Precision measurement of the $Λ_{c}^{+}$ baryon mass

The

Λ_{c}^{+}

baryon mass is measured using

Λ_{c}^{+} \to Λ K_{S}^{0} K^{+}

and

Λ_{c}^{+} \to Σ^{0} K_{S}^{0} K^{+}

decays reconstructed in

232 {fb}^{- 1}

of data collected with the BABAR detector at the PEP-II asymmetric-energy

e^{+} e^{-}

storage ring. The

Λ_{c}^{+}

mass is measured to be

2286.46 \pm 0.14 MeV / c^{2}

. The dominant systematic uncertainties arise from the amount of material in the tracking volume and from the magnetic field strength.

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Precision measurement of theΛc+baryon mass