The first Yamada Symposium on Neutrinos and Dark Matter
in Nuclear Physics ( YS1-NDM03 ) was held at the Nara district in June
9-14, 2003. The Yamada Science Foundation( YSF ) has started a new program
of the
Yamada Symposium on the occasion of it's 25th anniversary. YS1-NDM03 is
the first symposium of the new series of the Yamada Symposium. This a brief
summary of the YS1-NDM03 symposium.
The purpose of the Yamada Symposium is to discuss research frontiers and
perspectives on currently developing subjects together with younger researchers,
who will play major roles in research activities in future.
The symposium includes reviews on science frontiers and future perspectives,
presentations of recent research works and forums on new science frontiers
and perspectives. The symposium encourages hot discussions as well.
The present symposium NDN03 aims at discussions on research frontiers
and perspectives of neutrinos and dark matter in nuclei. Active scientists
of around 85 from 15 countries participated in NDM03. They include many
young and promising scientists. International advisory committee was
composed by 22 leading scientists from 17 countries.
The symposium was held at the Nara new public hall in June 10th, 11th,
13th, and 14th, at the Nara hotel in June 9th and at the Fureai Kohryu
Hall Oto village in the afternoon of June 12th. All participants visited
the Oto Cosmo Observatory, the underground laboratory of Osaka University.
Here experimental studies of neutrinos and dark matter are under progress.
The subjects discussed in YS1-NDM03 are 1) neutrino mass by beta and
double beta decays and neutrinos. 2) solar and supernova neutrinos and
neutrinos in astrophysics, 3) neutrino nuclear interactions and physics
of neutrino beams, 4) dark matter and cosmology and dark matter studies
by nuclear scatterings, and 5) related subjects.
The scientific sessions consist of an opening session, 14 sessions, a
special session, and a poster session. Scientific subjects discussed
are given in the section 2
It was our great pleasure that Prof. M. Koshiba gave an impressive and
instructive talk in the special session on the neutrino astrophysics,
for which the Novel prize was awarded to Prof. Koshiba in 2002..
An informal meeting on double beta decays was held in the afternoon
of June 13 to discuss International collaboration for future bb decay
experiments. This is based on our agreement as given in the international
statement, http://www.rcnp.osaka-u.ac.jp/~ejiri/DBD-Lett
Social programs include the welcome party in 17 ? 19 June 8th at the
Nara New public Hall, the reception in 19F30 ? 21 June 9th at Nara hotel,
the barbecue party 17F15 ? 19 June 12th at Hoshino-kun Oto, the Koto
and Shakuhachi concert and the banquet 19F30 ? 22 June 13th. The three
afternoons in June 10th, 11th, and 13th were free for discussions and
visiting temples and shrines in Nara Park. All international advisors
were invited by the YSF director Prof. Y. Yamada to a dinner at Kikusui
rou in the evening of June 11th. These social programs and the ample
free discussion times, together with the visit to the Oto underground
laboratory, were very effective for further lively discussions.
We are very pleased to hear from most participants during and/or after
the symposium how they all have enjoyed much nice talks and active discussions
through YS1-NDM03. Many of them were impressed by the new type of the
physics symposium, and by the idea of YS as presented by Prof. Y. Yamada
in the opening session.
Accordingly we have agreed to continue this type of the symposium on
neutrinos and dark matter in nuclear physics, next one being NDM06 in
Paris to be organized by Prof. S. Julian and the Orsay group.
The outline of the symposium is found in the YS1-NDM03 circular given
in the web site,
http://ndm03.phys.sci.osaka-u.ac.jp/
II. Scientific subjects of NDM03
Neutrinos and dark matter are current subjects of nuclear particle and
astro physics. Experimental and theoretical studies of them are now
opening new fields of physics in the 21 st centuries. Recent studies
of neutrino oscillations provide evidences for physics beyond the standard
electro-weak theory.
Neutrinos and dark matter are studied in nuclei, which are well isolated
systems of nucleons in quantum states. Nuclear responses for neutrinos
and dark matter are crucial for studies of them in nuclei. Neutrino nuclear
interactions play important roles in astro nuclear processes.
