Search for the decay φ → K0(K)over-bar0γ with the KLOE experiment

被引：17

作者：

Ambrosino, F. ^{[3
,4
]}

Antonelli, A. ^{[1
]}

Antonelli, M. ^{[1
]}

Archilli, F. ^{[8
,9
]}

Beltrame, P. ^{[2
]}

Bencivenni, G. ^{[1
]}

Bertolucci, S. ^{[1
]}

Bini, C. ^{[6
,7
]}

Bloise, C. ^{[1
]}

Bocchetta, S. ^{[10
,11
]}

Bossi, F. ^{[1
]}

Branchini, P. ^{[11
]}

Capon, G. ^{[1
]}

Capussela, T. ^{[1
]}

Ceradini, F. ^{[10
,11
]}

Ciambrone, P. ^{[1
]}

De Lucia, E. ^{[1
]}

De Santis, A. ^{[6
,7
]}

De Simone, P. ^{[1
]}

De Zorzi, G. ^{[6
,7
]}

Denig, A. ^{[2
]}

Di Domenico, A. ^{[6
,7
]}

Di Donato, C. ^{[4
]}

Di Micco, B. ^{[10
,11
]}

Dreucci, M. ^{[1
]}

Felici, G. ^{[1
]}

Fiore, S. ^{[6
,7
]}

Franzini, P. ^{[6
,7
]}

Gatti, C. ^{[1
]}

Gauzzi, P. ^{[6
,7
]}

Giovannella, S. ^{[1
]}

Graziani, E. ^{[11
]}

Lanfranchi, G. ^{[1
]}

Lee-Franzini, J. ^{[1
,12
]}

Martini, M. ^{[1
,5
]}

Massarotti, P. ^{[3
,4
]}

Meola, S. ^{[3
,4
]}

Miscetti, S. ^{[1
]}

Moulson, M. ^{[1
]}

Mueller, S. ^{[2
]}

Murtas, F. ^{[1
]}

Napolitano, M. ^{[3
,4
]}

Nguyen, F. ^{[10
,11
]}

Palutan, M. ^{[1
]}

Pasqualucci, E. ^{[7
]}

Passeri, A.

Patera, V. ^{[1
,5
]}

Santangelo, P. ^{[1
]}

Sciascia, B. ^{[1
]}

Spadaro, T. ^{[1
]}

机构：

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

[2] Johannes Gutenberg Univ Mainz, Inst Kernphys, Mainz, Germany

[3] Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy

[4] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

[5] Univ Sapienza Roma, Dipartimento Energet, Rome, Italy

[6] Univ Sapienza Roma, Dipartimento Fis, Rome, Italy

[7] Ist Nazl Fis Nucl, Sez Roma, Rome, Italy

[8] Univ Tor Vergata, Dipartimento Fis, Rome, Italy

[9] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy

[10] Univ Roma Tre, Dipartimento Fis, Rome, Italy

[11] Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy

[12] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA

[13] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China

来源：

PHYSICS LETTERS B | 2009年 / 679卷 / 01期

关键词：

KLOE; phi radiative decays; Scalar mesons; Kaons; RADIATIVE DECAYS; DETECTOR;

D O I：

10.1016/j.physletb.2009.07.013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have searched for the decay phi -> K-0(K) over bar (0)gamma, by detecting K-S pairs plus a photon and with the K-S-mesons decaying to pi(+)pi(-), in a sample of about 1.5 x 10(9) phi-decays collected by the KLOE experiment at DA Phi NE. The reaction proceeds through the intermediate states f(0)(980)gamma, a(0)(980)gamma. We find five events with 3.2 events expected from background processes. We obtain the upper limit: BR(phi -> K-0(K) over bar (0)gamma) < 1.9 x 10(-8) at 90% CL. (C) 2009 Elsevier B.V. All rights reserved.

引用

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页码：10 / 14

页数：5

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