We present the first observation of quantum interference in the process phi -> KSKL -> pi(+)pi(-)pi(+)pi(-), using the KLOE detector at the Frascati e(+)e(-) collider DA Phi NE. From about 5 x 10(4) neutral kaon pairs both decaying to pi(+)pi(-) pairs we obtain the distribution of At,. the difference between the two kaon decay times, which allows testing the validity of quantum mechanics and C P T invariance: no violation of either is observed. New or improved limits on coherence loss and C P T violation are presented. (c) 2006 Elsevier B.V. All rights reserved.
Ambrosino, F., Antonelli, A., Antonelli, M., Bacci, C., Beltrame, P., Bencivenni, G., et al. (2006). First observation of quantum interference in the process phi -> KSKL -> pi(+)pi(-)pi(+)pi(-): A test of quantum mechanics and C P T symmetry. PHYSICS LETTERS. SECTION B, 642(4), 315-321 [10.1016/j.physletb.2006.09.046].
First observation of quantum interference in the process phi -> KSKL -> pi(+)pi(-)pi(+)pi(-): A test of quantum mechanics and C P T symmetry
SANTOVETTI, EMANUELE
2006-01-01
Abstract
We present the first observation of quantum interference in the process phi -> KSKL -> pi(+)pi(-)pi(+)pi(-), using the KLOE detector at the Frascati e(+)e(-) collider DA Phi NE. From about 5 x 10(4) neutral kaon pairs both decaying to pi(+)pi(-) pairs we obtain the distribution of At,. the difference between the two kaon decay times, which allows testing the validity of quantum mechanics and C P T invariance: no violation of either is observed. New or improved limits on coherence loss and C P T violation are presented. (c) 2006 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
