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Type: Journal article
Title: Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s =13 TeV
Other Titles: Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at root s =13 TeV
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
Abouzeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adersberger, M.
et al.
Citation: Physical Review D, 2020; 102(11):112006-1-112006-28
Publisher: American Physical Society (APS)
Issue Date: 2020
ISSN: 2470-0010
Statement of
G. Aad … D. Duvnjak … P. Jackson … A.X.Y. Kong … J.L. Oliver … A. Petridis ... T. A. Ruggeri ... A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract: This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into b-quark pairs, H→aa→(b¯b)(b¯b), using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy √s=13  TeV. This search focuses on the range 15  GeV ≤ mₐ ≤ 30  GeV, where the decay products are collimated; it is complementary to a previous search in the same final state targeting the range 20  GeV ≤ mₐ ≤ 60  GeV, where the decay products are well separated. A novel strategy for the identification of the a→b¯b decays is deployed to enhance the efficiency for topologies with small separation angles. The search is performed with 36  fb⁻¹ of integrated luminosity collected in 2015 and 2016 and sets upper limits on the production cross section of H→aa→(b¯b)(b¯b), where the Higgs boson is produced in association with a Z boson.
Rights: © 2020 CERN, for the ATLAS Collaboration. the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.
RMID: 1000031882
DOI: 10.1103/PhysRevD.102.112006
Appears in Collections:Physics publications

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