Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV

Details Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV

2008-09-24

arxiv.org/abs/0809.4120v1

Phys.Rev.Lett.102:012001,2009

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 postscript figures

Scientific paper

10.1103/PhysRevLett.102.012001

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

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