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Phys Rev Lett. 2009 Jan 09;102(1):012001. doi: 10.1103/PhysRevLett.102.012001. Epub 2009 Jan 09.

Measurement of the e;{+}e;{-}-->bb[over ] Cross Section between sqrt[s]=10.54 and 11.20 GeV.

Physical review letters

B Aubert, M Bona, Y Karyotakis, J P Lees, V Poireau, E Prencipe, X Prudent, V Tisserand, J Garra Tico, E Grauges, L Lopez, A Palano, M Pappagallo, G Eigen, B Stugu, L Sun, G S Abrams, M Battaglia, D N Brown, R N Cahn, R G Jacobsen, L T Kerth, Yu G Kolomensky, G Lynch, I L Osipenkov, M T Ronan, K Tackmann, T Tanabe, C M Hawkes, N Soni, A T Watson, H Koch, T Schroeder, D Walker, D J Asgeirsson, B G Fulsom, C Hearty, T S Mattison, J A McKenna, M Barrett, A Khan, V E Blinov, A D Bukin, A R Buzykaev, V P Druzhinin, V B Golubev, A P Onuchin, S I Serednyakov, Yu I Skovpen, E P Solodov, K Yu Todyshev, M Bondioli, S Curry, I Eschrich, D Kirkby, A J Lankford, P Lund, M Mandelkern, E C Martin, D P Stoker, S Abachi, C Buchanan, J W Gary, F Liu, O Long, B C Shen, G M Vitug, Z Yasin, L Zhang, V Sharma, C Campagnari, T M Hong, D Kovalskyi, M A Mazur, J D Richman, T W Beck, A M Eisner, C J Flacco, C A Heusch, J Kroseberg, W S Lockman, A J Martinez, T Schalk, B A Schumm, A Seiden, M G Wilson, L O 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Affiliations

  1. Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, F-74941 Annecy-Le-Vieux, France.

PMID: 19257181 DOI: 10.1103/PhysRevLett.102.012001

Abstract

We report e;{+}e;{-}-->bb[over ] cross section measurements by the BABAR experiment performed during an energy scan in the range of 10.54 to 11.20 GeV at the SLAC PEP-II e;{+}e;{-} collider. A total relative error of about 5% is reached in more than 300 center-of-mass energy steps, separated by about 5 MeV. These measurements can be used to derive precise information on the parameters of the Upsilon(10860) and Upsilon(11020) resonances. In particular we show that their widths may be smaller than previously measured.

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