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CONF-06/021 Measurement of the Mass and Width and Study of the Spin of the Xi(1690)0 Resonance from Lambda_c+ -> Lambda K0bar K+ Decay at BABAR
Doc Type Conference Submissions
Record Created July 5, 2006
SLAC-PUB
SLAC-PUB-11990  No citations
Preprint # hep-ex/0607043
Abstract
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The Xi(1690)0 resonance is observed in the Lambda anti-K0 channel in the decay Lambdac+ --> Lambda anti-K0 K+, from a data sample 
corresponding to a total integrated luminosity of ~ 200 fb-1 recorded by the Babar detector at the PEPII asymmetric-energy e+ e- 
collider operating at ~ 10.58 GeV and ~ 10.54 GeV center-of-mass energies.
A fit to the Dalitz plot intensity distribution corresponding to the coherent superposition
of amplitudes describing Lambda a0(980)+ and Xi(1690)0 K+ production yields (preliminary) mass and width values of
1684.7 +/- 1.3 (stat.) +2.2 -1.6 (syst.) MeV/c2, and
8.1 +3.9 -3.5 (stat.) +1.0 -0.9 (syst.) MeV, respectively, for the Xi(1690)0, while the spin is found to be consistent with 
value of 1/2 on the basis of studies of the (Lambda KS) angular distribution.


Revisions and Files 1 revised July 5, 2006
File Date
Thumbnails
File Name File Type File Format File Size (Kb) Comments
26-JUL-2006 Fig01.eps Figure or plot eps 33.49
26-JUL-2006 Fig02.eps Figure or plot eps 41.71
26-JUL-2006 Fig03.eps Figure or plot eps 12.61
26-JUL-2006 Fig04.eps Figure or plot eps 18.70
26-JUL-2006 Fig05.eps Figure or plot eps 16.04
26-JUL-2006 Fig06.eps Figure or plot eps 16.00
26-JUL-2006 Fig07.eps Figure or plot eps 19.31
26-JUL-2006 Fig08.eps Figure or plot eps 15.67
26-JUL-2006 Fig09.eps Figure or plot eps 23.56
26-JUL-2006 Fig10.eps Figure or plot eps 12.89
26-JUL-2006 Fig11.eps Figure or plot eps 19.17
26-JUL-2006 abstract Abstract txt 0.78
26-JUL-2006 babar-pub-06021.pdf Paper (journal paper or conference submission by BABAR Collaboration) pdf 276.04
26-JUL-2006 babar-pub-06021.ps.gz Paper (journal paper or conference submission by BABAR Collaboration) ps.gz 202.71
Submitted To2006 International Conference on High Energy Physics (ICHEP'06)
Date SubmittedJuly 25, 2006
Categories
  • AWG: Charm