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Upsilon dipion transitions at energies near the Upsilon(4S) - art. no. 052003

Authors

Glenn, S Kwon, Y Lyon, AL Roberts, S Thorndike, EH Jessop, CP Lingel, K Marsiske, H Perl, ML Savinov, V Ugolini, D Zhou, X Coan, TE Fadeyev, V Korolkov, I Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, T Dambasuren, E Kopp, S Moneti, GC Mountain, R Schuh, S Skwarnicki, T Stone, S Titov, A Viehhauser, G Wang, JC Bartelt, J Csorna, SE McLean, KW Marka, S Xu, Z Godang, R Kinoshita, K Lai, IC Pomianowski, P Schrenk, S Bonvicini, G Cinabro, D Greene, R Perera, LP Zhou, GJ Chan, S Eigen, G Lipeles, E Miller, JS Schmidtler, M Shapiro, A Sun, WM Urheim, J Weinstein, AJ Wurthwein, F Jaffe, DE Masek, G Paar, HP Potter, EM Prell, S Sharma, V Asner, DM Gronberg, J Hill, TS Lange, DJ Morrison, RJ Nelson, HN Nelson, TK Roberts, D Behrens, BH Ford, WT Gritsan, A Krieg, H Roy, J Smith, JG Alexander, JP Baker, R Bebek, C Berger, BE Berkelman, K Boisvert, V Cassel, DG Crowcroft, DS Dickson, M von Dombrowski, S Drell, PS Ecklund, KM Ehrlich, R Foland, AD Gaidarev, P Galik, RS Gibbons, L Gittelman, B Gray, SW Hartill, DL Heltsley, BK Hopman, PI Kandaswamy, J Kreinick, DL Lee, T Liu, Y Mistry, NB Ng, CR Nordberg, E Ogg, M Patterson, JR Peterson, D Riley, D Soffer, A Valant-Spaight, B Warburton, A Ward, C Athanas, M Avery, P Jones, CD Lohner, M Prescott, C Rubiera, AI Yelton, J Zheng, J Brandenburg, G Briere, RA Ershov, A Gao, YS Kim, DYJ Wilson, R Yamamoto, H Browder, TE Li, Y Rodriguez, JL Sahu, SK Bergfeld, T Eisenstein, BI Ernst, J Gladding, GE Gollin, GD Hans, RM Johnson, E Karliner, I Marsh, MA Palmer, M Selen, M Thaler, JJ Edwards, KW Bellerive, A Janicek, R Patel, PM Sadoff, AJ Ammar, R Baringer, P Bean, A Besson, D Coppage, D Darling, C Davis, R Kotov, S Kravchenko, I Kwak, N Zhou, L Anderson, S Kubota, Y Lee, SJ Mahapatra, R O'Neill, JJ Poling, R Riehle, T Smith, A Alam, MS Athar, SB Ling, Z Mahmood, AH Timm, S Wappler, F Anastassov, A Duboscq, JE Gan, KK Hart, T Honscheid, K Kagan, H Kass, R Lee, J Schwarthoff, H Wolf, A Zoeller, MM Richichi, SJ Severini, H Skubic, P Undrus, A Bishai, M Chen, S Fast, J Hinson, JW Menon, N Miller, DH Shibata, EI Shipsey, IPJ

Citation

S. Glenn et al., Upsilon dipion transitions at energies near the Upsilon(4S) - art. no. 052003, PHYS REV D, 5905(5), 1999, pp. 2003

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW D

ISSN journal

05562821 → ACNP

Volume

5905

Issue

Year of publication

1999

Database

ISI

SICI code

0556-2821(19990301)5905:5<2003:UDTAEN>2.0.ZU;2-5

Abstract

Using a 4.19 fb(-1) data sample collected with the CLEO II detector at the Cornell Electron Storage Ring, we have searched for dipion transitions betw een pairs of Y resonances at center of mass energies E-c.m. = 10.58 GeV and E-c.m. = 10.52 GeV. We obtain the 90% confidence level upper limits B(Y(4S ) Y(2S)pi(+)pi(-))<3.9 x 10(-4) and B(Y(4S)-->Y(1S)pi(+)pi(-))< 1.2 x 10(-4 ). We also observe the transitions Y(3S)-->Y(1S) pi(+)pi(-), Y(3S)-->Y(2S)p i(+)pi(-), and Y(2S)-->Y(1S)pi(+)pi(-), from which we measure the cross sec tions for the radiative processes e(+)e(-)-->Y(3S) gamma and e(+)e(-)-->Y(2 S) gamma. We obtain sigma(ee-->Y(3S)gamma) =(17.8 +/- 3.0 +/- 1.7) pb and s igma(ee-->Y(2S)gamma) = (15.5 +/- 1.3 +/- 1.4) pb at E-c.m. = 10.58 GeV, an d sigma(ee-->Y(3S)gamma) = (27.3 +/- 5.0 +/- 2.6) pb and sigma(ee-->Y(2S)ga mma) = (16.3 +/- 1.8 +/- 1.5) pb at E-c.m. = 10.52 GeV, which we compare wi th theoretical predictions. [S0556-2821(99)02303-6].