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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

Aad G.
•
Abbott B.
•
Abbott D. C.
altro
Zwalinski L.
2020
  • journal article

Periodico
PHYSICAL REVIEW D
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 → (bb ̄)(bb ̄), using protonproton 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 → bb ̄ 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 → (bb ̄)(bb ̄), where the Higgs boson is produced in association with a Z boson.
DOI
10.1103/PhysRevD.102.112006
WOS
WOS:000596369400003
Archivio
http://hdl.handle.net/11390/1211776
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85097529287
https://ricerca.unityfvg.it/handle/11390/1211776
Diritti
open access
google-scholar
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