Measurement of the $e^{+} e^{-} \to b \bar{b}$ cross section between $\sqrt{s}$ = 10.54-GeV and 11.20-GeV - INSPIRE

DataBETA

Measurement of the $e^{+} e^{-} \to b \bar{b}$ cross section between $\sqrt{s}$ = 10.54-GeV and 11.20-GeV

BaBar

Collaboration

Sep, 2008

7 pages

Published in:

Phys.Rev.Lett. 102 (2009) 012001

e-Print:

0809.4120 [hep-ex]

DOI:

10.1103/PhysRevLett.102.012001

PDG:

{{\mathit \Upsilon}{(10860)}}

Report number:

SLAC-PUB-13397,
BABAR-PUB-08042

Experiments:

SLAC-PEP2-BABAR

View in:

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Abstract: (arXiv)

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.

Note:

7 pages, 2 postscript figures

14.40.Gx
13.66.Bc
13.25.Gv
electron positron: colliding beams
bottom: pair production
cross section: energy dependence
Upsilon(11020)
Upsilon(10870)
mass: width
lepton: pair production

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