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Scientific article
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English

Searches for new physics in events with a photon and b-quark jet at CDF

ContributorsCDF Collaboration
Publication date2002
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 p¯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 χ̃02→γχ̃01, and a model where the photon is produced in the neutralino decay into the gravitino LSP, χ̃01→γG̃. We also present our limits in a model-independent form and test methods of applying model-independent limits.

Citation (ISO format)
CDF Collaboration. Searches for new physics in events with a photon and <em>b</em>-quark jet at CDF. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2002, vol. 65, n° 05. doi: 10.1103/PhysRevD.65.052006
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Article (Published version)
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ISSN of the journal1550-2368
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