Observation of an anomalous number of dimuon events in a high energy neutrino beam - art. no. 041801

Citation
T. Adams et al., Observation of an anomalous number of dimuon events in a high energy neutrino beam - art. no. 041801, PHYS REV L, 8704(4), 2001, pp. 1801
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
8704
Issue
4
Year of publication
2001
Database
ISI
SICI code
0031-9007(20010723)8704:4<1801:OOAANO>2.0.ZU;2-0
Abstract
A search for long-lived neutral particles (N-0's) with masses above 2.2 GeV /c(2) that decay into at least one muon has been performed using an instrum ented decay channel at the NuTeV experiment at Fermilab. Data were examined for particles decaying into the final states mu mu, mue, and mu pi. Three mu mu events were observed over an expected standard model background of 0. 069 +/- 0.010 events; no events were observed in the other modes.