Open AccessInvestigating the supersymmetric explanation of anomalous CDF lepton(s) photon(s) missing-ETevents
Author(s) -
B. C. Allanach,
Smaragda Lola,
K. Sridhar
Publication year - 2002
Publication title -
journal of high energy physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 261
eISSN - 1126-6708
pISSN - 1029-8479
DOI - 10.1088/1126-6708/2002/04/002
Subject(s) - physics , particle physics , neutralino , gravitino , lightest supersymmetric particle , missing energy , tevatron , lambda , superpartner , standard model (mathematical formulation) , r parity , parameter space , lepton , supersymmetry , nuclear physics , context (archaeology) , large hadron collider , statistics , quantum mechanics , supergravity , history , mathematics , archaeology , gauge (firearms) , electron , paleontology , biology
The recent excess over the Standard Model prediction in the \mu \gammamissing-E_T channel reported by CDF can be well-explained by resonant smuonproduction with a single dominant R-parity violating coupling \lambda'_{211},in the context of models where the gravitino is the lightest supersymmetricparticle. The slepton decays to the lightest neutralino and a muon followed byneutralino decaying to a gravitino and photon. The kinematical distributionsare fitted well by our hypothesis and we use them to constrain the availableparameter space. The model also provides an explanation for the ee\gamma\gammamissing-E_T event observed in Run I of the Tevatron by the CDF experiment. Ourmodel predicts an excess of between 5 and 35 events in a \gamma missing-E_Tchannel at Run I. We provide predictions for signatures expected by the modelat Run II.Comment: 23 pages, Latex file + 10 figures and 4 Tables (included) Includes JHEP3.cls and axodraw.st
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