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

Authors
Molchanov, VV Alkhazov, G Atamantchouk, AG Balatz, MY Bondar, NF Casey, D Cooper, PS Dauwe, LJ Davidenko, GV Dersch, U Dolgolenko, AG Dzyubenko, GB Edelstein, R Emediato, L Endler, AMF Engelfried, J Eschrich, I Escobar, CO Evdokimov, AV Ferbel, T Filimonov, IS Garcia, F Gaspero, M Giller, I Golovtsov, VL Gouffon, P Gulmez, E Hammer, C Kangling, H Iori, M Jun, SY Kaya, M Kilmer, J Kim, VT Kochenda, LM Konorov, I Kozhevnikov, AP Krivshich, AG Kruger, H Kubantsev, MA Kubarovsky, VP Kulyavtsev, AI Kuropatkin, NP Kurshetsov, VF Kushnirenko, A Kwan, S Lach, J Lamberto, A Landsberg, LG Larin, I Leikin, EM Li, YS Luksys, M Lungov, T Maleev, VP Mao, D Mao, CS Mao, ZL Mathew, P Mattson, M Matveev, V McCliment, E Moinester, MA Morelos, A Mukhin, VA Nelson, KD Nemitkin, AV Neoustroev, PV Newsom, C Nilov, AP Nurushev, SB Ocherashvili, A Onel, Y Ozel, E Ozkorucuklu, S Penzo, A Petrenko, SV Pogodin, P Procario, M Prutskoi, VA Ramberg, E Rappazzo, GF Razmyslovich, BV Rud, VI Russ, J Schiavon, P Simon, J Sitnikov, AI Skow, D Slattery, P Smith, VJ Srivastava, M Steiner, V Stepanov, V Stutte, L Svoiski, M Terentyev, NK Thomas, GP Uvarov, LN Vasiliev, AN Vavilov, DV Verebryusov, VS Victorov, VA Vishnyakov, VE Vorobyov, AA Vorwalter, K You, J Zhao, WH Zheng, SC Zhu, ZH Zielinski, M Zukanovich-Funchal, R
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
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → 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.