First Bulletin



8th International Workshop on Tau-Lepton Physics




          The 8th International Workshop on Tau-Lepton Physics, Tau04, will be held in the New Public Hall in  Nara, Japan, from Tuesday, September 14 to Friday, September 17, 2004. This is the eighth Workshop of this series devoted to the physics of the tau lepton and its associated neutrino. The meetings have been organized every two years since the first workshop at the University of Paris(Orsay,France) in 1990. The latest workshop was held in 2002, at the University of California, Santa Cruz, California, USA.


           The goal of the Workshop is, by getting together theorists and experimentalists, to discuss recent progress in tau lepton physics.  New Tau results from high energy machines, low energy machines and B-factories will be presented as well as recent results from g-2 and neutrino oscillation experiments. Also included in the program are related subjects like the hadron cross section measurement at e+e- colliders as well as  a search for mu->e gamma decays.  In addition, there will be several review talks on the future prospects.



1. Topics include


At the Workshop, we will discuss the following subjects:


- Lepton Flavor Violation in tau decays

- Measurement of the tau branching fractions

- Measurement of the tau spectral functions

- Search for CP-violation at lepton sector

- Cabibbo suppressed decays

- Strange quark mass

- Tau lepton rare decays

- g-2 and the hadron cross section in e+e- colliders

- Neutrino oscillation experiments

- mu->e gamma and Lepton Flavor Violation

- Tau lepton at hadron machines



2. Date of the workshop


   Tuesday, September 14 – Friday, September 17, 2004

   Registration and Reception:  Monday, September 13, 2004


3. Workshop Site


         The Workshop will be held in the New Public Hall (Shin-Kokaido)  in Nara Park, Nara, Japan. Nara city, the old capital of Japan, is situated 500 km to west from Tokyo and 40 km south-east from Kyoto. The closest international airport is the Kansai international airport at Osaka. The distance from the airport to Nara is about 80km. 


4. Registration/Accommodation


The relevant information will appear at our web site




5. Visa


        A valid passport is required for entry in Japan. Participants from some countries will also need a visa. Participants, who need a visa, should contact the Organizing Committee well beforehand.


6.   Talks and Abstracts


The workshop will consist of plenary talks only. If you would like to present a talk, please submit an abstract before July 15, 2004. 



7.   Local Organizing Committee


Y. Enari (Nagoya) 

K. Hayasaka (Nagoya)

H. Hayashii (Nara) ,Chair

K. Inami (Nagoya)

S.U. Kataoka (Nara)

K. Miyabayashi (Nara) 

S. Noguchi (Nara) 

T. Ohshima (Nagoya)

N. Sato (Nagoya)

K. Senyo (Nagoya)

K. Tamae (Tohoku)

S. Uehara (KEK)

A. Yamaguchi (Tohoku)

Y. Yusa (Tohoku)



8.   International Advisory Committee


A. Astbury (University of Victoria)

H.S. Chen (IHEP)

M. Davier( Orsay)

Y. Declais (IPNL)

S. Eidelman (Budker Institute)

G. Feldman (Harvard)

K.K. Gan (Ohio State)

J. Smith (University of Colorado)

J. Kuehn (Karlsruhe)

Y. Okada (KEK)

M. Perl (SLAC)

A. Pich (Valencia)

G. Rolandi (CERN)

A.I. Sanda (Nagoya)

A. Stahl (DESY)

A. Seiden (Santa Cruz)

R. Stroynowsky (Southern Methodist University)

A.J. Weinstein (Caltech)


9.   Second Circular


The second circular will be sent in May, 2004. It will include further information on registration, scientific program and accommodation.


10.            Contact


If you have any questions or comments, please send E-mail to the following address:





gTau04 Workshop g,

Department of Physics, Nara Women`s University, Kita-Uoya, Nishi-Machi

Nara   630-8506, Japan

Fax   +81-742-20-3390

URL:  http://www.hepl.phys.nagoya-u.ac.jp/public/Tau04/


The workshop is supported by Grant-in-Aid for Scientific Research on Priority Area 14046102 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.