Detection of φ→a0(980)γ, f0(980)γ and φ→ηγ, φ→η′γ with the KLOE detector at DAΦNE

被引：0

作者：

Lanfranchi, G ^{[1
]}

Aloisio, A ^{[1
]}

Ambrosino, F ^{[1
]}

Antonelli, A ^{[1
]}

Antonelli, M ^{[1
]}

Bacci, C ^{[1
]}

Barbiellini, G ^{[1
]}

Bellini, F ^{[1
]}

Bencivenni, G ^{[1
]}

Bertolucci, S ^{[1
]}

Bini, C ^{[1
]}

Bloise, C ^{[1
]}

Bocci, V ^{[1
]}

Bossi, F ^{[1
]}

Branchini, P ^{[1
]}

Bulychjov, SA ^{[1
]}

Cabibbo, G ^{[1
]}

Caloi, R ^{[1
]}

Campana, P ^{[1
]}

Capon, G ^{[1
]}

Carboni, G ^{[1
]}

Casarsa, M ^{[1
]}

Casavola, V ^{[1
]}

Cataldi, G ^{[1
]}

Ceradini, F ^{[1
]}

Cervelli, F ^{[1
]}

Cevenini, F ^{[1
]}

Chiefari, G ^{[1
]}

Ciambrone, P ^{[1
]}

Conetti, S ^{[1
]}

De Lucia, E ^{[1
]}

De Robertis, G ^{[1
]}

De Simone, P ^{[1
]}

De Zorzi, G ^{[1
]}

Dell'Agnello, S ^{[1
]}

Denig, A ^{[1
]}

Di Domenico, A ^{[1
]}

Di Donato, C ^{[1
]}

Di Falco, S ^{[1
]}

Doria, A ^{[1
]}

Dreucci, M ^{[1
]}

Erriquez, O ^{[1
]}

Farilla, A ^{[1
]}

Felici, G ^{[1
]}

Ferrari, A ^{[1
]}

Ferrer, ML ^{[1
]}

Finocchiaro, G ^{[1
]}

Forti, C ^{[1
]}

Franceschi, A ^{[1
]}

Franzini, P ^{[1
]}

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

来源：

PHOTON 2001 | 2002年

关键词：

D O I：

10.1142/9789812777157_0054

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

KLOE has analysed similar to 16.6 pb(-1) of total 30 pb(-1) collected at DA phi NE by the end of 2000. The preliminary results for the branching ratios BR(phi -> f(0)(980)gamma) = (23.7 +/- 0.6(stat)) x 10(-5) and BR(phi -> a(0)(980)gamma) = (5.8 +/- 0.5(stat)) x 10(-5) lead to a ratio BR(phi -> f(0)(980)gamma)/BR(phi -> a(0)(980)gamma) = 4.1 +/- 0.4(stat) with a systematic error which will not exceed 10%. The ratio BR(phi ->eta'gamma)/BR(phi -> eta gamma) has been measured to about 10% accuracy leading to a very accurate determination of the mixing angle phi p = (40(-1.5)(+1.7))degrees and to the most accurate determination of BR(phi -> eta'gamma) to date, BR(phi -> eta'gamma) = (6.8 +/- 0.6 +/- 0.5)center dot 10(-5).

引用

页码：268 / 273

页数：6

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