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Phys. Rev. D 73, 072001 (2006) [22 pages]

Partial wave analysis of the π-π-π+ and π-π0π0 systems and the search for a JPC=1-+ meson

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A. R. Dzierba, R. Mitchell, E. Scott, M. R. Shepherd, P. Smith, M. Swat, and S. Teige
Department of Physics, Indiana University, Bloomington, Indiana 47405, USA

A. P. Szczepaniak
Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405, USA

S. P. Denisov, V. Dorofeev, I. Kachaev, V. Lipaev, A. V. Popov, and D. I. Ryabchikov
Institute for High Energy Physics, Protvino, Russian Federation 142284

V. A. Bodyagin and A. Demianov
Nuclear Physics Institute, Moscow State University, Moscow, Russian Federation 119992

Received 25 October 2005; published 5 April 2006

A partial wave analysis (PWA) of the π-π-π+ and π-π0π0 systems produced in the reaction π-p→(3π)-p at 18  GeV/c was carried out using an isobar model assumption. This analysis is based on 3.0 M π-π0π0 events and 2.6 M π-π-π+ events and shows production of the a1(1260), a2(1320), π2(1670), and a4(2040) resonances. Results of detailed studies of the stability of partial wave fits are presented. An earlier analysis of 250 K π-π-π+ events from the same experiment showed possible evidence for a JPC=1-+ exotic meson with a mass of ∼1.6  GeV/c2 decaying into ρπ. In this analysis of a higher statistics sample of the (3π)- system in two charged modes we find no evidence of an exotic meson.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.73.072001
DOI:
10.1103/PhysRevD.73.072001
PACS:
11.80.Cr, 13.60.Le, 13.60.Rj
 
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