Three articles by Bruno Pontecorvo (1955-1956)
The beginning of Particle Physics at the Dubna SynchroCyclotron
Presentazione
This volume presents three papers by Bruno Pontecorvo translated from the original Russian edition. The physics results discussed in the papers have been obtained by Pontecorvo in the years 1955-56 at the synchrocyclotron of Dubna, in USSR, a proton accelerator that, at that time, was the most powerful particle-machine in the world. Thanks to the large energy available, important results have been obtained using secondary beams of charged pions interacting with hydrogen and deuterium. A detailed analysis of the data collected is presented in terms of the theoretical models available at that time, based on “Partial Waves Analysis” of the interaction cross sections. Moreover, a reanalysis of the negative-pion- proton cross-sections presented in the introduction, proves the existence of the Δ0-baryon particle, a member of the baryonic decuplet of the SU(3) symmetry group. The Δ-baryon family (Δ++, Δ+, Δ0, Δ-) represented an important milestone for the following developments in particle physics: the Gell-Mann Zweig quark-model and the introduction of the “color”: the new quantum number of the strong interaction theory: the “Quantum Chromodynamics”.
Translated from Russian edition by Gil Pontecorvo, JINR, Dubna
Introduction by Vincenzo Cavasinni and Paolo Rossi, Universit´a di Pisa
Translated from Russian edition by Gil Pontecorvo, JINR, Dubna
Introduction by Vincenzo Cavasinni and Paolo Rossi, Universit´a di Pisa
Presentazione
This volume presents three papers by Bruno Pontecorvo translated from the original Russian edition. The physics results discussed in the papers have been obtained by Pontecorvo in the years 1955-56 at the synchrocyclotron of Dubna, in USSR, a proton accelerator that, at that time, was the most powerful particle-machine in the world. Thanks to the large energy available, important results have been obtained using secondary beams of charged pions interacting with hydrogen and deuterium. A detailed analysis of the data collected is presented in terms of the theoretical models available at that time, based on “Partial Waves Analysis” of the interaction cross sections. Moreover, a reanalysis of the negative-pion- proton cross-sections presented in the introduction, proves the existence of the Δ0-baryon particle, a member of the baryonic decuplet of the SU(3) symmetry group. The Δ-baryon family (Δ++, Δ+, Δ0, Δ-) represented an important milestone for the following developments in particle physics: the Gell-Mann Zweig quark-model and the introduction of the “color”: the new quantum number of the strong interaction theory: the “Quantum Chromodynamics”.
Translated from Russian edition by Gil Pontecorvo, JINR, Dubna
Introduction by Vincenzo Cavasinni and Paolo Rossi, Universit´a di Pisa
Translated from Russian edition by Gil Pontecorvo, JINR, Dubna
Introduction by Vincenzo Cavasinni and Paolo Rossi, Universit´a di Pisa
Paolo Rossi
Paolo Rossi, ordinario a Pisa di Fisica Teorica (2000-2016), e dal 2016 ordinario di Didattica e Storia della Fisica. È attivo nella ricerca dal 1976, con oltre 100 articoli di fisica teorica su riviste internazionali e un centinaio di pubblicazioni su temi interdisciplinari. Attualmente nell’ambito di un progetto del Centro Fermi sta pubblicando il primo Dizionario Biografico dei Fisici Italiani.
Vincenzo Cavasinni
Vincenzo Cavasinni is full professor of experimental physics at the University of Pisa. He has been working with leading roles at CERN, Geneva, since 1970’s: at the ISR, at the proton-antiproton and LHC colliders, where important particles such as the W/Z and the Higgs have been discovered.
Since 2016 he is the coordinator of the “Centro Pontecorvo” of the University of Pisa for the recollection of the most important results obtained in physics, especially in the past century.
Since 2016 he is the coordinator of the “Centro Pontecorvo” of the University of Pisa for the recollection of the most important results obtained in physics, especially in the past century.
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Three articles by Bruno Pontecorvo (1955-1956)
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