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A set of inclusive cross sections at zero rapidity is presented for p-pbarinteractions at center of mass energy sqrt(s)=1.8 TeV. Six particle crosssections are corrected for secondary contributions from decays of higher massresonances in order to produce a set of primary cross sections. The primarycross sections per spin state are well described by d(sigma^p)/dy|_(y=0)=0.721*(pi*lambdabar_(pi)^2)*exp(-m/T), where m is the particle rest mass,T=hbar*c/r_h, and r_h=0.97 fm. The deuterium production cross section is alsodescribed if r_h is replaced by r_A=r_h*A^(1/3). The same exponential in m andT describes primary charm fractions in e+e- collisions at least up to the J/Psimass. There is no significant evidence for strangeness or charm suppression ifonly primary production of light hadrons is considered. There is evidence thatthe primary cross section for each particle may have the same value for pp andpbar-p collisions and that it may have nearly constant values betweensqrt(s)=63 GeV and sqrt(s)=1800 GeV. Fits to the final state transverse momentaof the particles using a gas model favor a temperature T=132 MeV, a chemicalpotential mu=129 MeV, and a transverse flow of the gas with beta_f=0.27.

Simple Behavior of Primary Cross Sections for Low Mass Particles in p-pbar Collisions at y=0 and sqrt(s)=1.8 TeV