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

Cerri, A, Chavez Barajas, C, De Santo, A, Grout, Z J, Potter, C T, Salvatore, F, Santoyo Castillo, I, Shehu, Y, Sutton, Mark, Vivarelli, I and Others (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 (PRL), 114 (8). ISSN 1079-7114

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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: Article
Additional Information: Part of the ATLAS collaboration
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Samuel Appleton
Date Deposited: 17 Jul 2015 14:00
Last Modified: 08 Mar 2017 04:49
URI: http://sro.sussex.ac.uk/id/eprint/55411

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Project NameSussex Project NumberFunderFunder Ref
Consolidated GrantG0927STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/K001329/1