Observation of Charmed-Baryon Production in $\mathrm{e^+ e^−}$ Annihilation
- Abrams, G. S.
- Alam, M. S.
- Dieterle, W. E.
- Dillon, J. B.
- Dorenbosch, J.
- Dorfan, J. M.
- Eaton, M. W.
- Feldman, G. J.
- Franklin, M. E. B.
- Gidal, G.
- Goldhaber, G.
- Hanson, G.
- Blocker, C. A.
- Hayes, K. G.
- Himel, T.
- Hitlin, D. G.
- Hollebeek, R. J.
- Innes, W. R.
- Jaros, J. A.
- Jenni, P.
- Johnson, A. D.
- Kadyk, J. A.
- Lnakford, A. J.
- Boyarski, A. M.
- Larsen, R. R.
- Longo, M. J.
- Lüth, V.
- Millikan, R. E.
- Nelson, M. E.
- Pang, C. Y.
- Patrick, J. F.
- Perl, M. L.
- Richter, B.
- Roussarie, A.
- Breidenbach, M.
- Russell, J. J.
- Scharre, D. L.
- Schindler, R. H.
- Schwitters, R. F.
- Siegrist, J. L.
- Strait, J.
- Taureg, H.
- Tonutti, M.
- Trilling, G. H.
- Vella, E. N.
- Burke, D. L.
- Vidal, R. A.
- Videau, I.
- Weiss, J. M.
- Zaccone, H.
- ARGUS Collaboration
- Carithers, W. C.
- Chinowsky, W.
- Coles, M. W.
- Cooper, S.
DOIAbstract
A peak in the pK−π+ and ¯pK+π− invariant-mass spectra at 2.285±0.006 GeV/c2 is observed, which is associated with the lowest-lying charmed baryon (Λc). A cross section times branching ratio of 0.037±0.012 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 Λ cross sections are also presented, allowing an estimate of the branching ratio B(Λc→pK−π+)=0.022±0.010
Add to ORKG