A search for the decay K-S -->pi(o) mu(+) mu(-) has been made by the NA48/1 Collaboration at the CERN SPS accelerator. The data were collected during 2002 with a high-intensity K-S beam. Six events were found with a background expectation of 0.22(-0.11)(+0.18) events. Using a vector matrix element and unit form factor, the measured branching ratio is B(K-S --> pi(o) mu(+) mu(-)) = [2.9(-1.2)(+1.5) (stat) +/- 0.2(syst)] X10(-9). (C) 2004 Elsevier B.V All rights reserved.
Observation of the rare decay K-S ->pi(0)mu(+)mu(-)
LAMANNA, GIANLUCA;COSTANTINI, FLAVIO;GIUDICI, SERGIO;SOZZI, MARCO STANISLAO;
2004-01-01
Abstract
A search for the decay K-S -->pi(o) mu(+) mu(-) has been made by the NA48/1 Collaboration at the CERN SPS accelerator. The data were collected during 2002 with a high-intensity K-S beam. Six events were found with a background expectation of 0.22(-0.11)(+0.18) events. Using a vector matrix element and unit form factor, the measured branching ratio is B(K-S --> pi(o) mu(+) mu(-)) = [2.9(-1.2)(+1.5) (stat) +/- 0.2(syst)] X10(-9). (C) 2004 Elsevier B.V All rights reserved.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
