A Measurement of $\gamma \gamma \to \rho^+ \rho^-$

The reaction γγ → ϱ + ϱ − → π + π − π 0 π 0 has been studied with the ARGUS detector at the e + e − storage ring DORIS II at DESY. Near threshold, the cross section for this reaction is about four times smaller than for the reaction γγ → ϱ 0 ϱ 0 .

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: INELASTIC SCATTERING
INELASTIC SCATTERING: ELECTRON POSITRON
EXCHANGE: TWO-PHOTON
TWO-PHOTON: EXCHANGE
PHOTON PHOTON: EXCLUSIVE REACTION
RHO(770): PAIR PRODUCTION
PAIR PRODUCTION: RHO(770)
CHANNEL CROSS SECTION: ENERGY DEPENDENCE

References(14)

Figures(0)

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Collaboration

•

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