Search for the Z1(4050)+ and Z2(4250)+ states in B¯0→χc1K-π+ and B+→χc1KS0π+
Abstract
We search for the Z1(4050)+ and Z2(4250)+ states, reported by the Belle Collaboration, decaying to χc1π+ in the decays B¯0→χc1K-π+ and B+→χc1KS0π+ where χc1→J/ψγ. The data were collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e+e- collider operating at center-of-mass energy 10.58 GeV, and correspond to an integrated luminosity of 429fb-1. In this analysis, we model the background-subtracted, efficiency-corrected χc1π+ mass distribution using the Kπ mass distribution and the corresponding normalized Kπ Legendre-polynomial moments, and then test the need for the inclusion of resonant structures in the description of the χc1π+ mass distribution. No evidence is found for the Z1(4050)+ and Z2(4250)+ resonances, and 90% confidence level upper limits on the branching fractions are reported for the corresponding B-meson decay modes.
- Publication:
-
Physical Review D
- Pub Date:
- March 2012
- DOI:
- 10.1103/PhysRevD.85.052003
- arXiv:
- arXiv:1111.5919
- Bibcode:
- 2012PhRvD..85e2003L
- Keywords:
-
- 12.39.Mk;
- 12.40.Yx;
- 13.25.Hw;
- 14.40.Rt;
- Glueball and nonstandard multi-quark/gluon states;
- Hadron mass models and calculations;
- Decays of bottom mesons;
- High Energy Physics - Experiment
- E-Print:
- 15 pages, 12 postscript figures, to be published in Phys. Rev. D