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Pion Pair Production in Photon - Photon Collisions at {SPEAR}

Phys.Lett. B105 (1981) 304-308, 1981

Abstract (data abstract)
SLAC-SPEAR. MARK 2 COLLABORATION. MEASUREMENT OF CROSS SECTION FOR GAMMA GAMMA --& gt; PI+ PI- AT PI PI INVARIANT MASS 500 TO 2000 MEV, IN E+ E- INTERACTIONS AT SQRT(S) = 4.5 TO 6.5 GEV. A STRONG SIGNAL AT THE F(1270) IS REPORTED. THE CROSS SECTION IS LARGE (APPROX. 100MB) BELOW THIS RESONANCE AND FALLS RAPIDLY ABOVE IT. THE WIDTH OF THE F --& gt; GAMMA GAMMA IS DETERMINED TO BE 3.6 +- 0.3 (DSYS=0.5) KEV (HELICITY LAMBDA = 2).

• #### Table 1

Data from F 3

10.17182/hepdata.31056.v1/t1

DATA REQUESTED FROM AUTHORS.