The First Bulletin of
The 5th Workshop on "Neutrino Oscillations and their Origin" 

|| The 5th Workshop on "Neutrino Oscillations and their Origin" ||
|| ---- NOON2004 ---- ||

The 5th International Workshop on Neutrino Oscillations and their Origin
(NOON2004) will be held at Tokyo, Japan, from February 11th to February
15th of 2004. This is the fifth workshop of this series.

The neutrino oscillations discovered in atmospheric and solar neutrinos,
are now confirmed by the terrestrial oscillation experiments by using
man-made neutrinos by a high energy accelerator and nuclear reactors.
It is now important to make precise studies on neutrino mixing matrix
including a search for positive effects of as yet undiscovered theta_13,
and on sub-dominant effects due to neutrino properties which may be
hidden in the current experimental accuracy. The terrestrial experiments,
as well as the precise studies on atmospheric solar neutrinos may lead us
to the physics beyond the standard scenario of neutrino oscillations.

This workshop is therefore organized to discuss the recent progress
in neutrino oscillation physics and future directions by theorists and
experimentalists together. Astrophysical implications on neutrino masses
and oscillations are also important subjects. We also include the
related subjects like search for neutrino masses by double beta decays
or by direct methods which will provide quantitatively different
information than the oscillation phenomena. We extend the subject
to include the studies on dark matter.

As a 5th workshop, we will discuss following subjects:
1) Current status solar neutrino experiments and road map towards the future
2) Atmospheric neutrino results and future
3) Current status of accelerator neutrino experiments and future
4) Status of the theoretical study of neutrino mixing and mass
5) Future prospects of neutrino oscillations study
6) Neutrino masses in cosmology
7) mu->e-gamma and lepton flavor violation
8) Proton decays, GUT, leptogenesis
9) Astrophysical neutrinos, neutrinos from supernovae
10) Study on double beta decay
11) Dark matter search
and other related subjects.

Date of the workshop
February 11th(Wed.) to 15th(Sun.), 2004

Workshop Site
Workshop site is nearTokyo, Japan.

The homepage will appear at

A valid passport is required for entry into Japan. Participants from some
countries will also need a visa. For the participants who need VISA, please
contact us as soon as possible.

Contributed Papers
If you are going to submit a contribution paper, an abstract must be submitted
by Dec. 15, 2002. You can submit your abstract via home page.

Local Organizing Committee
Y. Itow (ICRR, Univ. of Tokyo)
K. Ishihara (ICRR, Univ. of Tokyo)
Y. Koshio (ICRR, Univ. of Tokyo)
M. Miura (ICRR, Univ. of Tokyo)
S. Moriyama (ICRR, Univ. of Tokyo)
T. Namba (ICRR, Univ. of Tokyo)
M. Nakahata (ICRR, Univ. of Tokyo)
Y. Suzuki (ICRR, Univ. of Tokyo)(chairman)
Y. Takeuchi (ICRR, Univ. of Tokyo)

Scientific Program Comittee
M. Bando (Aichi)
Y. Itow (ICRR, Tokyo)
T. Kajino (NAO)
T. Kajita (ICRR, Tokyo)
H. Minakata (Tokyo Metropolitan Univ.)
T. Mori (ICEPP, Tokyo)
S. Moriyama (ICRR, Tokyo)
M. Nakahata (ICRR, Tokyo)
M. Sakuda (KEK)
H. Shibahashi (Tokyo)
F. Suekane (RCNS, Tohoku)
Y. Suzuki (ICRR, Tokyo)
M. Tanimoto (Niigata)

International Adovisory Comittee
J.N. Bahcall (Princeton)
A. Bettini (GranSasso)
H. Ejiri (Osaka)
E. Fiorini (Milano)
W. Haxton (Washington)
P. Lipari (Roma)
A. Hallin (Queens)
G. Raffelt (Max Plank Munich)
S. Schoenert (Max Plank Heidelberg)
A.Y. Smirnov (Trieste)
P. Vogel (Caltech)
S. Wojicki (Stanford)
T. Yanagida (Tokyo)
M. Yoshimura (ICRR, Tokyo)

If you have any questions or comments, please send e-mail to the following


The Workshop on "Neutrino Oscillations and their Origin"
Kamioka Observatory, ICRR, Univ. of Tokyo
Higashi-mozumi, Kamioka-cho, Yoshiki-gun, Gifu, Japan, 506-1205
Fax: +81-578-5-2121

This workshop is partially supported by Grant-in-Aid for Scientific Research
on Priority Areas (A) "Neutrino Oscillations and their Origin" and
by the 21st Century COE Program "Symmetries in Extreme Quantum Systems."

Posted on Nov. 11, 2003