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

页码：21 / 27

页数：7

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