학술논문
Precision measurement of the K S meson lifetime with the KLOE detector
Document Type
Original Paper
Author
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.; The KLOE Collaboration
Source
The European Physical Journal C: Particles and Fields. March 2011 71(3):1-6
Subject
Language
English
ISSN
1434-6044
1434-6052
1434-6052
Abstract
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.