Measurements of branching fractions for electromagnetic transitions involving the chi(bJ)(1P) states
Abstract
Using (9.32, 5.88) million Y(2S; 3S) decays taken with the CLEO III detector, we obtain five product branching fractions for the exclusive processes Y(2S) -> gamma chi(b0,1,2)(1P) -> gamma gamma Y(1S) and Y(3S) -> gamma chi(b1,2)(1P) -> gamma gamma Y(1S). We observe the transition chi(b0)(1P) -> yY(1S) for the first time. Using the known branching fractions for B[Y2S) -> gamma chi(bJ)(1P)], we extract values for B[chi(bJ)(1P) -> gamma Y(1S)] for J = 0, 1, 2. In turn, these values can be used to unfold the Y(3S) product branching fractions to obtain values for B[Y(3S) -> gamma chi(b1,2)(1P)] for the first time individually. Comparison of these with each other and with the branching fraction B[Y(3S) -> gamma chi(b0)] previously measured by CLEO provides tests of relativistic corrections to electric dipole matrix elements.
Published in:
Physical Review D 83,5 (2011)
Link to original published article:
http://dx.doi.org/10.1103/PhysRevD.83.054003
Date of Version
March 2011
Recommended Citation
Kornicer, M.; Mitchell, R. E.; Tarbert, C. M.; Besson, D.; Pedlar, T. K.; Cronin-Hennessy, D.; Hietala, J.; Zweber, P.; Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Xiao, T.; Brisbane, S.; Martin, L.; Powell, A.; Spradlin, P.; Wilkinson, G.; Mendez, H.; Ge, J. Y.; Miller, D. H.; Shipsey, I. P. J.; Xin, B.; Adams, G. S.; Hu, D.; Moziak, B.; Napolitano, J.; Ecklund, K. M.; Insler, J.; Muramatsu, H.; Park, C. S.; Pearson, L. J.; Thorndike, E. H.; Yang, F.; Ricciardi, S.; Thomas, C.; Artuso, M.; Blusk, S.; Mountain, R.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Zhang, L. M.; Bonvicini, G.; Cinabro, D.; Lincoln, A.; Smith, M. J.; Zhou, P.; Zhu, J.; Naik, P.; Rademacker, J.; Asner, D. M.; Edwards, K. W.; Randrianarivony, K.; Tatishvili, G.; Briere, R. A.; Vogel, H.; Onyisi, P. U. E.; Rosner, J. L.; Alexander, J. P.; Cassel, D. G.; Das, S.; Ehrlich, R.; Fields, L.; Gibbons, L.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Kreinick, D. L.; Kuznetsov, V. E.; Patterson, J. R.; Peterson, D.; Riley, D.; Ryd, A.; Sadoff, A. J.; Shi, X.; Sun, W. M.; Yelton, J.; Rubin, P.; Lowrey, N.; Mehrabyan, S.; Selen, M.; Wiss, J.; and Libby, J., "Measurements of branching fractions for electromagnetic transitions involving the
chi(bJ)(1P) states" (2011). Department of Physics and Astronomy Faculty Publications. Paper 1271.
https://docs.lib.purdue.edu/physics_articles/1271