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Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at root s=8 TeV
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2897
2015 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 743, 15-34 p.Article in journal (Refereed) Published
Abstract [en]

The ATLAS detector at the Large Hadron Collider at CERN is used to search for the decay of a scalar boson to a pair of long-lived particles, neutral under the Standard Model gauge group, in 20.3 fb(-1) of data collected in proton-proton collisions at root s = 8 TeV. This search is sensitive to long-lived particles that decay to Standard Model particles producing jets at the outer edge of the ATLAS electromagnetic calorimeter or inside the hadronic calorimeter. No significant excess of events is observed. Limits are reported on the product of the scalar boson production cross section times branching ratio into long-lived neutral particles as a function of the proper lifetime of the particles. Limits are reported for boson masses from 100 GeV to 900 GeV, and a long-lived neutral particle mass from 10 GeV to 150 GeV.

Place, publisher, year, edition, pages
2015. Vol. 743, 15-34 p.
Keyword [en]
High-energy collider experiment, Long-lived neutral particle, New physics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-172203DOI: 10.1016/j.physletb.2015.02.015ISI: 000352147500003Scopus ID: 2-s2.0-84923260857OAI: oai:DiVA.org:kth-172203DiVA: diva2:846096
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20150814

Available from: 2015-08-14 Created: 2015-08-14 Last updated: 2017-12-04Bibliographically approved

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Strandberg, Jonas

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Jovicevic, JelenaKuwertz, Emma S.Lund-Jensen, BengtMorley, Anthony K.Strandberg, Jonas
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