Confirmation of the Existence of the ${Σ_{c}}^{+ +}$ and ${Λ_{c}}^{+}$ Charmed Baryons and Observation of the Decay ${Λ_{c}}^{+} \to Λ π^{+}$ and ${\bar{K}}^{0} p$

Publisher Website

25 June 1979

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 42 (26) , 1721-1724
https://doi.org/10.1103/physrevlett.42.1721

Abstract

In a broadband neutrino exposure of the Fermilab 15-ft bubble chamber, we observe the production of the

{Σ_{c}}^{+ +} (2426)

charmed baryon followed by its decay to

{Λ_{c}}^{+} (2260)

and

π^{+}

. We find the mass of the

{Λ_{c}}^{+}

to be 2257±10 MeV and the

m ({Σ_{c}}^{+ +}) - m ({Λ_{c}}^{+})

mass difference to be 168±3 MeV. Previously unseen two-body decay modes of the

{Λ_{c}}^{+} (2260)

are observed.

Keywords

This publication has 14 references indexed in Scilit:

Opposite sign dimuon events produced in narrow band neutrino and antineutrino beams
Physics Letters B, 1977
Dilepton Production by Neutrinos in Neon
Physical Review Letters, 1977
$K^{0}$ Phenomena Associated with Neutrino-Induced $μ^{-} e^{+}$ Events
Physical Review Letters, 1977
Investigations of Neutrino Interactions with Two Muons in the Final State
Physical Review Letters, 1976
Observation of muon-neutrino reactions producing a positron and a strange particle
Physics Letters B, 1976
Further Observation of Dimuon Production by Neutrinos
Physical Review Letters, 1975
Evidence for $Δ S = - Δ Q$ Currents or Charmed-Baryon Production by Neutrinos
Physical Review Letters, 1975
Observation of New-Particle Production by High-Energy Neutrinos and Antineutrinos
Physical Review Letters, 1975
Discovery of a Narrow Resonance in $e^{+} e^{-}$ Annihilation
Physical Review Letters, 1974
Experimental Observation of a Heavy Particle $J$
Physical Review Letters, 1974