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@article{Albrecht:1991:10.1007/BF01558550,
author = {Albrecht, H and Ehrlichmann, H and Gläser, R and Harder, G and Krüger, A and Nau, A and Nilsson, AW and Nippe, A and Oest, T and Reidenbach, M and Schäfer, M and Schmidt-Parzefall, W and Schröder, H and Schulz, HD and Sefkow, F and Wurth, R and Appuhn, RD and Drescher, A and Hast, C and Herrera, G and Kolanoski, H and Lange, A and Lindner, A and Mankel, R and Scheck, H and Schieber, M and Schweda, G and Spaan, B and Walther, A and Wegener, D and Paulini, M and Reim, K and Volland, U and Wegener, H and Funk, W and Heintz, F and Stiewe, J and Werner, S and Ball, S and Gabriel, JC and Geyer, C and Hölscher, A and Hofmann, W and Holzer, B and Khan, S and Spengler, J and Britton, DI and Charlesworth, CEK and Edwards, KW and Kapitza, H and Krieger, P and Kutschke, R and MacFarlane, DB and McLean, KW and Orr, RS and Parsons, JA and Patel, PM and Prentice, JD and Seidel, SC and Swain, JD and Tsipolitis, G and Tzamariudaki, K and Yoon, TS and Ruf, T and Schael, S and Schubert, KR and Strahl, K },
doi = {10.1007/BF01558550},
journal = {Zeitschrift Fur Physik C Particles and Fields},
pages = {1--10},
title = {Observation of spin-parity 2+ dominance in the reaction γγ→ρ0ρ0 near threshold},
url = {http://dx.doi.org/10.1007/BF01558550},
volume = {50},
year = {1991}
}
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TY  - JOUR
AB  - The reaction γγ→π<sup>+</sup>π<sup>-</sup>π<sup>+</sup>π<sup>-</sup> has been studied with the ARGUS detector. The rate in the invariant mass region below 1.8 GeV/c<sup>2</sup> is found to be largely due to ρ<sup>0</sup>ρ<sup>0</sup> production. A spin-parity analysis shows a dominance of the partial wave (J<sup>P</sup>, J<inf>z</inf>)=(2<sup>+</sup>, 2) with a small admixture from J<sup>P</sup>=0<sup>+</sup>. The contribution of negative parity states is consistent with zero. The large ratio of cross sections σ(γγ→ρ<sup>0</sup>ρ<sup>0</sup>)/σ(γγ→ρ<sup>+</sup>ρ<sup>-</sup>)4, and the dominance of the J<sup>P</sup>=2<sup>+</sup> wave in the reaction γγ→ρ<sup>0</sup>ρ<sup>0</sup> is a signature consistent with the production of an exotic (I=2) resonance. © 1991 Springer-Verlag.
AU  - Albrecht,H
AU  - Ehrlichmann,H
AU  - Gläser,R
AU  - Harder,G
AU  - Krüger,A
AU  - Nau,A
AU  - Nilsson,AW
AU  - Nippe,A
AU  - Oest,T
AU  - Reidenbach,M
AU  - Schäfer,M
AU  - Schmidt-Parzefall,W
AU  - Schröder,H
AU  - Schulz,HD
AU  - Sefkow,F
AU  - Wurth,R
AU  - Appuhn,RD
AU  - Drescher,A
AU  - Hast,C
AU  - Herrera,G
AU  - Kolanoski,H
AU  - Lange,A
AU  - Lindner,A
AU  - Mankel,R
AU  - Scheck,H
AU  - Schieber,M
AU  - Schweda,G
AU  - Spaan,B
AU  - Walther,A
AU  - Wegener,D
AU  - Paulini,M
AU  - Reim,K
AU  - Volland,U
AU  - Wegener,H
AU  - Funk,W
AU  - Heintz,F
AU  - Stiewe,J
AU  - Werner,S
AU  - Ball,S
AU  - Gabriel,JC
AU  - Geyer,C
AU  - Hölscher,A
AU  - Hofmann,W
AU  - Holzer,B
AU  - Khan,S
AU  - Spengler,J
AU  - Britton,DI
AU  - Charlesworth,CEK
AU  - Edwards,KW
AU  - Kapitza,H
AU  - Krieger,P
AU  - Kutschke,R
AU  - MacFarlane,DB
AU  - McLean,KW
AU  - Orr,RS
AU  - Parsons,JA
AU  - Patel,PM
AU  - Prentice,JD
AU  - Seidel,SC
AU  - Swain,JD
AU  - Tsipolitis,G
AU  - Tzamariudaki,K
AU  - Yoon,TS
AU  - Ruf,T
AU  - Schael,S
AU  - Schubert,KR
AU  - Strahl,K
AU  - Waldi,R
AU  - Weseler,S
AU  - Botjani,B
AU  - Kernel,G
AU  - Krian,P
AU  - Krini,E
AU  - Pleko,M
AU  - ivko,T
AU  - Cronström,HI
AU  - Jönsson,L
AU  - Babaev,A
AU  - Danilov,M
AU  - Fominykii,B
AU  - Golutvin,A
AU  - Gorelov,I
AU  - Lubimov,V
AU  - Rostovtsev,A
AU  - Semenov,A
AU  - Semenov,S
AU  - Shevchenko,V
AU  - Soloshenko,V
AU  - Tchistilin,V
AU  - Tichomirov,I
AU  - Zaitsev,Y
AU  - Childers,R
AU  - Darden,CW
DO  - 10.1007/BF01558550
EP  - 10
PY  - 1991///
SN  - 0170-9739
SP  - 1
TI  - Observation of spin-parity 2+ dominance in the reaction γγ→ρ0ρ0 near threshold
T2  - Zeitschrift Fur Physik C Particles and Fields
UR  - http://dx.doi.org/10.1007/BF01558550
VL  - 50
ER  -
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