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Production of $$J/\psi$$ from Chi($$c$$) decays at CDF

Conference ·
OSTI ID:102421
We have measured the fraction of J/{psi} originating from {chi}{sub c} states in p{bar p} collisions at {radical}s = 1.8 TeV in four bins of J/{psi} P{sub T}. The fraction in the inclusive CDF J/{psi} sample with P{sub T}{sup J/{psi}} > 4.0 GeV/c and {vert_bar}{eta}{sup J/{psi}}{vert_bar} < 0.6 is f{sub x}{sup J/{psi}} = 28.3{+-}1.6(stat){+-}6.8(syst)%. The fraction of J/{psi} from {chi}{sub c} not including contributions from B{yields}J/{psi}. X and B {yields} {chi}{sub c} X is f(Nob){chi}{sup J/{psi}} = 32.3{+-}2.0(stat){+-}8.5(syst)%. We have also found that directly produced {chi}{sub c}`s are produced in the ratio = {sigma}({chi}{sub c2}) over {sigma}({chi}{sub cl}) + {sigma}({chi}{sub c2})= 0.47{+-}0.08(stat){+-}0.02(syst.)
Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
CDF
DOE Contract Number:
AC02-07CH11359
OSTI ID:
102421
Report Number(s):
FERMILAB-CONF-95-226-E; CDF-PUB-BOTTOM-PUBLIC-3239; oai:inspirehep.net:399806
Country of Publication:
United States
Language:
English