Precise measurements of the KS → γγ and KL → γγ decay rates
- Lai, A
- Marras, D
- Batley, JR
- Dosanjh, RS
- Gershon, TJ
- Kalmus, GE
- Lazzeroni, C
- Munday, DJ
- Olaiya, E
- Parker, MA
- White, TO
- Wotton, SA
- Arcidiacono, R
- Barr, G
- Bocquet, G
- Ceccucci, A
- Cuhadar-Dönszelmann, T
- Cundy, D
- Doble, N
- Falaleev, V
- Gatignon, L
- Gonidec, A
- Gorini, B
- Grafström, P
- Kubischta, W
- Lacourt, A
- Mikulec, I
- Norton, A
- Panzer-Steindel, B
- Tatishvili, G
- Wahl, H
- Cheshkov, C
- Hristov, P
- Kekelidze, V
- Madigojine, D
- Molokanova, N
- Potrebenikov, Y
- Zinchenko, A
- Martin, V
- Rubin, P
- Sacco, R
- Walker, A
- Contalbrigo, M
- Dalpiaz, P
- Duclos, J
- Frabetti, PL
- Gianoli, A
- Martini, M
- Petrucci, F
- Savrié, M
- Bizzeti, A
- Calvetti, M
- Collazuol, G
- Graziani, G
- Iacopini, E
- Lenti, M
- Martelli, F
- Veltri, M
- Eppard, M
- Hirstius, A
- Holtz, K
- Kleinknecht, K
- Koch, U
- Köpke, L
- Lopes da Silva, P
- Marouelli, P
- Mestvirishvili, I
- Pellmann, I
- Peters, A
- Schmidt, SA
- Schönharting, V
- Schué, Y
- Wanke, R
- Winhart, A
- Wittgen, M
- Chollet, JC
- Fayard, L
- Iconomidou-Fayard, L
- Unal, G
- Wingerter-Seez, I
- Anzivino, G
- Cenci, P
- Imbergamo, E
- Lubrano, P
- Mestvirishvili, A
- Nappi, A
- Pepe, M
- Piccini, M
- Casali, R
- Cerri, C
- Cirilli, M
- Costantini, F
- Fantechi, R
- Fiorini, L
- Giudici, S
- Mannelli, I
- Pierazzini, G
- Sozzi, M
- Cheze, JB
- de Beer, M
- Debu, P
- Derue, F
- Formica, A
- Granier de Cassagnac, R
- Gouge, G
- Marel, G
- Mazzucato, E
- Peyaud, B
- Turlay, R
- Vallage, B
- Holder, M
- Maier, A
- Ziolkowski, M
- Biino, C
- Cartiglia, N
- Marchetto, F
- Menichetti, E
- Pastrone, N
- Nassalski, J
- Rondio, E
- Szleper, M
- Wislicki, W
- Wronka, S
- Dibon, H
- Jeitler, M
- Markytan, M
- Neuhofer, G
- Pernicka, M
- Taurok, A
- Widhalm, L
Publication date
January 2003
DOI Publisher
Elsevier BV Journal
Physics Letters BAbstract
The KS → γγ decay rate has been measured with the NA48 detector using a high intensity short neutral beam from the CERN SPS. The measured branching ratio BR(KS → γγ) = (2.78 ± 0.06stat ± 0.04syst) x 10-6, obtained from 7461 ± 172 KS → γγ events, is significantly higher than the O(p4) prediction of chiral perturbation theory. Using a KL beam the ratio Γ(KL → γγ)/Γ(KL → π0π0π0) = (2.81 ± 0.02syst) ×10-3 has been measured. © 2002 Elsevier Science B.V. All rights reserved
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