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Pion pair production in photon-photon collisions at spear

  • Author(s): Roussarie, A;
  • Burke, DL;
  • Abrams, GS;
  • Alam, MS;
  • Blocker, CA;
  • Blondel, A;
  • Boyarski, AM;
  • Breidenbach, M;
  • Carithers, WC;
  • Chinowsky, W;
  • Coles, MW;
  • Cooper, S;
  • Dieterle, WE;
  • Dillon, JB;
  • Dorenbosch, J;
  • Dorfan, JM;
  • Eaton, MW;
  • Feldman, GJ;
  • Franklin, MEB;
  • Gidal, G;
  • Goldhaber, G;
  • Hanson, G;
  • Hayes, KG;
  • Himel, T;
  • Hitlin, DG;
  • Hollebeek, RJ;
  • Innes, WR;
  • Jaros, JA;
  • Jenni, P;
  • Johnson, AD;
  • Kadyk, JA;
  • Lankford, AJ;
  • Larsen, RR;
  • Levi, M;
  • Lüth, V;
  • Millikan, RE;
  • Nelson, ME;
  • Pang, CY;
  • Patrick, JF;
  • Perl, ML;
  • Richter, B;
  • Scharre, DL;
  • Schindler, RH;
  • Schwitters, RF;
  • Siegrist, JL;
  • Strait, J;
  • Taureg, H;
  • Tonutti, M;
  • Trilling, GH;
  • Vella, EN;
  • Vidal, RA;
  • Videau, I;
  • Weiss, JM;
  • Zaccone, H
  • et al.
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. © 1981.

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