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Ambrosino, F.; Antonelli, A.; Antonelli, M.; Archilli, F.; Bencivenni, G.; Bini, C.; Bloise, C.; Bocchetta, S.; Bossi, F.; Branchini, P.; Capon, G.; Capussela, T.; Ceradini, F.; Ciambrone, P.; De Angelis, A.; De Lucia, E.; De Maria, M.; De Santis, A.; De Simone, P.; De Zorzi, G.; Denig, A.; Di Domenico, A.; Di Donato, C.; Di Micco, B.; Dreucci, M.; Felici, G.; Fiore, S.; Franzini, P.; Gatti, C.; Gauzzi, P.; Giovannella, S.; Graziani, E.; Jacewicz, M.; Kulikov, V.; Lee-Franzini, J.; Martini, M.; Massarotti, P.; Meola, S.; Miscetti, S.; Moulson, M.; Müller, S.; Murtas, F.; Napolitano, M.; Nguyen, F.; Palutan, M.; Passeri, A.; Patera, V.; Santangelo, P.; Sciascia, B.; Sibidanov, A.; Spadaro, T.; Taccini, C.; Tortora, L.; Valente, P.; Venanzoni, G.; Versaci, R.
European physical journal. C, Particles and fields, 3/2011, Letnik: 71, Številka: 3Journal Article
Using a large sample of pure, slow, short lived K0 mesons collected with KLOE detector at DAΦNE, we have measured the KS lifetime. From a fit to the proper time distribution we find τ(KS)=(89.562±0.029stat±0.043syst) ps. This is the most precise measurement to date of the short lived K0 meson lifetime, in good agreement with the world average derived from previous measurements. We observe no dependence of the lifetime on the direction of the KS in galactic coordinates.
