A ��-factory offers the possibility to select pure kaon beams. Neutral kaons from �� ��� KSKL are produced in a pure J PC = 1- quantum state. Detection of a kaon at large (small) times tags a KS (KL). This allows to perform precise measurement of kaon properties, as for example lifetime, and to study time evolution of neutral kaon system. The distribution of ��t, the difference between the two neutral kaon decay times, where both kaons decay into a ��+��- pair, provides unique opportunities for testing quantum mechanics and CPT symmetry. Using the full 2004-2005 data sample (L = 1.5fb-1) collected with the KLOE detector at DAF��NE, the Frascati e+e- collider, we update results of quantum mechanics and CPT invariance tests. We are finalizing the determination K S lifetimes using about 1/3 the whole KLOE data set. The proper time distribution of KS ��� ��+��- decays provides a competitive measurement of KS meson lifetime. �� Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Measurement of the KS lifetime and CPT symmetry tests in the neutral kaon system with quantum interferometry at KLOE / M., Dreucci; Ambrosino, Fabio; A., Antonelli; M., Antonelli; F., Archilli; P., Beltrame; G., Bencivenni; C., Bini; C., Bloise; S., Bocchetta; F., Bossi; P., Branchini; G., Capon; D., Capriotti; T., Capussela; F., Ceradini; P., Ciambrone; E. D., Lucia; A. D., Santis; P. D., Simone; G. D., Zorzi; A., Denig; A. D., Domenico; C. D., Donato; B. D., Micco; M., Dreucci; G., Felici; S., Fiore; C., Gatti; P., Gauzzi; S., Giovannella; E., Graziani; M., Jacewicz; V., Kulikov; G., Lanfranchi; J., Lee Franzini; M., Martini; Massarotti, Paolo; S., Meola; S., Miscetti; M., Moulson; S., Muller; F., Murtas; M., Napolitano; F., Nguyen; M., Palutan; A., Passeri; V., Patera; P., Santangelo; B., Sciascia; A., Sibidanov; T., Spadaro; L., Tortora; P., Valente; G., Venanzoni; R., Versaci. - (2009). (Intervento presentato al convegno Europhysics Conference on High Energy Physics nel 2009).
Measurement of the KS lifetime and CPT symmetry tests in the neutral kaon system with quantum interferometry at KLOE
AMBROSINO, FABIO;MASSAROTTI, PAOLO;
2009
Abstract
A ��-factory offers the possibility to select pure kaon beams. Neutral kaons from �� ��� KSKL are produced in a pure J PC = 1- quantum state. Detection of a kaon at large (small) times tags a KS (KL). This allows to perform precise measurement of kaon properties, as for example lifetime, and to study time evolution of neutral kaon system. The distribution of ��t, the difference between the two neutral kaon decay times, where both kaons decay into a ��+��- pair, provides unique opportunities for testing quantum mechanics and CPT symmetry. Using the full 2004-2005 data sample (L = 1.5fb-1) collected with the KLOE detector at DAF��NE, the Frascati e+e- collider, we update results of quantum mechanics and CPT invariance tests. We are finalizing the determination K S lifetimes using about 1/3 the whole KLOE data set. The proper time distribution of KS ��� ��+��- decays provides a competitive measurement of KS meson lifetime. �� Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
