Evidence for muon neutrino oscillation in an accelerator-based experiment.

نویسندگان

  • E Aliu
  • S Andringa
  • S Aoki
  • J Argyriades
  • K Asakura
  • R Ashie
  • H Berns
  • H Bhang
  • A Blondel
  • S Borghi
  • J Bouchez
  • J Burguet-Castell
  • D Casper
  • C Cavata
  • A Cervera
  • K O Cho
  • J H Choi
  • U Dore
  • X Espinal
  • M Fechner
  • E Fernandez
  • Y Fukuda
  • J Gomez-Cadenas
  • R Gran
  • T Hara
  • M Hasegawa
  • T Hasegawa
  • K Hayashi
  • Y Hayato
  • R L Helmer
  • J Hill
  • K Hiraide
  • J Hosaka
  • A K Ichikawa
  • M Iinuma
  • A Ikeda
  • T Inagaki
  • T Ishida
  • K Ishihara
  • T Ishii
  • M Ishitsuka
  • Y Itow
  • T Iwashita
  • H I Jang
  • E J Jeon
  • I S Jeong
  • K Joo
  • G Jover
  • C K Jung
  • T Kajita
  • J Kameda
  • K Kaneyuki
  • I Kato
  • E Kearns
  • D Kerr
  • C O Kim
  • M Khabibullin
  • A Khotjantsev
  • D Kielczewska
  • J Y Kim
  • S Kim
  • P Kitching
  • K Kobayashi
  • T Kobayashi
  • A Konaka
  • Y Koshio
  • W Kropp
  • J Kubota
  • Yu Kudenko
  • Y Kuno
  • T Kutter
  • J Learned
  • S Likhoded
  • I T Lim
  • P F Loverre
  • L Ludovici
  • H Maesaka
  • J Mallet
  • C Mariani
  • T Maruyama
  • S Matsuno
  • V Matveev
  • C Mauger
  • K McConnel
  • C McGrew
  • S Mikheyev
  • A Minamino
  • S Mine
  • O Mineev
  • C Mitsuda
  • M Miura
  • Y Moriguchi
  • T Morita
  • S Moriyama
  • T Nakadaira
  • M Nakahata
  • K Nakamura
  • I Nakano
  • T Nakaya
  • S Nakayama
  • T Namba
  • R Nambu
  • S Nawang
  • K Nishikawa
  • K Nitta
  • F Nova
  • P Novella
  • Y Obayashi
  • A Okada
  • K Okumura
  • S M Oser
  • Y Oyama
  • M Y Pac
  • F Pierre
  • A Rodriguez
  • C Saji
  • M Sakuda
  • F Sanchez
  • A Sarrat
  • T Sasaki
  • K Scholberg
  • R Schroeter
  • M Sekiguchi
  • E Sharkey
  • M Shiozawa
  • K Shiraishi
  • G Sitjes
  • M Smy
  • H Sobel
  • J Stone
  • L Sulak
  • A Suzuki
  • Y Suzuki
  • T Takahashi
  • Y Takenaga
  • Y Takeuchi
  • K Taki
  • Y Takubo
  • N Tamura
  • M Tanaka
  • R Terri
  • S T'Jampens
  • A Tornero-Lopez
  • Y Totsuka
  • S Ueda
  • M Vagins
  • C W Walter
  • W Wang
  • R J Wilkes
  • S Yamada
  • S Yamamoto
  • C Yanagisawa
  • N Yershov
  • H Yokoyama
  • M Yokoyama
  • J Yoo
  • M Yoshida
  • J Zalipska
چکیده

We present results for nu(mu) oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced nu(mu) beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy-dependent disappearance of nu(mu), which we presume have oscillated to nu(tau). The probability that we would observe these results if there is no neutrino oscillation is 0.0050% (4.0 sigma).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Measurement of Muon Induced Neutron Background at Shallow Sites

Cosmic muon induced neutrons are a major source of background for low count rate experiments like neutrino oscillation or dark matter searches. Especially at shallow sites these neutrons are the limiting factor for the ultimate sensitivity of the measurement. Measurements of the neutron rate and counter measures including active veto and passive shielding of the detector are discussed for two n...

متن کامل

Overview of Accelerator Long Baseline Neutrino Oscillation Experiments

There is renewed interest in performing a long baseline neutrino oscillation experiment using accelerator neutrinos because of a discrepancy between the measured and the predicted values of the ratio of electron to muon neutrinos produced in the upper atmosphere by cosmic rays. The approximate range in oscillation parameter space indicated by the Kamiokande atmospheric neutrino results and conf...

متن کامل

Future Neutrino Oscillation Facilities

An outline of the present and future long-baseline neutrino facilities with emphasis on the possibilities at CERN is presented. Accelerator-made neutrinos for long-baseline oscillation experiments open the exploration to a broad and rather interesting field of physics experiments, with the measurement of the neutrino mixing angle (θ13), the determination of the sign of neutrino mass hierarchy (...

متن کامل

Neutrino oscillation physics with a FNAL proton driver

The Fermilab proton driver (FPD) is proposed to consist of a linear accelerator and several main injector modifications. Its purpose is to provide higher fluxes to potential experiments, such as neutrino oscillation experiments [1,2], or muon, kaon, pion, neutron, or antiproton experiments [1]. It is aiming for 8GeV and (up to) 120GeV protons at about 2MW, which is a factor of five to ten past ...

متن کامل

Neutrino oscillation physics with a neutrino factory

Data from atmospheric and solar neutrinos indicate that there are at least three neu-trino types involved in oscillation phenomena. Even if the corresponding neutrino mass scales are very different, the inevitable reference to mixing between more than two neutrino types has profound consequences on the planning of the accelerator experiments suggested by these results. We discuss the measuremen...

متن کامل

Neutrino Cross Section Measurements for Long-baseline Accelerator-based Neutrino Oscillation Experiments

Neutrino oscillations are clear evidence for physics beyond the standard model. The goal of next-generation neutrino oscillation experiments is to find a non-zero θ13, the last mixing matrix element for which we only know an upper limit. For this, next-generation long-baseline neutrino oscillation experiments require an order of magnitude better sensitivities. In particular, accelerator-based e...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review letters

دوره 94 8  شماره 

صفحات  -

تاریخ انتشار 2005