We have measured several branching ratios for ψ′ decay using the data collected by the FNAL E835 experiment during the year 2000, obtaining B(ψ′→e+e-)=0.0068±0.0001±0.0004, B(ψ′→J/ψπ+π-)=0.292±0.005±0.018, B(ψ′→J/ψπ0π0)=0.167±0.005±0.014, and B(ψ′→J/ψη)=0.028±0.002±0.002. We also present a measurement of the dipion mass distribution in the decays ψ′→J/ψππ
Measurement of the branching ratios ψ′→e+e-, ψ′→J/ψππ, and ψ′→J/ψη
LO VETERE, MAURIZIO;MARINELLI, MAURO;PALLAVICINI, MARCO;PATRIGNANI, CLAUDIA;SANTRONI, ALBERTO;
2005-01-01
Abstract
We have measured several branching ratios for ψ′ decay using the data collected by the FNAL E835 experiment during the year 2000, obtaining B(ψ′→e+e-)=0.0068±0.0001±0.0004, B(ψ′→J/ψπ+π-)=0.292±0.005±0.018, B(ψ′→J/ψπ0π0)=0.167±0.005±0.014, and B(ψ′→J/ψη)=0.028±0.002±0.002. We also present a measurement of the dipion mass distribution in the decays ψ′→J/ψππ
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