Bulletin of the American Physical Society
Fall 2022 Meeting of the APS Division of Nuclear Physics
Volume 67, Number 17
Thursday–Sunday, October 27–30, 2022; Time Zone: Central Daylight Time, USA; New Orleans, Louisiana
Session JF: Heavy Flavor in Heavy-ion Collisions
8:30 AM–10:30 AM,
Saturday, October 29, 2022
Hyatt Regency Hotel
Room: Celestin F
Chair: Deepa Thomas, UT Austin
Abstract: JF.00003 : Lambda_c^{+}/D^{0} measurement as a function of multiplicity in pPb collisions at 5.02 TeV
8:54 AM–9:06 AM
Presenter:
Oveis Sheibani
(University of Houston)
Author:
Oveis Sheibani
(University of Houston)
The latest measurements of $\Lambda^+_{\rm c}$ down to $p_{\rm T}=0$, performed with the ALICE detector at midrapidity in pp and p--Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV, are presented. This is the first ALICE measurement, down to $p_{\rm T}$ = 0, of the $\Lambda^+_{\rm c}/{\rm D^0}$ ratio in pp and p--Pb collisions. This result, together with the already published measurement of the cross section for the ${\rm D^0}$, ${\rm D^+}$, ${\rm D^+_{\rm s}}$ and ${\rm \Xi^0_{\rm c}}$ production, allows an evaluation of the total section and fragmentation fractions.
The result unambiguously shows that the charm fragmentation is not universal across leptonic and hadronic collision systems. The $\Lambda^+_{\rm c}/{\rm D^0}$ yield ratios as measured as a function of charged particle multiplicity in pp and p-Pb collisions is also shown and compared to different hadronization models.
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