【摘 要】
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We apply an equal-velocity quark combination model to study the production of light-flavor hadrons and single-charmed hadrons at midrapidity in the pp collisions at √s=5.02 TeV.We find that the experimental data for the pT spectra of Ω and φ exhibit the q
【机 构】
：
School of Physical Science and Intelligent Engineering,Jining University,Shandong 273155,China;Schoo
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We apply an equal-velocity quark combination model to study the production of light-flavor hadrons and single-charmed hadrons at midrapidity in the pp collisions at √s=5.02 TeV.We find that the experimental data for the pT spectra of Ω and φ exhibit the quark number scaling property,which clearly indicates the quark combination mechanism at hadronization.Experimental data for the pT spectra of p,Λ,Ξ,Ω,φ,and K*0 are systematically de-scribed by the model.The non-monotonic pT dependence of the Ω/φ ratio is naturally explained,and we find that it is closely related to the shape of the logarithm of the strange quark pT distribution.Using the pT spectra of light-fla-vor quarks obtained from light-flavor hadrons and the pT spectrum of charm quarks,which is consistent with per-turbative QCD calculations,the experimental data for differential cross-sections of D0,+,D+s,and Λc+as functions of pT are systematically described.We predict the differential cross-sections of Ξ0,+c and Ωc0.The ratio Ξc0,+/D0 in our model is approximately 0.16,and Ωc0/D0 is approximately 0.012,owing to the cascade suppression of strangeness.In addition,the predicted Ξc0,+/D0 and Ωc0/D0 ratios exhibit the non-monotonic dependence on pT in the low pT range.
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