- Abrams, GS;
- Alam, MS;
- Blocker, CA;
- Boyarski, AM;
- Breidenbach, M;
- Burke, DL;
- 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;
- Lnakford, AJ;
- Larsen, RR;
- Longo, MJ;
- Lüth, V;
- Millikan, RE;
- Nelson, ME;
- Pang, CY;
- Patrick, JF;
- Perl, ML;
- Richter, B;
- Roussarie, A;
- Russell, JJ;
- 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
A peak in the pK-+ and p»K+- invariant-mass spectra at 2.2850.006 GeV/c2 is observed, which is associated with the lowest-lying charmed baryon (c). A cross section times branching ratio of 0.0370.012 nb at Ec.m.=5.2 GeV is measured with a substantial fraction of the events produced with an equal recoiling mass. New measurements of inclusive p and cross sections are also presented, allowing an estimate of the branching ratio B(c+pK-+)=0.0220.010. © 1980 The American Physical Society.
