Photon transitions in Upsilon(2S) and Upsilon(3S)
High Energy Physics - Experiment
2019-08-14 v1
Abstract
We have studied the inclusive photon spectra in Upsilon(2S) and \Upsilon(3S) decays using a large statistics data sample obtained with the CLEO III detector. We present the most precise measurements of electric dipole (E1) photon transition rates and photon energies for Upsilon(2S)->gamma chi_bJ(1P) and Upsilon(3S)->gamma chi_bJ(2P) J=0,1,2. We measure the rate for a rare E1 transition Upsilon(3S)->gamma chi_b0(1P) for the first time. We also set upper limits on the rates for the hindered magnetic dipole (M1) transitions to the eta_b(1S) and eta_b(2S) states.
Cite
@article{arxiv.hep-ex/0411068,
title = {Photon transitions in Upsilon(2S) and Upsilon(3S)},
author = {M. Artuso},
journal= {arXiv preprint arXiv:hep-ex/0411068},
year = {2019}
}
Comments
10 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2004/, submitted to PRL