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., D., Ambrosino, F., A., A., M., A., F., A., P., B., G., B., C., B., C., B., S., B., F., B., P., B., G., C., D., C., T., C., F., C., P., C., E. D., L., A. D., S., P. D., S., et al.. - (2009). (Europhysics Conference on High Energy Physics 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.
