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Searches for New Physics in Events with a Photon and b-quark Jet at CDF

Lancaster, M; Waters, DCDFC; (2002) Searches for New Physics in Events with a Photon and b-quark Jet at CDF. Physical Review D , 65 , Article 052006. 10.1103/PhysRevD.65.052006. Green open access

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Abstract

We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in 85pb-1 of p̅ p collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a pair of new particles, such as those predicted by supersymmetry, leading to a production rate exceeding standard model predictions. We also search these events for anomalous production of missing transverse energy, additional jets and leptons (e, μ and τ), and additional b quarks. We find no evidence for any anomalous production of γb or γb+X events. We present limits on two supersymmetric models: a model where the photon is produced in the decay χ̃20→γχ̃10, and a model where the photon is produced in the neutralino decay into the gravitino LSP, χ̃10→γG̃. We also present our limits in a model-independent form and test methods of applying model-independent limits.

Type: Article
Title: Searches for New Physics in Events with a Photon and b-quark Jet at CDF
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevD.65.052006
Publisher version: http://dx.doi.org/10.1103/PhysRevD.65.052006
Language: English
Additional information: © 2002 The American Physical Society
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131980
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