a}†{\textquoteright}bb{\^A}¯{\"I}„+{\"I}„{\^a}ˆ{\textquoteright}), between 2.2% and 3.9% depending on the pseudoscalar mass.",

author = "{The ATLAS collaboration} and Zainab Alsolami and A.E. Barton and G. Borissov and E.V. Bouhova-Thacker and Ruby 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 A.M. Wharton",

year = "2024",

month = sep,

day = "1",

doi = "10.1103/physrevd.110.052013",

language = "English",

volume = "110",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "5",

}

RIS

TY - JOUR

T1 - Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into 𝑏⁢ ¯ 𝑏 ⁢𝜏+⁢𝜏− using 𝑝⁢𝑝 collisions at √𝑠=13 TeV with the ATLAS detector

AU - The ATLAS collaboration

AU - Alsolami, Zainab

AU - Barton, A.E.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Ferguson, Ruby

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 - Wharton, A.M.

PY - 2024/9/1

Y1 - 2024/9/1

N2 - This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, Hâ†’aa, where one pseudoscalar decays into a b-quark pair and the other decays into a Ï„-lepton pair, in the mass range 12â‰¤maâ‰¤60 GeV. The analysis uses pp collision data at s=13 TeV collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fbâˆ’1. No significant excess above the Standard Model (SM) prediction is observed. Assuming the SM Higgs boson production cross section, the search sets upper limits at 95% confidence level on the branching ratio of Higgs bosons decaying into bbÂ¯Ï„+Ï„âˆ’, B(Hâ†’aaâ†’bbÂ¯Ï„+Ï„âˆ’), between 2.2% and 3.9% depending on the pseudoscalar mass.

AB - This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, Hâ†’aa, where one pseudoscalar decays into a b-quark pair and the other decays into a Ï„-lepton pair, in the mass range 12â‰¤maâ‰¤60 GeV. The analysis uses pp collision data at s=13 TeV collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fbâˆ’1. No significant excess above the Standard Model (SM) prediction is observed. Assuming the SM Higgs boson production cross section, the search sets upper limits at 95% confidence level on the branching ratio of Higgs bosons decaying into bbÂ¯Ï„+Ï„âˆ’, B(Hâ†’aaâ†’bbÂ¯Ï„+Ï„âˆ’), between 2.2% and 3.9% depending on the pseudoscalar mass.

U2 - 10.1103/physrevd.110.052013

DO - 10.1103/physrevd.110.052013

M3 - Journal article

VL - 110

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 5

M1 - 052013

ER -

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