Measurement of $\psip$ Radiative Decays

Details Measurement of $\psip$ Radiative Decays Measurement of $\psip$ Radiative Decays

2006-12-11

arxiv.org/abs/hep-ex/0612016v4

Phys.Rev.Lett.99:011802,2007

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.99.011802

Using 14 million psi(2S) events accumulated at the BESII detector, we report first measurements of branching fractions or upper limits for psi(2S) decays into gamma ppbar, gamma 2(pi^+pi^-), gamma K_s K^-pi^++c.c., gamma K^+ K^- pi^+pi^-, gamma K^{*0} K^- pi^+ +c.c., gamma K^{*0}\bar K^{*0}, gamma pi^+pi^- p pbar, gamma 2(K^+K^-), gamma 3(pi^+pi^-), and gamma 2(pi^+pi^-)K^+K^- with the invariant mass of hadrons below 2.9GeV/c^2. We also report branching fractions of psi(2S) decays into 2(pi^+pi^-) pi^0, omega pi^+pi^-, omega f_2(1270), b_1^\pm pi^\mp, and pi^0 2(pi^+pi^-) K^+K^-.

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