Abstract
A measurement of the spin of the Ω− hyperon produced through the exclusive process Ξ0c→Ω−K+ is presented using a total integrated luminosity of 116 fb−1 recorded with the BABAR detector at the e+e− asymmetric-energy B factory at SLAC. Under the assumption that the Ξ0c has spin 1/2, the angular distribution of the Λ from Ω−→ΛK− decay is inconsistent with all half-integer Ω− spin values other than 3/2. Lower statistics data for the process Ω0c→Ω−π+ from a 230 fb−1 sample are also found to be consistent with Ω− spin 3/2. If the Ξ0c spin were 3/2, an Ω− spin of 5/2 could not be excluded.
Original language | English |
---|---|
Article number | 112001 |
Journal | Physical Review Letters |
Volume | 97 |
Issue number | 11 |
Early online date | 12 Sept 2006 |
DOIs | |
Publication status | Published - 15 Sept 2006 |