Radiative decay width of the a2(1320)- meson

被引：13

作者：

Molchanov, VV ^{[1
]}

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

Gülmez, E

Hammer, C

Kangling, H

Iori, M

Jun, SY

Kaya, M

Kilmer, J

Kim, VT

Kochenda, LM

Konorov, I

Kozhevnikov, AP

Krivshich, AG

Krüger, H

Kubantsev, MA

Kubarovsky, VP

Kulyavtsev, AI

Kuropatkin, NP

Kurshetsov, VF

Kushnirenko, A

Kwan, S

Lach, J

Lamberto, A

Landsberg, LG

Larin, I

机构：

[1] Inst High Energy Phys, Protvino, Russia

[2] Ball State Univ, Muncie, IN 47306 USA

[3] Bogazici Univ, TR-80815 Bebek, Istanbul, Turkey

[4] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[5] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[6] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[7] Inst High Energy Phys, Beijing 100039, Peoples R China

[8] Inst Theoret & Expt Phys, Moscow 117259, Russia

[9] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[10] Moscow MV Lomonosov State Univ, Moscow, Russia

[11] Petersburg Nucl Phys Inst, St Petersburg, Russia

[12] Tel Aviv Univ, IL-69978 Tel Aviv, Israel

[13] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico

[14] Univ Fed Paraiba, BR-58059900 Joao Pessoa, Paraiba, Brazil

[15] Univ Bristol, Bristol BS8 1TL, Avon, England

[16] Univ Iowa, Iowa City, IA 52242 USA

[17] Univ Michigan, Flint, MI 48502 USA

[18] Univ Roma La Sapienza, Rome, Italy

[19] Ist Nazl Fis Nucl, Rome, Italy

[20] Univ Sao Paulo, Sao Paulo, Brazil

[21] Univ Trieste, Trieste, Italy

[22] Ist Nazl Fis Nucl, Trieste, Italy

来源：

PHYSICS LETTERS B | 2001年 / 521卷 / 3-4期

基金：

巴西圣保罗研究基金会; 以色列科学基金会; 美国国家科学基金会;

关键词：

radiative decay; Primakoff effect; a(2) (1320);

D O I：

10.1016/S0370-2693(01)01194-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Coherent pi (+)pi (-)pi (-) production in the interactions of a beam of 600GeV 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 been detected in the Coulomb (low q(2)) region. The Primakoff formalism used to extract radiative decay width of this meson yields Gamma = 284 +/- 25 +/- 25 keV, which is the most precise measurement to date. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：171 / 180

页数：10

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