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Pion pair production in photon-photon collisions at spear |
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| Authors: | A Roussarie DL Burke GS Abrams MS Alam CA Blocker A Blondel AM Boyarski M Breidenbach WC Carithers W Chinowsky MW Coles S Cooper WE Dieterle JB Dillon J Dorenbosch JM Dorfan MW Eaton GJ Feldman H Zaccone |
| Institution: | 1. Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94305, USA;2. BLawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, CA 94720, USA |
| Abstract: | We report a measurement of the cross section for the process γγ→π+π? at invariant masses 500 MeV/c2 < mππ<2000 MeV/c2. A value for the radiative width of the f(1270) tensor meson Γf→γγ = 3.6 ± 0.3 ± 0.5 KeV (helicity λ = 2) has been obtained from a fit to the observed ππ mass spectrum. |
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