Constraining Hadronization Mechanisms with Λc+/D0 Production Ratios in Pb–Pb Collisions at sNN = 5.02 TeV

Acharya S.; Adamova D.; Adler A.; Adolfsson J.; Aglieri Rinella G.; Agnello M.; Agrawal N.; Ahammed Z.; Ahmad S.; Ahn S.U.; Ahuja I.; Akbar Z.; Akindinov A.; Al-Turany M.; Alam S.N.; Aleksandrov D.; Alessandro B.; Alfanda H.M.; Alfaro Molina R.; Ali B.

doi:10.1016/j.physletb.2023.137796

Publicación

Constraining Hadronization Mechanisms with Λc+/D0 Production Ratios in Pb–Pb Collisions at sNN = 5.02 TeV

Acharya S. · Adamova D. · Adler A. · Adolfsson J. · Aglieri Rinella G. · Agnello M. · Agrawal N. · Ahammed Z. · Ahmad S. · Ahn S.U.

2023 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics DOI: 10.1016/j.physletb.2023.137796 1 vistas

Resumen

The production of prompt Λc+ baryons at midrapidity (|y|<0.5) was measured in central (0–10%) and mid-central (30–50%) Pb–Pb collisions at the center-of-mass energy per nucleon–nucleon pair sNN=5.02 TeV with the ALICE detector. The results are more precise, more differential in centrality, and reach much lower transverse momentum (pT=1 GeV/c) with respect to previous measurements performed by the ALICE, STAR, and CMS Collaborations in nucleus–nucleus collisions, allowing for an extrapolation down to pT=0. The pT-differential Λc+/D0 ratio is enhanced with respect to the pp measurement for 4<pT<8 GeV/c by 3.7 standard deviations (σ), while the pT-integrated ratios are compatible within 1σ. The observed trend is similar to that observed in the strange sector for the Λ/KS0 ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.

Autores y colaboradores

Authors

Acharya S.

Adamova D.

Adler A.

Adolfsson J.

Aglieri Rinella G.

Agnello M.

Agrawal N.

Ahammed Z.

Ahmad S.

Ahn S.U.

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