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199597 citationsJournal Article

Authors

K. W. Edwards · Carleton University

M. Ogg · Carleton University

A. Bellerive · McGill University

D. Britton · McGill University

E. R. F. Hyatt · McGill University

D. B. MacFarlane · McGill University

P. M. Patel · McGill University

Abstract

Using data collected by the CLEO II detector, we have observed two states decaying to ${\ensuremath{\Lambda}}_{c}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. Relative to the ${\ensuremath{\Lambda}}_{c}^{+}$, their mass splittings are measured to be $+307.5\ifmmode\pm\else\textpm\fi{}0.4\ifmmode\pm\else\textpm\fi{}1.0$ and $+342.2\ifmmode\pm\else\textpm\fi{}0.2\ifmmode\pm\else\textpm\fi{}0.5\mathrm{MeV}{/c}^{2}$, respectively; this represents the first measurement of the less massive state. These two states are consistent with being orbitally excited, isospin zero ${\ensuremath{\Lambda}}_{c}^{+}$ states.

Topics & Keywords

Quantum Chromodynamics and Particle Interactions Particle physics theoretical and experimental studies High-Energy Particle Collisions Research

Publication Details

Published in: Physical Review Letters

Volume 74, Issue 17, pp. 3331-3335

DOI: 10.1103/physrevlett.74.3331

Field-Weighted Citation Impact: 12.16

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Publication Details