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). ( Europhysics Conference on High Energy Physics2009).
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.
