Abstract
The study of the K±K0 missπ±π +π- channel (7016 events), from p̄p annihilations in a gaseous hydrogen target at NTP, with the OBELIX spectrometer at LEAR (CERN), is presented. A spin-parity analysis provides evidence for two axial vectors, one in the low KK̄π mass region, the well established f1(1285), decaying to a0(980) π, the second, the 1++ component of the old puzzling E/i, the fi(1420), decaying mainly to K*K̄, seen for the first time in pp annihilation at rest. The analysis confirms the dominant production of the pseudoscalar η(1405), decaying mainly to (Kπ)sK̄, and the existence of a second pseudoscalar in the same mass region, the η(1460), decaying mainly to K*K̄.
Lingua originale | Inglese |
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pagine (da-a) | 226-238 |
Numero di pagine | 13 |
Rivista | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 400 |
Numero di pubblicazione | 1-2 |
DOI | |
Stato di pubblicazione | Pubblicato - 8 mag 1997 |
Pubblicato esternamente | Sì |