A new measurement of the branching ratio of K-S -> gamma gamma

Authors
Lai, A Marras, D Bevan, A Dosanjh, RS Gershon, TJ Hay, B Kalmus, GE Lazzeroni, C Munday, DJ Olaiya, E Parker, MA White, TO Wotton, SA Barr, G Bocquet, G Ceccucci, A Cuhadar-Donszelmann, T Cundy, D D'Agostini, G Doble, N Falaleev, V Gatignon, L Gonidec, A Gorini, B Govi, G Grafstrom, P Kubischta, W Lacourt, A Lenti, M Mikulec, I Norton, A Palestini, S Panzer-Steindel, B Tatishvili, G Taureg, H Velasco, M Wahl, H Cheshkov, C Gaponenko, A Hristov, P Kekelidze, V Madigojine, D Molokanova, N Potrebenikov, Y Tkatchev, A Zinchenko, A Knowles, I Martin, V Sacco, R Walker, A Contalbrigo, M Dalpiaz, P Duclos, J Frabetti, PL Gianoli, A Martini, M Petrucci, F Savrie, M Bizzeti, A Calvetti, M Collazuol, G Graziani, G Iacopini, E Martelli, F Veltri, M Becker, HG Eppard, M Fox, H Holtz, K Kalter, A Kleinknecht, K Koch, U Kopke, L da Silva, PL Marouelli, P Pellmann, I Peters, A Renk, B Schmidt, SA Schonharting, V Schue, Y Wanke, R Winhart, A Wittgen, M Chollet, JC Fayard, L Iconomidou-Fayard, L Ocariz, J Unal, G Wingerter-Seez, I Anzivino, G Cenci, P Imbergamo, E Lubrano, P Mestvirishvili, A Nappi, A Pepe, M Piccini, M Bertanza, L Carosi, R Casali, R Cerri, C Cirilli, M Costantini, F Fantechi, R Giudici, S Mannelli, I Pierazzini, G Sozzi, M Cheze, JB Cogan, J De Beer, M Debu, P Formica, A de Cassagnac, RG Mazzucato, E Peyaud, B Turlay, R Vallage, B Holder, M Maier, A Ziolkowski, M Arcidiacono, R Biino, C Cartiglia, N Guida, R Marchetto, F Menichetti, E Pastrone, N Nassalski, J Rondio, E Szleper, M Wislicki, W Wronka, S Dibon, H Fischer, G Jeitler, M Markytan, M Neuhofer, G Pernicka, M Taurok, A Widhalm, L
Citation
A. Lai et al., A new measurement of the branching ratio of K-S -> gamma gamma, PHYS LETT B, 493(1-2), 2000, pp. 29-35
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
493
Issue
1-2
Year of publication
2000
Pages
29 - 35
Database
ISI
SICI code
0370-2693(20001109)493:1-2<29:ANMOTB>2.0.ZU;2-F
Abstract
The decay rate of K-S --> gamma gamma has been measured with the NA48 detec tor at the CERN SPS. A total of 149 K-S --> gamma gamma events have been ob served. The branching ratio is determined to be (2.58 +/- 0.36(stat) +/- 0. 22(sys)) x 10(-6). (C) 2000 Elsevier Science B.V. All rights reserved.