The Electronic Publishing Project of the UCLA Library

UC Seal

Author: N.P. Longley

Title: Neutrino-Induced Upward-going Muons at MACRO

Abstract: Upward-going muon events in MACRO allow measurement of the __ ux in the range E _ 10to 100 GeV. The ratio of total observed to expected events is 0:74 _ 0:036stat _ 0:046sys _ 0:13theor,which when combined with the observed zenith angle distribution (____ _ cos _ _ _____ agrees withthe no-oscillation model to no better than 0.1%. The data are in signi_cantly greater agreementwith the __ $ __ vacuum oscillation model, with best-_t parameters of sin22_ _ 1:0 and _m2 _2 _ 10_3eV2=c4. The combined probability (total rate and zenith angle distribution) assigned tothe data under this best-_t assumption is 17%. These results are consistent with measurements atSuperkamiokande and Soudan.

Comments: For the MACRO Collaboration The Colorado College, Colorado Springs, CO 80903 USA

Download the full paper in the following formats:

Proceedings of this conference are published on the World Wide Web by the Library of the University of California at Los Angeles. Although the proceedings are published solely on the Web, identical editorial standards have been applied as for book versions of proceedings.
DPF99