Study of the charged three-pion system in the mass region of 1400–1900 MeV and the quantum numbers of the A3(1640)
1972; Elsevier BV; Volume: 36; Issue: 2 Linguagem: Inglês
10.1016/0550-3213(72)90223-4
ISSN1873-1562
AutoresC. Caso, D. Teodoro, R.O. Maddock, E. Bassler, Hans-Hellmut Nagel, H. Neumann, M. Sahini, P. Söding, A. Cantore, L. Liotta, S. P. Ratti, A. Daudin, Ronald A. Grossman,
Tópico(s)Advanced NMR Techniques and Applications
ResumoFrom an experiment on the reaction π+p → π+π+π−p at 11.7 GeV/c incident momentum we present a spin and parity analysis of the charged 3π system in the mass range of 1400–1900 MeV. We find a broad (Γ = 200–400 MeV) enhancement in the JP = 2−, fπ (S-wave) state, centered at about 1650 MeV, and no structure in the other fπ partial waves. We thus determine the JP quantum numbers of A3 → fπ to be JP = 2−.
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