Apr, 2019
Search for the B →y (4260)K, y (4260) →j /ψπ+π- decays
Physical Review D
- Volume
- 99
- Number
- 7
- First page
- 071102-1
- Last page
- 071102-8
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevD.99.071102
© 2019 authors. We report the results of a search for the B→Y(4260)K, Y(4260)→J/ψπ+π- decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb-1, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We investigate the J/ψπ+π- invariant mass distribution in the range 4.0 to 4.6 GeV/c2 using both B+→J/ψπ+π-K+ and B0→J/ψπ+π-KS0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B→Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+→Y(4260)K+)×B(Y(4260)→J/ψπ+π-)<1.4×10-5 and B(B0→Y(4260)K0)×B(Y(4260)→J/ψπ+π-)<1.7×10-5 at the 90% confidence level.
- Link information
-
- DOI
- https://doi.org/10.1103/PhysRevD.99.071102
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85065197551&origin=inward Open access
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85065197551&origin=inward
- URL
- https://link.aps.org/doi/10.1103/PhysRevD.99.071102
- ID information
-
- DOI : 10.1103/PhysRevD.99.071102
- ISSN : 2470-0010
- eISSN : 2470-0029
- SCOPUS ID : 85065197551