Search for anomalous production of diphoton events with missing transverse energy at CDF and limits on gauge-mediated supersymmetry-breaking models

Acosta, D.

doi:10.1103/PhysRevD.71.031104

Search for anomalous production of diphoton events with missing transverse energy at CDF and limits on gauge-mediated supersymmetry-breaking models

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Phys.Rev.D

DOI:https://doi.org/10.1103/PhysRevD.71.031104· OSTI ID:1847740

Acosta, D.

We present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 $$\invpb$$ of $$\ppbar$$ collisions at $$\sqrt{s}=1.96$$ TeV we observe no candidate events, with an expected standard model background of $$0.27\pm0.07({\rm stat})\pm0.10({\rm syst})$$ events. The results exclude a lightest chargino of mass less than 167 GeV/$c^2$, and lightest neutralino of mass less than 93 GeV/$c^2$ at 95% C.L. in a gauge--mediated supersymmetry-- breaking model with a light gravitino.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: CDF

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1847740

Report Number(s):: FERMILAB-PUB-04-299-E; arXiv:hep-ex/0410053; oai:inspirehep.net:662226

Journal Information:: Phys.Rev.D, Journal Name: Phys.Rev.D Vol. 71

Country of Publication:: United States

Language:: English

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