A. Bettini
Istituto Nazionale di Fisica Nucleare
7 Papers
75 Citations
A. Bettini is an academic researcher from Istituto Nazionale di Fisica Nucleare. The author has contributed to research in topics: Meson & Annihilation. The author has an hindex of 5, co-authored 7 publications.
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Papers
Annihilation into pions of the\(\bar p\)n system from antiprotons at rest in deuterium
A. Bettini,M. Cresti,S. Limentani,L. Peruzzo,R. Santangelo,S. Sartori,L. Bertanza,A. Bigi,R. Carrara,R. Casali,P. Lariccia +10 more
TL;DR: In this article, the pionic resonances ρ, ω and f0 were measured and analysed in detail and the rates into the various multipion final states were determined.
55
The four-prong annihilation of 1.2 GeV/c antiprotons in hydrogen (I): Four-pion final state
R.A. Donald,D.N. Edwards,R.S. Moore,E.J.C. Read,S. Reucroft,A.G. Frodesen,T. Jacobsen,S. Sire,O. Skjeggestad,P. Saetre,H. Tøfte,A. Bettini,S. Limentani,L. Peruzzo,R. Santangelo,S. Sartori +15 more
TL;DR: In this article, the center-of-mass angular distributions of the pions are presented, and a change in the momentum dependence of the forward-backward asymmetry of pions is observed at a pion momentum corresponding to the production of A2±π+.
23
Spin and parity of the 1320 MeV ρπ resonance
TL;DR: In this paper, an analysis of the decay into ρ 0π± of the 1320 MeV resonance, the A2, is presented, which shows that the spin of the resonance is 2 and its intrinsic parity is positive.
8
Study of the reaction from 1.0 to 1.6 GeV/cfrom 1.0 to 1.6 GeV/c
A. Bettini,M. Cresti,M. Mazzucato,S. Sartori,M. Alston-Garnjost,R. Huesman,R. Ross,F. T. Solmitz,A. Bigi,R. Carrara,R. Casali,P. Lariccia,R. Pazzi,Giorgio Borreani,B. Quassiati,M. Vigone,A. E. Werbrouck +16 more
TL;DR: The cross-section for this reaction rises only slowly with energy after the threshold for isobar production is reached as discussed by the authors, indicating that the bump observed in the crosssection forI=1 at a laboratory momentum of 132 GeV/c is due to the production of one pion.
5
Some tests of symmetry models in nucleon-antinucleon annihilation at rest
A. Bettini,R. Santangelo +1 more
TL;DR: In this paper, the authors obtained the relative values of the total and partial probabilities for the singlet and triplet at rest in hydrogen and deuterium and compared them with the predictions of the capture mechanism.
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