Branching fractions for Y(3S) -> pi⁰ h_b and psi(2S) -> pi⁰ h_c

CLEO Collaboration: J. Y. Ge , D. H. Miller , I. P. J. Shipsey , B. Xin , G. S. Adams , J. Napolitano , K. M. Ecklund , J. Insler

show 67 more authors

H. Muramatsu C. S. Park L. J. Pearson E. H. Thorndike S. Ricciardi C. Thomas M. Artuso S. Blusk R. Mountain T. Skwarnicki S. Stone L. M. Zhang G. Bonvicini D. Cinabro A. Lincoln M. J. Smith P. Zhou J. Zhu P. Naik J. Rademacker D. M. Asner K. W. Edwards K. Randrianarivony G. Tatishvili R. A. Briere H. Vogel P. U. E. Onyisi J. L. Rosner J. P. Alexander D. G. Cassel S. Das R. Ehrlich L. Gibbons S. W. Gray D. L. Hartill B. K. Heltsley D. L. Kreinick V. E. Kuznetsov J. R. Patterson D. Peterson D. Riley A. Ryd A. J. Sadoff X. Shi W. M. Sun J. Yelton P. Rubin N. Lowrey S. Mehrabyan M. Selen J. Wiss J. Libby M. Kornicer R. E. Mitchell C. M. Tarbert D. Besson T. K. Pedlar D. Cronin-Hennessy J. Hietala S. Dobbs Z. Metreveli K. K. Seth A. Tomaradze T. Xiao L. Martin A. Powell G. Wilkinson

Authors on Pith no claims yet

classification ✦ hep-ex

keywords candidatesgammatimesacquiredasymmetricbranchingcesrcleo

0 comments

read the original abstract

Using e^+e^- collision data corresponding to 5.88M Y(3S) [25.9M psi(2S)] decays and acquired by the CLEO III [CLEO-c] detectors operating at CESR, we study the single-pion transitions from Y(3S) [psi(2S)] to the respective spin-singlet states h_{b[c]}. Utilizing only the momentum of suitably selected transition-pi^0 candidates, we obtain the upper limit B(Y(3S) -> pi^0 h_b) < 1.2\times 10^{-3} at 90% confidence level, and measure B(psi(2S) -> pi^0 h_c) = (9.0+-1.5+-1.3)\times 10^{-4}. Signal sensitivities are enhanced by excluding very asymmetric pi^0 -> gamma gamma candidates.

This paper has not been read by Pith yet.

Branching fractions for Y(3S) -> pi⁰ h_b and psi(2S) -> pi⁰ h_c

discussion (0)