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

Authors

Adams, GS Adams, T Bar-Yam, Z Bishop, JM Bodyagin, VA Brown, DS Cason, NM Chung, SU Cummings, JP Danyo, K Demianov, AI Denisov, S Dorofeev, V Dowd, JP Eugenio, P Fan, XL Gribushin, AM Hackenburg, RW Hayek, M Hu, J Ivanov, EI Joffe, D Kachaev, I Kern, W King, E Kodolova, OL Korotkikh, VL Kostin, MA Kuhn, J Lipaev, V Losecco, JM Lu, M Manak, JJ Napolitano, J Nozar, M Olchanski, C Ostrovidov, AI Pedlar, TK Popov, A Ryabchikov, D Sanjari, AH Sarycheva, LI Seth, KK Shenhav, N Shen, X Shephard, WD Sinev, NB Stienike, DL Taegar, SA Thompson, DR Tomaradze, A Vardanyan, IN Weygand, DP White, D Willutzki, HJ Yershov, AA

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

Categorie Soggetti

Physics

Journal title

PHYSICS LETTERS B

ISSN journal

03702693 → 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.