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Measurement of $\Omega^0_{\rm c}$ baryon production and branching-fraction ratio ${\rm BR(\Omega^0_c \rightarrow \Omega^- e^+\nu_e)} / {\rm BR(\Omega^0_c \rightarrow \Omega^- \pi^+)}$ in pp collisions at $\sqrt{s}$ = 13 TeV

The ALICE collaboration
Acharya, Shreyasi , Adamova, Dagmar , Agarwal, Apar , Aglieri Rinella, Gianluca , Aglietta, Luca , Agnello, Michelangelo , Agrawal, Neelima , Ahammed, Zubayer , Ahmad, Shakeel , Ahn, Sang Un
Phys.Rev.D 110 (2024) 032014, 2024.
https://doi.org/10.17182/hepdata.153205.v1

Abstract (data abstract)
The inclusive production of the charm-strange baryon $\Omega^0_{\rm c}$ is measured for the first time via its semileptonic decay into $\Omega^{-}\rm e^{+}\nu_{e}$ at midrapidity ($|y|<0.8$) in proton proton (pp) collisions at the centre-of-mass energy $\sqrt{s}=13$ TeV with the ALICE detector at the LHC. The transverse momentum ($p_{\rm T}$) differential cross section multiplied by the branching ratio is presented in the interval $2<p_{\rm T}<12 ~{\rm GeV}/c$. The branching-fraction ratio ${\rm BR}(\Omega^0_{\rm c} \rightarrow \Omega^{-}{\rm e}^{+}\nu_{\rm e})/ {\rm BR}(\Omega^0_{\rm c} \rightarrow \Omega^{-}{\pi}^{+})$ is measured to be 1.12 $\pm$ 0.22 (stat.) $\pm$ 0.27 (syst.). The branching-fraction ratio is consistent with theory calculations and is 2.3$\sigma$ lower than the value reported by the Belle Collaboration.

  • Table 1

    Data from Figure 3 top panel, Page 8

    10.17182/hepdata.153205.v1/t1

    The $p_{\rm T}$-differential production cross sections of inclusive $\Omega^0_{\rm c}$ baryons multiplied by the branching ratios (BR) into $\Omega^{-}{\rm e}^{+}\nu_{\rm...

  • Table 2

    Data from Figure 3 bottom panel, Page 8

    10.17182/hepdata.153205.v1/t2

    $p_{\rm T}$-differential branching-fraction ratio ${\rm BR}(\Omega^0_{\rm c}\rightarrow\Omega^{-}{\rm e}^{+}\nu_{\rm e})/{\rm BR}(\Omega^0_{\rm c}\rightarrow\Omega^{-}{\pi}^{+})$.

  • Table 3

    Data from Figure 4, Page 8

    10.17182/hepdata.153205.v1/t3

    Comparison of $p_{\rm T}$-independent branching-fraction ratio ${\rm BR}(\Omega^0_{\rm c}\rightarrow\Omega^{-}{\rm e}^{+}\nu_{\rm e})/{\rm BR}(\Omega^0_{\rm c}\rightarrow\Omega^{-}{\pi}^{+})$ between experiments and theoretical calculations.

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