STUDY OF THE ATMOSPHERIC NEUTRINO FLUX IN THE MULTI-GEV ENERGY-RANGE

Authors
FUKUDA Y HAYAKAWA T ICHIHARA E INOUE K ISHIHARA K ISHINO H ITOW Y KAJITA T KAMEDA J KASUGA S KOBAYASHI K KOBAYASHI Y KOSHIO Y MARTENS K MIURA M NAKAHATA M NAKAYAMA S OKADA A OKETA M OKUMURA K OTA M SAKURAI N SHIOZAWA M SUZUKI Y TAKEUCHI Y TOTSUKA Y YAMADA S EARL M HABIG A KEARNS E KIM SB MESSIER MD SCHOLBERG K STONE JL SULAK LR WALTER CW GOLDHABER M BARSZCZAK T GAJEWSKI W HALVERSON PG HSU J KROPP WR PRICE LR REINES F SOBEL HW VAGINS MR GANEZER KS KEIG WE ELLSWORTH RW TASAKA S FLANAGAN JW KIBAYASHI A LEARNED JG MATSUNO S STENGER V TAKEMORI D ISHII T KANZAKI J KOBAYASHI T NAKAMURA K NISHIKAWA K OYAMA Y SAKAI A SAKUDA M SASAKI O ECHIGO S KOHAMA M SUZUKI AT HAINES TJ BLAUFUSS E SANFORD R SVOBODA R CHEN ML CONNER Z GOODMAN JA SULLIVAN GW MORI M HILL J JUNG CK MAUGER C MCGREW C SHARKEY E VIREN B YANAGISAWA C DOKI W ISHIZUKA T KITAGUCHI Y KOGA H MIYANO K OKAZAWA H SAJI C TAKAHATA M KUSANO A NAGASHIMA Y TAKITA M YAMAGUCHI T YOSHIDA M ETOH M FUJITA K HASEGAWA A HASEGAWA T HATAKEYAMA S IWAMOTO T KINEBUCHI T KOGA M MARUYAMA T OGAWA H SUZUKI A TSUSHIMA F KOSHIBA M NEMOTO M NISHIJIMA K FUTAGAMI T HAYATO Y KANAYA Y KANEYUKI K WATANABE Y KIELCZEWSKA D DOYLE R GEORGE J STACHYRA A WAI L WILKES J YOUNG K
Citation
Y. Fukuda et al., STUDY OF THE ATMOSPHERIC NEUTRINO FLUX IN THE MULTI-GEV ENERGY-RANGE, Physics letters. Section B, 436(1-2), 1998, pp. 33-41
Citations number
13
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
436
Issue
1-2
Year of publication
1998
Pages
33 - 41
Database
ISI
SICI code
0370-2693(1998)436:1-2<33:SOTANF>2.0.ZU;2-W
Abstract
The flavor ratio of the atmospheric neutrino flux and its zenith angle dependence have been studied in the multi-GeV energy range using an e xposure of 25.5 kiloton-years of the Super-Kamiokande detector, By com paring the data to a detailed Monte Carlo simulation, the ratio (mu/e) (DATA)/(mu/e)(MC) was measured to be 0.66 +/- 0.06(stat.) +/- 0.08(sys .). In addition, a strong distortion in the shape of the mu-like event zenith angle distribution was observed. The ratio of the number of up ward to downward mu-like events was found to be 0.52(-0.06)(+0.07)(sta t) +/- 0.01(sys.), with an expected value of 0.98 +/- 0.03(stat.) +/- 0.02(sys.), while the same ratio for the e-like events was consistent with unity. (C) 1998 Elsevier Science B.V. All rights reserved.