Search for the doubly charmed baryon $\Xi_{cc}^{+}$

TL;DR

This study searches for the doubly charmed baryon $\\Xi_{cc}^{+}$ in proton-proton collisions using LHCb data but finds no significant signal, setting upper limits on its production relative to other baryons.

Contribution

First search for the $\\Xi_{cc}^{+}$ baryon in the specified decay channel using extensive LHCb data, establishing upper limits on its production cross-section.

Findings

No significant $\\Xi_{cc}^{+}$ signal observed.

Upper limits set on production cross-section ratios.

Limits vary with mass and lifetime hypotheses.

Abstract

A search for the doubly charmed baryon $\Xi_{cc}^{+}$ is performed through its decay to the $\Lambda_c^+ K^- \pi^+$ final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13$\mathrm{\,Te\kern -0.1em V}$. The data correspond to a total integrated luminosity of $9\,\mathrm{fb}^{-1}$. No significant signal is observed in the mass range from 3.4 to 3.8$\mathrm{\,Ge\kern -0.1em V}/c^2$. Upper limits are set at $95\%$ credibility level on the ratio of the $\Xi_{cc}^{+}$ production cross-section times the branching fraction to that of $\Lambda_c^+$ and $\Xi_{cc}^{++}$ baryons. The limits are determined as functions of the $\Xi_{cc}^{+}$ mass for different lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15$\mathrm{\,Ge\kern -0.1em V}/c$.