Observation of $e^+e^- \\to \\pi^+ \\pi^- \\pi^0 \\chi_{bJ}$ and Search for $X_b \\to \\omega \\Upsilon(1S)$ at $\\sqrt{s}=10.867$ GeV
Journal
Physical Review Letters
Journal Volume
113
Journal Issue
14
Pages
142001
Date Issued
2014-08
Author(s)
Abstract
The e(+)e(-) �� �k(+)�k(-)�k(0)�q(bJ) (J = 0,1,2) processes are studied using a 118 fb(-1) data sample acquired with the Belle detector at a center-of-mass energy of 10.867 GeV. Unambiguous �k(+)�k(-)�k(0)�q(bJ) (J = 1,2), �s�q(b1) signals are observed, and indication for �s�q(b2) is seen, both for the first time, and the corresponding cross section measurements are presented. No significant �k(+)�k(-)�k(0)�q(b0) or �s�q(b0) signals are observed, and 90% confidence level upper limits on the cross sections for these two processes are obtained. In the �k(+)�k(-)�k(0) invariant mass spectrum, significant non-�s signals are also observed. We search for the X(3872)-like state (named X(b)) decaying into �s?(1S); no significant signal is observed with a mass between 10.55 and 10.65 GeV/c(2).
Type
journal article