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Observation of a narrow charmoniumlike state in exclusive B+/--->K+/-pi+pi-J/psi decays.
- Source :
-
Physical review letters [Phys Rev Lett] 2003 Dec 31; Vol. 91 (26 Pt 1), pp. 262001. Date of Electronic Publication: 2003 Dec 23. - Publication Year :
- 2003
-
Abstract
- We report the observation of a narrow charmoniumlike state produced in the exclusive decay process B+/--->K+/-pi(+)pi(-)J/psi. This state, which decays into pi(+)pi(-)J/psi, has a mass of 3872.0+/-0.6(stat)+/-0.5(syst) MeV, a value that is very near the M(D0)+M(D(*0)) mass threshold. The results are based on an analysis of 152M B-Bmacr; events collected at the Upsilon(4S) resonance in the Belle detector at the KEKB collider. The signal has a statistical significance that is in excess of 10sigma.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 91
- Issue :
- 26 Pt 1
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 14754041
- Full Text :
- https://doi.org/10.1103/PhysRevLett.91.262001