Observation of an enhancement ine+e−→Υ(1S)π+π−,Υ(2S)π+π−, andΥ(3S)π+π−production nears=10.89  GeV

Tetraquark Interpretation of the BELLE Data on the AnomalousΥ(1S)π+π−andΥ(2S)π+π−Production near theΥ(5S)Resonance

(2010) Ahmed Ali et al.   PHYSICAL REVIEW LETTERS

A case for hidden tetraquarks based on cross section between and 11.20 GeV

(2010) Ahmed Ali et al.   PHYSICS LETTERS B

Measurement of thee+e−→bb¯Cross Section betweens=10.54and 11.20 GeV

(2009) B. Aubert et al.   PHYSICAL REVIEW LETTERS

Scalar resonance contributions to the dipion transition rates ofΥ(4S,5S)in the rescattering model

(2008) Ce Meng et al.   PHYSICAL REVIEW D

Observation of AnomalousΥ(1S)π+π−andΥ(2S)π+π−Production near theΥ(5S)Resonance

(2008) K.-F. Chen et al.   PHYSICAL REVIEW LETTERS

Review of Particle Physics

(2008) C. Amsler et al.   PHYSICS LETTERS B