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Title: Event engineering studies for heavy flavor production and hadronization in high multiplicity hadron-hadron and hadron-nucleus collisions

Journal Article · · Physical Review D

Heavy flavor measurements in high multiplicity proton-proton and proton-nucleus collisions at collider energies enable unique insights into their production and hadronization mechanism because experimental and theoretical uncertainties cancel in ratios of their cross sections relative to minimum bias events. We explore such event engineering using the color glass condensate (CGC) effective field theory to compute short-distance charmonium cross sections. The CGC is combined with heavy-quark fragmentation functions to compute D-meson cross sections; for the J/ψ, hadronization is described employing nonrelativistic QCD (NRQCD) and an improved color evaporation model. Excellent agreement is found between the CGC computations and the LHC heavy flavor data in high multiplicity events. In conclusion, event engineering in this CGC þ NRQCD framework reveals a very rapid growth in the fragmentation of the 3S[8]1 state in rare events relative to minimum bias events.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC05-06OR23177; FG02-97ER41028; SC0012704; SFB 1225
OSTI ID:
1479175
Alternate ID(s):
OSTI ID: 1478501; OSTI ID: 1479276
Report Number(s):
BNL-209200-2018-JAAM; JLAB-THY-18-2676; DOE/OR/23177-4395; arXiv:1803.11093; PRVDAQ; 074025
Journal Information:
Physical Review D, Journal Name: Physical Review D Vol. 98 Journal Issue: 7; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

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