Search for strong production of supersymmetric particles in final states with missing transverse momentum and at least three b -jets at √s=8 TeV proton-proton collisions with the ATLAS detector

Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Abolins, M.; AbouZeid, O. S.; Abramowicz, H.; Abreu, H.; Abreu, R.; Abulaiti, Y.; Acharya, B. S.; Adamczyk, L.; Adams, D. L.; Adelman, J.; Adomeit, Stefanie; Adye, T.; Agatonovic-Jovin, T.; Aguilar-Saavedra, J. A.; Agustoni, M.; Ahlen, S. P.; Ahmadov, F.; Aielli, G.; Akerstedt, H.; Zurzolo, G.; Zutshi, V. and Zwalinski, L. (2014): Search for strong production of supersymmetric particles in final states with missing transverse momentum and at least three b -jets at √s=8 TeV proton-proton collisions with the ATLAS detector. In: Journal of High Energy Physics, Vol. 10, 24

Abstract

This paper reports the results of a search for strong production of supersymmetric particles in 20.1 fb⁻¹ of proton-proton collisions at a centre-of-mass energy of 8 TeV using the ATLAS detector at the LHC. The search is performed separately in events with either zero or at least one high-p (T) lepton (electron or muon), large missing transverse momentum, high jet multiplicity and at least three jets identified as originated from the fragmentation of a b-quark. No excess is observed with respect to the Standard Model predictions. The results are interpreted in the context of several supersymmetric models involving gluinos and scalar top and bottom quarks, as well as a mSUGRA/CMSSM model. Gluino masses up to 1340 GeV are excluded, depending on the model, significantly extending the previous ATLAS limits.

• Item Type: Journal article
• Form of publication: Publisher's Version
• Keywords: Hadron-Hadron Scattering
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 1029-8479
• Alliance/National Licence: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
• Annotation: SCOAP3-Publikation. -Weitere Autoren siehe PDF-Volltext
• Language: English