Preliminary values are presented for lifelimes of the Lambdac+ decaying into pK-pi+ and Ds decaying into fi pion. Also presented are preliminary results on samples of D0 --> K0bar K+ K- , including D0 --> K0bar fi, and D0 --> K0bar pi+pi- decays. The data are from the first run of Fermilab experiment E687 using the Fermilab Wide-Band Photon Spectrometer. Our lifetime values are (0.20 +/- 0.03 +/- 0.03) ps for the Lambdac+ and (0.50 +/- 0.06 +/- 0.03) ps for the Ds+ . We find preliminary values for the branching ratios B(D0 --> K0bar K+K- )/B(D0 --> K0bar pi+pi- ) and B(D0 --> K0bar fi )/B(D0 --> K0bar pi+ pi- )of 0.20 +/- 0.06 and 0.16 +/- 0.06, respectively; only statistical errors are quoted. Further work is in progress.
Some lifetimes and branching ratios for charmed hadrons produced in the Fermilab wide band photon beam.
BOCA, GIANLUIGI;VITULO, PAOLO;
1991-01-01
Abstract
Preliminary values are presented for lifelimes of the Lambdac+ decaying into pK-pi+ and Ds decaying into fi pion. Also presented are preliminary results on samples of D0 --> K0bar K+ K- , including D0 --> K0bar fi, and D0 --> K0bar pi+pi- decays. The data are from the first run of Fermilab experiment E687 using the Fermilab Wide-Band Photon Spectrometer. Our lifetime values are (0.20 +/- 0.03 +/- 0.03) ps for the Lambdac+ and (0.50 +/- 0.06 +/- 0.03) ps for the Ds+ . We find preliminary values for the branching ratios B(D0 --> K0bar K+K- )/B(D0 --> K0bar pi+pi- ) and B(D0 --> K0bar fi )/B(D0 --> K0bar pi+ pi- )of 0.20 +/- 0.06 and 0.16 +/- 0.06, respectively; only statistical errors are quoted. Further work is in progress.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
