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Phys. Rev. D 80, 052003 (2009) [14 pages]

Search for anomalous production of events with a photon, jet, b-quark jet, and missing transverse energy

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T. Aaltonen et al. CDF Collaboration
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Received 2 May 2009; published 14 September 2009

We present a signature-based search for the anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy (T). The search uses data corresponding to 2.0  fb-1 of integrated luminosity from pp̅ collisions at a center-of-mass energy of s=1.96  TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6.697 47×106 events with a photon candidate with transverse energy ET>25  GeV, we find 617 events with T>25  GeV and two or more jets with ET>15  GeV, at least one identified as originating from a b quark, versus an expectation of 607±113 events. Increasing the requirement on T to 50 GeV, we find 28 events versus an expectation of 30±11 events. We find no indications of non-standard-model phenomena.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.80.052003
DOI:
10.1103/PhysRevD.80.052003
PACS:
13.85.Qk, 12.60.Jv, 14.80.Ly