First Measurement of Baryon Production in Collisions at
Journal Article
·
· Physical Review Letters
Herein we report on the first measurement of the charmed baryon production at midrapidity ( ) in collisions at collected by the STAR experiment at the Relativistic Heavy Ion Collider. The [denoting ] yield ratio is measured to be in the 0%–20% most central collisions for the transverse momentum ( ) range . This is significantly larger than the pythia model calculations for collisions. The measured ratio, as a function of and collision centrality, is comparable to the baryon-to-meson ratios for light and strange hadrons in collisions. Model calculations including coalescence hadronization for charmed baryon and meson formation reproduce the features of our measured ratio.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Univ. of Illinois, Chicago, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Texas A & M Univ., College Station, TX (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
- Contributing Organization:
- STAR Collaboration
- Grant/Contract Number:
- SC0012704; FG02-94ER40865; AC02-05CH11231; SC0015636
- OSTI ID:
- 1573479
- Alternate ID(s):
- OSTI ID: 1631659; OSTI ID: 1782831; OSTI ID: 1669347; OSTI ID: 1787656
- Report Number(s):
- BNL--212305-2019-JAAM; BNL--213777-2020-JAAM
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 124; ISSN 0031-9007; ISSN PRLTAO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Jets & heavy flavor physics
Particle & resonance production
Photon
lepton & quark production
Quark-gluon plasma
Relativistic heavy-ion collisions
Strong interaction
Lambda/c+: production
yield: ratio: measured
heavy ion: scattering
charmed baryon
transverse momentum
hadronization
coalescence
enhancement
formation
PYTHIA
STAR
experimental results
13000 GeV-cms/nucleon
Jets & heavy flavor physics
Particle & resonance production
Photon
lepton & quark production
Quark-gluon plasma
Relativistic heavy-ion collisions
Strong interaction
Lambda/c+: production
yield: ratio: measured
heavy ion: scattering
charmed baryon
transverse momentum
hadronization
coalescence
enhancement
formation
PYTHIA
STAR
experimental results
13000 GeV-cms/nucleon