We report the observation of two narrow structures in the mass spectra of the p±?(nS) (n=1, 2, 3) and p±hb(mP) (m=1, 2) pairs that are produced in association with a single charged pion in ?(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M1=(10?607.2±2.0)??MeV/c2, G1=(18.4±2.4)??MeV, and M2=(10?652.2±1.5)??MeV/c2, G2=(11.5±2.2)??MeV. The results are obtained with a 121.4??fb-1 data sample collected with the Belle detector in the vicinity of the ?(5S) resonance at the KEKB asymmetric-energy e+e- collider.
Revised: December 28, 2016 |
Published: March 20, 2012
Citation
Bondar A., A. Garmash, R. Mizuk, D. Santel, K. Kinoshita, I. Adachi, and H. Aihara, et al. 2012.Observation of two charged bottomoniumlike resonances in ?(5S) decays.Physical Review Letters 108, no. 12:Article No. 122001.PNNL-SA-87223.doi:10.1103/PhysRevLett.108.122001