Frascati remembers Touschek and the J/Ψ

Flavour physics - old as well as new - was the theme of the ninth Laboratori Nazionali di Frascati (LNF) Spring School "Bruno Touschek", which was held on 17-21 May and attended by about 40 young researchers from Italy and elsewhere in Europe.

Since its inception in 1996 the school has been instrumental in training young researchers for activity at DAFNE, but has not been limited to DAFNE physics. This year the lectures spanned from rare-K decays to the latest results from BaBar, from chiral perturbation theory to lattice calculations. The lecturers included Aneesh Manohar from the University of California at San Diego, Andrzej Buras from Munich Technical University, Ikaros Bigi from Notre Dame University, Antonio Masiero from Padova University, Augusto Ceccucci from CERN and Chris Sachrajda from Southampton University. Experimental results from B-factories were presented by Riccardo Faccini from the University of Rome, while Francesco Bedeschi presented B and D physics from the Tevatron. The future of flavour physics was presented in seminars by Franco Forti from Pisa and Paola Gianotti from INFN Frascati, and in the young-researcher session recent results from KLOE on the measurement of the hadronic cross-section, rare kaon decays and the KS branching ratio to three π0 were presented.

In addition to lectures and seminars the school traditionally has a historical session, with distinguished speakers marking special occasions. This year there were two historical highlights: the recently completed film Bruno Touschek e l'Arte della Fisica by Luisa Bonolis and Enrico Agapito, and a session on "Frascati and the November Revolution", with a round-table discussion on how the ADONE machine increased its design energy to reach the J/Ψ production threshold. The film on Bruno Touschek has been produced by INFN and was shown for the first time on 19 May to the students and lecturers at the school. It describes the life and accomplishments of Touschek through a series of interviews with the physicists who knew him well, including Carlo Bernardini, Nicola Cabibbo, Carlo Rubbia and Giorgio Salvini. It also tells the story of the first e+e- machine, AdA, which was proposed by Touschek in 1960, through the protagonists of that adventure. The film, which is one-and-a-half hours long, is in Italian (an English version is currently under preparation) and includes a large number of previously undisclosed documents and photographs of Touschek. The film is the first extended document on Touschek's life since the biography written by Edoardo Amaldi, soon after Touschek's death in 1978, and is aimed at anyone interested in science, including high-school students and university undergraduates.

A second historical session was held on the last day of the school to mark the observation of the J/Ψ at ADONE 30 years ago. A short television movie from 1974 was shown and Giorgio Bellettini, who was director of Frascati at the time, told how he heard about the discovery first at Brookhaven and then at SLAC. At a round-table discussion following Bellettini's talk, Enzo Iarocci, Mario Greco, Sergio Tazzari and Giorgio Salvini all recalled how the Frascati Laboratory reacted to the news from the West Coast and was able, in three days, to increase the beam energy of ADONE to see the J/Ψ peak.

Further reading

E Amaldi 1981 The Bruno Touschek Legacy CERN 81-19.
For more about the school, see www.lnf.infn.it/conference/lnfss.