Search for Higgs Boson pair production in the γγbb¯ final state using pp collision data at √s=8 TeV from the ATLAS detector

, The ATLAS collaboration (2015) Search for Higgs Boson pair production in the γγbb¯ final state using pp collision data at √s=8  TeV from the ATLAS detector. Physical review letters, 114. ISSN 1079-7114

[img]
Preview
PDF (PhysRevLett.114.081802)
PhysRevLett.114.081802.pdf - Published Version
Available under License Creative Commons Attribution.

Download (428kB)

Abstract

Searches are performed for resonant and nonresonant Higgs boson pair production in the γγbb¯ final state using 20  fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X→hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2015 CERN, for the ATLAS Collaboration
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
74037
Deposited By:
Deposited On:
18 Jun 2015 05:59
Refereed?:
Yes
Published?:
Published
Last Modified:
04 Dec 2020 02:06