Radiative decay width of the a(2)(1320)(-) meson

Citation
Vv. Molchanov et al., Radiative decay width of the a(2)(1320)(-) meson, PHYS LETT B, 521(3-4), 2001, pp. 171-180
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
521
Issue
3-4
Year of publication
2001
Pages
171 - 180
Database
ISI
SICI code
0370-2693(20011129)521:3-4<171:RDWOTA>2.0.ZU;2-7
Abstract
Coherent pi (+)pi (-)pi (-) production in the interactions of a beam of 600 GeV pi (-) mesons with C, Cu and Pb nuclei has been studied with the SELEX facility (Experiment E781 at Fermilab). The a(2)(1320) meson signal has bee n detected in the Coulomb (low q(2)) region. The Primakoff formalism used t o extract radiative decay width of this meson yields Gamma = 284 +/- 25 +/- 25 keV, which is the most precise measurement to date. (C) 2001 Elsevier S cience B.V. All rights reserved.