Search for the Higgs boson produced in association with a W boson and decaying to four b-quarks via two spin-zero particles in pp collisions at 13 TeV with the ATLAS detector
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Volume
76
Publisher
DOI
10.1140/epjc/s10052-016-4418-9
Journal
EUROPEAN PHYSICAL JOURNAL C
Issue
ISSN
1434-6044
Metadata
Show full item recordAbstract
This paper presents a dedicated search for exotic decays of the Higgs boson to a pair of new spin-zero particles, 𝐻→𝑎𝑎
H
→
a
a
, where the particle a decays to b-quarks and has a mass in the range of 20–60 GeV. The search is performed in events where the Higgs boson is produced in association with a 𝑊
W
boson, giving rise to a signature of a lepton (electron or muon), missing transverse momentum, and multiple jets from b-quark decays. The analysis is based on the full dataset of pp collisions at 𝑠√=13TeV
s
=
13
T
e
V
recorded in 2015 by the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb −1
fb
−
1
. No significant excess of events above the Standard Model prediction is observed, and a 95%
95
%
confidence-level upper limit is derived for the product of the production cross section for 𝑝𝑝→𝑊𝐻
p
p
→
W
H
times the branching ratio for the decay 𝐻→𝑎𝑎→4𝑏
H
→
a
a
→
4
b
. The upper limit ranges from 6.2 pb for an a-boson mass 𝑚𝑎=20GeV
m
a
=
20
G
e
V
to 1.5 pb for 𝑚𝑎=60GeV
m
a
=
60
G
e
V
.
Authors
Aaboudd, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Aben, R; AbouZeid, OS; Abraham, NL; Abramowicz, HCollections
- Physics and Astronomy [1328]
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