The inclusive production of the charm-strange baryon ωc0 is measured for the first time via its semileptonic decay into ω-e+νe at midrapidity (|y|<0.8) in proton-proton (pp) collisions at the center-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2<12 GeV/c. The branching-fraction ratio BR(ωc0->ω-e+νe)/BR(ωc0->ω-π+) is measured to be 1.12+-0.22 (stat) +-0.27 (syst). Comparisons with other experimental measurements, as well as with theoretical calculations, are presented.

Measurement of Ω_c baryon production and branching-fraction ratio BR(Ω_c^0→Ω^−e^+v_e)/BR(Ω_c^0→Ω^−π^+) in pp collisions at \sqrt{s} = 13 TeV / Acharya, S., Adamová, D., Agarwal, A., Aglieri Rinella, G., Aglietta, L., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, S., Ahn, S. u., Ahuja, I., Akindinov, A., Akishina, V., Al-Turany, M., Aleksandrov, D., Alessandro, B., Alfanda, H. m., Alfaro Molina, R., Ali, B., Alici, A., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - STAMPA. - 110:3(2024). [10.1103/physrevd.110.032014]

Measurement of Ω_c baryon production and branching-fraction ratio BR(Ω_c^0→Ω^−e^+v_e)/BR(Ω_c^0→Ω^−π^+) in pp collisions at \sqrt{s} = 13 TeV

Agnello, M.;Balbino, A.;Bufalino, S.;Ciacco, M.;Ferrero, C.;Follo, U.;Gioachin, G.;Politano', S.;
2024

Abstract

The inclusive production of the charm-strange baryon ωc0 is measured for the first time via its semileptonic decay into ω-e+νe at midrapidity (|y|<0.8) in proton-proton (pp) collisions at the center-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2<12 GeV/c. The branching-fraction ratio BR(ωc0->ω-e+νe)/BR(ωc0->ω-π+) is measured to be 1.12+-0.22 (stat) +-0.27 (syst). Comparisons with other experimental measurements, as well as with theoretical calculations, are presented.
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Descrizione: Measurement of Ω^0_{\rm c} baryon production and branching-fraction ratio {\rm BR(Ω^0_c \rightarrow Ω^- e^+ν_e)} / {\rm BR(Ω^0_c \rightarrow Ω^- π^+)} in pp collisions at \sqrt{s} = 13 TeV
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/3000889