The scientific sessions consists of 15 plenary sessions and one poster
session. The plenary sessions are as follows.
| I. |
 |
Neutrino masses and nuclear b and bb decays. |
| II. |
|
Double beta decays and neutrinos |
| III. |
|
Double beta decay experiments, future I |
| IV. |
|
Double beta decay experiments, future II |
| V. |
|
Solar n' s, n oscillations, and n interactions. |
| VI. |
|
Solar n experiments and perspectives. |
| VII. |
|
Solar n productions and nuclear interactions with DM |
| VIII. |
|
Supernova n's and Astrophysics |
| IX. |
|
Physics with low energy n' s, and n nuclear interactions. |
| X. |
|
Accelerator-based n physics |
| XI. |
|
Underground laboratories. |
| XII. |
|
DM and cosmology |
| XIII. |
|
DM experiments |
| XIV. |
|
Future DM experiments |
| XV. |
|
Perspectives of n' s and DM in nuclear physics |
| XV |
|
Special Session |
In the scientific sessions 54 invited papers were presented, and 13
contributions were displayed in the poster session.
Many interesting works and original views of the perspectives on neutrinos
and dark matter in nuclear physics were presented.
The first results on the double beta decay experiments with sub eV mass
sensitivity were reported by NEMO and CUORECINO groups. New projects
on the double beta decays with even higher 30 meV sensitivity were presented
by Majorana, MOON, EXO and other groups, and Katrin group showed the
progress of t-beta experiment. These experimental works, together with
new theoretical methods on nuclear matrix elements presented by several
nuclear theory groups, are promising for studies of the neutrino masses.
New results and progresses of the neutrino oscillations by SK, SNO, KamLAND,
FNAL and others are quite impressive to establish the neutrino mass differences
and the mixing parameters.
High precision studies of dark mattes and theoretical studies of dark
matters and cosmology
were discussed by several groups. These works are important for new physics
beyond the standard theory and for understanding our universe. Theoretical
and experimental works on supernova neutrinos and the explosion processes
were presented by several groups.
Perspectives and futures of neutrinos and DM studies were extensively
discussed. The last session ( session XV ) is a forum on the perspectives
by leading physicists.
One of highlights was obviously the talk presented by Prof. M. Koshiba
in the special session.
Prof. Koshiba discussed how the neutrino astrophysics was developed by
him and his Kamioka/SK group and will be further studied by younger generation
scientists.
Unique features of the present symposium are 1) new and original works
on current subjects on neutrinos, dark matter and related subjects in
nuclear physics, 2) emphasis on interdisciplinary fields of particle
nuclear and astro physics, 3) active discussions among distinguished
leading physicists and young promising physicists, and 4) discussions
on perspectives and futures of research frontiers.
Invited papers presented in these sessions and short contributions presented
in the poster sessions are given in the YS1-NDM03 proceedings. This was
published in the web site,
http://ndm03.phys.sci.osaka-u.ac.jp/proc/index.htm
III. Supports
and acknowledgements
The present symposium was supported by the Yamada Science Foundation( YSF ).
We would like to express our hearty gratitude to Prof. Y. Yamada, the
director general and the YSF for the generous support for YS1-NDM03,
and to Dr T. Kawaba and the YSF staff for the corporation. We would like
to thank all international advisors and all local organizers for valuable
suggestions and symposium organization and all YS committee members for
kind suggestions.
Many thanks are also due to Physics, OULNS and RCNP, Osaka University
for various kinds of supports including the NDM network and other technical
supports. We appreciate supports and corporation by Mr T.Kitahara, Mayor
of Oto village, Nara prefecture and Nara convention bureau. In fact many
of the participants were impressed by the excellent speech by Mr T. Kitamura
and his understanding of and support for the basic science.
Special thanks are due to Dr. I. Ogawa ( Physics Osaka Univ.), YS1-NDM03
scientific secretary for all nice and hard works for YS1-NDM03.
Links
YS1-NDM03 circular
http://ndm03.phys.sci.osaka-u.ac.jp/
YS1-NDM03 Proceedings
http://ndm03.phys.sci.osaka-u.ac.jp/proc/index.htm
International Statement of Double Beta Decays
http://www.rcnp.osaka-u.ac.jp/~ejiri/DBD-Lett
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