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We report a study of radiative decays of \chi_{bJ}(1P)(J=0,1,2) mesons into74 hadronic final states comprising charged and neutral pions, kaons, protons;out of these, 41 modes are observed with at least 5 standard deviationsignificance. Our measurements not only improve the previous measurements bythe CLEO Collaboration but also lead to first observations in many new modes.The large sample allows us to probe the total decay width of the \chi_{b0}(1P).In the absence of a statistically significant result, a 90% confidence-levelupper limit is set on the width at \Gamma_{total}< 2.4 MeV. Our results arebased on 24.7 fb^{-1} of e+e- collision data recorded by the Belle detector atthe \Upsilon(2S) resonance, corresponding to (157.8\pm3.6)\times10^6\Upsilon(2S) decays.

Study of \chi_{bJ}(1P) Properties in the Radiative \Upsilon(2S) Decays