APS » PROLA » Phys. Rev. Lett. » Volume 42 » Issue 26

Phys. Rev. Lett. 42, 1721 - 1724 (1979)

Confirmation of the Existence of the Σc++ and Λc+ Charmed Baryons and Observation of the Decay Λc+→Λπ+ and K̅ 0p
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C. Baltay, D. Caroumbalis, H. French, M. Hibbs, R. Hylton, M. Kalelkar *, K. Shastri, and A. Vogel
Columbia University, New York, New York 10027

A. M. Cnops, P. L. Connolly, S. A. Kahn, H. G. Kirk, M. J. Murtagh, R. B. Palmer, N. P. Samios, and M. Tanaka
Brookhaven National Laboratory, Upton, New York 11973

Received 19 March 1979

In a broadband neutrino exposure of the Fermilab 15-ft bubble chamber, we observe the production of the Σc++(2426) charmed baryon followed by its decay to Λc+(2260) and π+. We find the mass of the Λc+ to be 2257±10 MeV and the m(Σc++)-m(Λc+) mass difference to be 168±3 MeV. Previously unseen two-body decay modes of the Λc+(2260) are observed.


©1979 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v42/p1721
DOI: 10.1103/PhysRevLett.42.1721

* Present address: Rutgers University, New Brunswick, N. J. 08903.

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