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Precision measurement of the K sub( )Smeson lifetime with the KLOE detector

Using a large sample of pure, slow, short lived K super(0) mesons collected with KLOE detector at DA Phi NE, we have measured the K sub( )Slifetime. From a fit to the proper time distribution we find tau (K sub( )S=(89.562 plus or minus 0.029 sub(stat) plus or minus 0.043 sub(syst)) ps. This is the...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2011-03, Vol.71 (3), p.1-6
Main Authors: 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, Angelis, A, Lucia, E, Maria, M, Santis, A, Simone, P, Zorzi, G, Denig, A, Domenico, A, Donato, C, 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, Mueller, S, Murtas, F, Napolitano, M, Nguyen, F, Palutan, M, Passeri, A, Patera, V, Santangelo, P, Sciascia, B, Sibidanov, A, et. al
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Language:English
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Summary:Using a large sample of pure, slow, short lived K super(0) mesons collected with KLOE detector at DA Phi NE, we have measured the K sub( )Slifetime. From a fit to the proper time distribution we find tau (K sub( )S=(89.562 plus or minus 0.029 sub(stat) plus or minus 0.043 sub(syst)) ps. This is the most precise measurement to date of the short lived K super(0) 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 K sub( )Sin galactic coordinates.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-011-1604-7