ATMOSPHERIC NU(MU) NU(E) RATIO IN THE MULTI-GEV ENERGY-RANGE

Authors
FUKUDA Y HAYAKAWA T INOUE K ISHIDA T JOUKOU S KAJITA T KASUGA S KOSHIO Y KUMITA T MATSUMOTO K NAKAHATA M NAKAMURA K SAKAI A SHIOZAWA M SUZUKI J SUZUKI Y TOTSUKA Y HIRATA KS KIHARA K MORI M OYAMA Y SUZUKI A YAMADA M KOSHIBA M NISHIJIMA K KAJIMURA T SUDA T SUZUKI AT ISHIZUKA T KOGA M MIYANO K MIYATA H OKAZAWA H TAKEI H HARA T KISHI N NAGASHIMA Y TAKITA M YOSHIMOTO A HAYATO Y KANEYUKI K TAKEUCHI Y TANIMORI T TASAKA S NISHIKAWA K BEIER EW FRANK ED FRATI W KIM SB MANN AK NEWCOMER FM VANBERG R ZHANG W
Citation
Y. Fukuda et al., ATMOSPHERIC NU(MU) NU(E) RATIO IN THE MULTI-GEV ENERGY-RANGE, Physics letters. Section B, 335(2), 1994, pp. 237-245
Citations number
28
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
335
Issue
2
Year of publication
1994
Pages
237 - 245
Database
ISI
SICI code
0370-2693(1994)335:2<237:ANNRIT>2.0.ZU;2-7
Abstract
Data from the Kamiokande detector were used to study the atmospheric ( nu(mu) + nu(mu)BAR)/(nu(e) + nu(e)BAR) ratio in the multi-GeV energy r ange. The observed ratio of mu-like to e-like events relative to the c alculated ratio, (mu/e)data/(mu/e)MC = 0.57(+0.08/-0.07) +/- 0.07, sug gests that the atmospheric (nu(mu) + nu(mu)BAR)/(nu(e) + nu(e)BAR) rat io is smaller than expected for these neutrino energies. Also studied was the zenith-angle dependence of the above ratio. Results of an anal ysis of neutrino oscillations are presented.