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

共 25 条

[11] ALOISIO A, HEPEX0107024, P94026
[12] A coupled channel analysis of the centrally produced K+K- and π+π- final states in pp interactions at 450 GeV/c
Barberis, D
Binon, FG
Close, FE
Danielsen, KM
Donskov, SV
Earl, BC
Evans, D
French, BR
Hino, T
Inaba, S
Jacholkowski, A
Jacobsen, T
Khaustov, GV
Kinson, JB
Kirk, A
Kondashov, AA
Lednev, AA
Lenti, V
Minashvili, I
Peigneux, JP
Romanovsky, V
Russakovich, N
Semenov, A
Shagin, PM
Shimizu, H
Singovsky, AV
Sobol, A
Stassinaki, M
Stroot, JP
Takamatsu, K
Tsuru, T
Baillie, OV
Votruba, MF
Yasu, Y
[J]. PHYSICS LETTERS B, 1999, 462 (3-4) : 462 - 470
[13] BROWN N, 1995, 2 DAPIENE PHYSICS HD, V2, P649
[14] SCALAR MESONS IN PHI RADIATIVE DECAY - THEIR IMPLICATIONS FOR SPECTROSCOPY AND FOR STUDIES OF CP VIOLATION AT PHI FACTORIES
CLOSE, FE
ISGUR, N
KUMANO, S
[J]. NUCLEAR PHYSICS B, 1993, 389 (02) : 513 - 533
[15] Large isospin mixing in φ radiative decay and the spatial size of the f0(980)-a0(980) mesons
Close, FE
Kirk, A
[J]. PHYSICS LETTERS B, 2001, 515 (1-2) : 13 - 16
[16] GIOVANNELLA S, 2002, 178 KLOE
[17] GIOVANNELLA S, 2002, 177 KLOE
[18] Gokalp A, 2001, PHYS REV D, V64, DOI 10.1103/PhysRevD.64.053017
[19] GOKALP A, COMMUNICATION
[20] Guiducci S., 2001, PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268), P353, DOI 10.1109/PAC.2001.987513

← 1 2 3 →