Year: 2005
Type: article
Abstract: We have studied the inclusive photon spectra in $\ensuremath{\Upsilon}(2S)$ and $\ensuremath{\Upsilon}(3S)$ 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 $\ensuremath{\Upsilon}(2S)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{bJ}(1P)$ and $\ensuremath{\Upsilon}(3S)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{bJ}(2P)$ ($J=0$, 1, 2). We measure the rate for a rare $E1$ transition $\ensuremath{\Upsilon}(3S)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{b0}(1P)$ for the first time. We also set upper limits on the rates for the hindered magnetic dipole ($M1$) transitions to the ${\ensuremath{\eta}}_{b}(1S)$ and ${\ensuremath{\eta}}_{b}(2S)$ states.
Source: Physical Review Letters
Authors: M. Artuso, C. Boulahouache, S. Blusk, J. Butt, E. Dambasuren, O. Dorjkhaidav, J. Li, N. Menaa, R. Mountain, H. Muramatsu, R. Nandakumar, R. Redjimi, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, K. Zhang, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Bornheim, S. P. Pappas, A. J. Weinstein, J. L. Rosner, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, N. E. Adam, J. P. Alexander, K. Berkelman, D. G. Cassel, V. Crede, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Fields, R. S. Galik, L. Gibbons, B. Gittelman, R. Gray, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, H. Mahlke-Krüger, T. O. Meyer, P. U. E. Onyisi, J. R. Patterson, D. Peterson, J. Pivarski, D. Riley, A. Ryd, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, S. Stroiney, W. M. Sun, J. G. Thayer, D. Urner, T. Wilksen, M. Weinberger, S. B. Athar, P. Avery, L. Breva-Newell, R. Patel, V. Potlia, H. Stoeck, J. Yelton, P. Rubin, C. Cawlfield, B. I. Eisenstein, G. D. Gollin, I. Karliner, D. Kim, N. Lowrey, P. Naik, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, J. Wiss, K. W. Edwards, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, K. Y. Gao, D. T. Gong, Y. Kubota, B. W. Lang, S. Z. Li, R. Poling, A. W. Scott, A. Smith, C. J. Stepaniak, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, P. Zweber, J. Ernst, A. H. Mahmood, K. Arms, K. K. Gan, H. Severini, D. M. Asner, S. A. Dytman, W. Love, S. Mehrabyan, J. A. Mueller, V. Savinov, Z. Li, A. Lopez, H. Mendez, J. Ramirez, G. S. Huang, D. H. Miller, V. Pavlunin, B. Sanghi, E. I. Shibata, I. P. J. Shipsey, G. S. Adams, M. Chasse, M. Cravey, J. P. Cummings, I. Danko, J. Napolitano, C. S. Park, W. Park, J. B. Thayer, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, R. Stroynowski
Institutions: Syracuse University, Vanderbilt University, Wayne State University, California Institute of Technology, University of Chicago, Carnegie Mellon University, Cornell University, University of Florida, George Mason University, University of Illinois Urbana-Champaign, Institute of Particle Physics, Carleton University, University of Kansas, Luther College, University of Minnesota, Northwestern University, State University of New York, University at Albany, State University of New York, The Ohio State University, University of Oklahoma, University of Pittsburgh, University of Puerto Rico-Mayaguez, Purdue University West Lafayette, Rensselaer Polytechnic Institute, University of Rochester, Southern Methodist University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2156307181