UNIGE document Scientific Article
previous document  unige:41600  next document
add to browser collection
Title

Analysis of the π+ππ+π and π+π0ππ0 final states in quasi-real two-photon collisions at LEP

CollaborationWith : Achard, Pablo / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Echenard, Bertrand / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Natale, Sonia / Pohl, Martin / Straessner, Arno
Published in Physics Letters. B. 2006, vol. 638, no. 2-3, p. 128-139
Abstract The reactions γγ→π+π−π+π− and γγ→π+π0π−π0 are studied with the L3 detector at LEP in a data sample collected at centre-of-mass energies from 161 GeV to 209 GeV with a total integrated luminosity of 698 pb−1. A spin-parity-helicity analysis of the ρ0ρ0ρ0ρ0 and ρ+ρ− systems for two-photon centre-of-mass energies between 1 and 3 GeV shows the dominance of the spin-parity state 2+2+ with helicity 2. The contribution of 0+ and 0− spin-parity states is also observed, whereas contributions of 2− states and of a state with spin-parity 2+2+ and zero helicity are found to be negligible.
Identifiers
Full text
Structures
Citation
(ISO format)
L3 COLLABORATION. Analysis of the π+ππ+π and π+π0ππ0 final states in quasi-real two-photon collisions at LEP. In: Physics Letters. B, 2006, vol. 638, n° 2-3, p. 128-139. https://archive-ouverte.unige.ch/unige:41600

268 hits

38 downloads

Update

Deposited on : 2014-11-07

Export document
Format :
Citation style :