Study of the decay φ→π0π0γ with the KLOE detector

被引：194
|
作者：
Aloisio, A [1 ]
Ambrosino, F
Antonelli, A
Antonelli, M
Bacci, C
Bencivenni, G
Bertolucci, S
Bini, C
Bloise, C
Bocci, V
Bossi, F
Branchini, P
Bulychjov, SA
Cabibbo, G
Caloi, R
Campana, P
Capon, G
Carboni, G
Casarsa, M
Casavola, V
Cataldi, G
Ceradini, F
Cervelli, F
Cevenini, F
Chiefari, G
Ciambrone, P
Conetti, S
De Lucia, E
De Robertis, G
De Simone, P
De Zorzi, G
Dell'Agnello, S
Denig, A
Di Domenico, A
Di Donato, C
Di Falco, S
Doria, A
Dreucci, M
Erriquez, O
Farilla, A
Felici, G
Ferrari, A
Ferrer, ML
Finocchiaro, G
Forti, C
Franceschi, A
Franzini, P
Gatti, C
Gauzzi, P
Giovannella, S
机构：
[1] Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy
[2] Sezione Ist Nazl Fis Nucl, Naples, Italy
[3] Univ Bari, Dipartmento Fis, Bari, Italy
[4] Sezione Ist Nazl Fis Nucl, Bari, Italy
[5] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[6] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany
[7] Univ Lecce, Dipartimento Fis, I-73100 Lecce, Italy
[8] Sezione Ist Nazl Fis Nucl, Lecce, Italy
[9] Univ Pisa, Dipartimento Fis, Pisa, Italy
[10] Sezione Ist Nazl Fis Nucl, Pisa, Italy
[11] Univ Roma La Sapienza, Dipartimento Energet, Rome, Italy
[12] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[13] Sezione Ist Nazl Fis Nucl, Rome, Italy
[14] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy
[15] Univ Roma Tre, Dipartimento Fis, Rome, Italy
[16] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA
[17] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy
[18] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[19] Univ Virginia, Dept Phys, Charlottesville, VA 22903 USA
[20] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[21] Inst Theoret & Expt Phys, Moscow 117259, Russia
来源：
PHYSICS LETTERS B | 2002年 / 537卷 / 1-2期
关键词：
e(+)e(-) collisions; phi radiative decays; scalar mesons;
D O I：
10.1016/S0370-2693(02)01838-5
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have measured the branching ratio BR(phi-->pi(0)pi(0)gamma) with the KLOE detector using a sample of similar to5x10(7) phi decays. phi mesons are produced at DAPhiNE, the Frascati phi-factory. We find BR(phi-->pi(0)pi(0)gamma) = (1.09+/-0.03(stat)+/-0.05(syst)) x 10(-4). We fit the two-pion mass spectrum to models to disentangle contributions from various sources. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：21 / 27
页数：7
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