Analysis of the reaction π{sup −}Be → π{sup −}π{sup 0}π{sup 0}Be at VES

Journal Article · Fri Jan 22 00:00:00 EST 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4938637· OSTI ID:22499044

Ryabchikov, D.; Dorofeev, V.; Ekimov, A.; Gotman, V.; Ivashin, A.; Kachaev, I.; Kalendarev, V.; Kholodenko, M.; Konstantinov, V.; Matveev, V.; Nazarov, E.; Nikolaenko, V.; Plekhanov, A.; Salomatin, Yu.; Sugonyaev, V.; Volkov, E. ^[1]; Khokhlov, Y.; Zaitsev, A. ^[1]; Mikhasenko, M. ^[1]; Polyakov, B. ^[1]

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1. Institute for High Energy Physics, Protvino (Russian Federation)

We present the results of the analysis of diffractive reaction π{sup −}Be → π{sup −}π{sup 0}π{sup 0}Be measured with upgraded VES detector with the statistics of about 16 · 10{sup 6} events. The mass-independent partial-wave analysis is performed using set of 70 partial waves corresponding to natural-parity exchange mechanism and restricting the rank of spin-density matrix N{sub r} = 1. The data is divided into 40 MeV m(3π) bins and in 10 intervals of momentum transfer squared t′. The sub-density-matrix of mass independent PWA is subject to further mass dependent fits using Breit-Wigner resonant terms and coherent non-resonant backgrounds.

• OSTI ID: 22499044
• Journal Information: AIP Conference Proceedings, Vol. 1701, Issue 1; Conference: 11. conference on quark confinement and hadron spectrum, Saint Petersburg (Russian Federation), 8-12 Sep 2014; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BREIT-WIGNER FORMULA
DENSITY MATRIX
MASS
MEV RANGE 10-100
MOMENTUM TRANSFER
PARITY
PARTIAL WAVES
SPIN
STATISTICS