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Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays

Publication ,  Journal Article
Abdesselam, A; Adachi, I; Adamczyk, K; Aihara, H; Said, SA; Arinstein, K; Arita, Y; Asner, DM; Aso, T; Atmacan, H; Aulchenko, V; Aushev, T ...
June 3, 2016

We report a study of radiative decays of \chi_{bJ}(1P)(J=0,1,2) mesons into 74 hadronic final states comprising charged and neutral pions, kaons, protons; out of these, 41 modes are observed with at least 5 standard deviation significance. Our measurements not only improve the previous measurements by the 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-level upper limit is set on the width at \Gamma_{total}< 2.4 MeV. Our results are based on 24.7 fb^{-1} of e+e- collision data recorded by the Belle detector at the \Upsilon(2S) resonance, corresponding to (157.8\pm3.6)\times10^6 \Upsilon(2S) decays.

Duke Scholars

Publication Date

June 3, 2016
 

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Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. A., Arinstein, K., … Zyukova, O. (2016). Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays.
Abdesselam, A., I. Adachi, K. Adamczyk, H. Aihara, S Al Said, K. Arinstein, Y. Arita, et al. “Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays,” June 3, 2016.
Abdesselam A, Adachi I, Adamczyk K, Aihara H, Said SA, Arinstein K, et al. Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays. 2016 Jun 3;
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Publication Date

June 3, 2016