Study of the $e^+ e^- \to \pi^+ \pi^- \pi^+ \pi^-$ Reaction in the 1.4-{GeV} to 2.18-{GeV} Energy Range - INSPIRE

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Study of the $e^+ e^- \to \pi^+ \pi^- \pi^+ \pi^-$ Reaction in the 1.4-{GeV} to 2.18-{GeV} Energy Range

Oct, 1981

4 pages

Published in:

Phys.Lett.B 109 (1982) 129-132

Published: 1982

DOI:

10.1016/0370-2693(82)90478-6

PDG: 2 (

{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}

Report number:

LAL 81/33

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Abstract: (Elsevier)

New measurements of thee + e − → π + π − π + π − cross section have been performed by the magnetic detector DM1 at DCI (ORSAY) in the 1.4−2.18 GeV total energy range with statistics of 11000 events. Assuming the4 π ± production is dominated by the ϱ′(1.6) we determine its parameters: M = 1.57 ± 0.02 (stat.) −0.00 +0.06 (syst.) GeV,Γ = 0.51 ± 0.04 (stat.) −0.01 +0.04 (syst.)GeV,Γ ρ ′ee B ϱ′→ ρ 0 π + π − = 2.67 ± 0.19 (stat.) −0.36 +0.27 (syst.)keV.

ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
PI: ELECTROPRODUCTION
ELECTROPRODUCTION: PI
PI: MULTIPLE PRODUCTION
MULTIPLE PRODUCTION: PI
RHO(1600): ELECTROPRODUCTION
ELECTROPRODUCTION: RHO(1600)

References(12)

Figures(0)

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•
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G. Penso
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,
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