A Determination of the Muon Pair Branching Ratio of the Upsilon-prime Meson - INSPIRE

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A Determination of the Muon Pair Branching Ratio of the Upsilon-prime Meson

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

Feb, 1985

11 pages

Published in:

Z.Phys.C 28 (1985) 45

DOI:

10.1007/BF01550247

PDG:

{{\mathit \Upsilon}{(2S)}}

\rightarrow

{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}

Report number:

DESY-85-021

Experiments:

DESY-DORIS-ARGUS

View in:

KEK scanned document

reference search21 citations

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Abstract: (Springer)

Using the ARGUS detector at thee+e− storage ring DORIS-II, we have observed the decays of γ(9,460) andΥ'(10,023) into muon pairs. The ratio of the two observed rates determines Bμμ(γ') largely independent of acceptance uncertainties and absolute luminosity calibration, ifBμμ(γ) is known. From data with an integrated luminosity of 6.11/pb on the γ and 9.93/pb on the γ, using the present world averageBμμ(γ)=(2.9±0.2)%, we obtainBμμ(γ)=(1.57±0.59±0.68)%.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
UPSILON(10020): ELECTROPRODUCTION
ELECTROPRODUCTION: UPSILON(10020)
UPSILON(10020): LEPTONIC DECAY
LEPTONIC DECAY: UPSILON(10020)
FINAL STATE: DIMUON
DIMUON: FINAL STATE

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