In this paper the mixing angle and the eta ' gluonium content extraction from the R_phi = Br(phi {(1020)} \to eta'gamma )/Br(phi {(1020)} to eta gamma ) is updated. The eta ' gluonium content is estimated by fitting R_phi , together with radiative light vector to pseudoscalar gamma and pseudoscalar to vector transitions plus eta ' to gamma gamma and pi0 to gamma gamma decays. The extracted parameters are the gluonium fraction Z2G = 0.11 ±0.04 and the pseudoscalar mixing angle phiP = (40.7 ±0.7)\circ .
DI MICCO, B. (2009). Measurement of the Pseudoscalar Mixing Angle and the eta ' Gluonium Content with the KLOE Detector. In Symposium on Meson Physics, Extended COSY-11 Collaboration Meeting (pp.63-70).
Measurement of the Pseudoscalar Mixing Angle and the eta ' Gluonium Content with the KLOE Detector
DI MICCO, Biagio
2009-01-01
Abstract
In this paper the mixing angle and the eta ' gluonium content extraction from the R_phi = Br(phi {(1020)} \to eta'gamma )/Br(phi {(1020)} to eta gamma ) is updated. The eta ' gluonium content is estimated by fitting R_phi , together with radiative light vector to pseudoscalar gamma and pseudoscalar to vector transitions plus eta ' to gamma gamma and pi0 to gamma gamma decays. The extracted parameters are the gluonium fraction Z2G = 0.11 ±0.04 and the pseudoscalar mixing angle phiP = (40.7 ±0.7)\circ .I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
