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Observation of the decay Omega(0)(c)-->Omega(-)e(+)nu(e).
- Source :
-
Physical review letters [Phys Rev Lett] 2002 Oct 21; Vol. 89 (17), pp. 171803. Date of Electronic Publication: 2002 Oct 07. - Publication Year :
- 2002
-
Abstract
- Using the CLEO detector at the Cornell Electron Storage Ring we have observed the Omega(0)(c) (css ground state) in the decay Omega(0)(c)-->Omega(-)e(+)nu(e). We find a signal of 11.4+/-3.8(stat) events. The probability that we have observed a background fluctuation is 7.6x10(-5). We measure B(Omega(0)(c)-->Omega(-)e(+)nu(e)).sigma(e(+)e(-)-->Omega(0)(c)X)=(42.2+/-14.1(stat)+/-5.7(syst)) fb and R=[Gamma(Omega(0)(c)-->Omega(-)pi(+))]/[Gamma(Omega(0)(c)-->Omega(-)enu(e))]=00.41+/-0.19(stat)+/-0.04(syst). This is the first statistically significant observation of an individual decay mode of the Omega(0)(c) in e(+)e(-) annihilation and the first example of a baryon decaying via beta emission, where no quarks from the first generation participate in the reaction.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 89
- Issue :
- 17
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 12398660
- Full Text :
- https://doi.org/10.1103/PhysRevLett.89.171803