Observation of pseudoscalar and axial vector resonances in pi(-) p -> K+K-pi(0)n at 18 GeV

Citation
Gs. Adams et al., Observation of pseudoscalar and axial vector resonances in pi(-) p -> K+K-pi(0)n at 18 GeV, PHYS LETT B, 516(3-4), 2001, pp. 264-272
Citations number
49
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
516
Issue
3-4
Year of publication
2001
Pages
264 - 272
Database
ISI
SICI code
0370-2693(20010920)516:3-4<264:OOPAAV>2.0.ZU;2-K
Abstract
The number of pseudoscalar mesons in the mass range from 1400 to 1500 MeV/c (2) has been a subject of considerable interest for many years, with severa l experiments having presented evidence for two closely spaced states. A ne w measurement of the reaction pi (-)p --> K(+)K(-)pi (0)n has been made at a beam energy of 18 GeV. A partial wave analysis of the K(+)K(-)pi (0) syst em shows evidence for three pseudoscalar resonances, eta (1295), eta (1416) , and eta (1485), as well as two axial vectors, f(1)(1285), and f(1)(1420). Their observed masses, widths and decay properties are reported. No signal was observed for C(1480), an I-G J(PC) = 1(+)1(--) state previously report ed in phi pi (0) decay. (C) 2001 Elsevier Science B.V. All rights reserved.