High $p_{T} \psi \psi$ production as strong signals for double parton scattering at the Tevatron

We present an analysis of the \psi\psi production from double parton (DP) sacttering and single parton (SP) scattering in the large p_T region via color-octet gluon fragmentation. We find that at the Tevatron the DP \psi\psi production is at the edge of the detectability at present, and at the LHC the DP cross section will dominate over the SP cross section in the lower p_T(min) region (i.e., p_T(min)<7GeV). We also conclude that the color-octet mechanism is of crucial importance to the double j/psi production at high energy hadron colliders.

Note:

Revtex, 12 pages, 3 Postscript figures Report-no: PKU-TP-97-10(E)

anti-p p: annihilation
p p: inclusive reaction
psi mesons: pair production
J/psi(3100)
psi(3685)
multiple scattering: parton
gluon: fragmentation
color: octet
Feynman graph
transverse momentum: high

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High pTψψp_{T} \psi \psipT​ψψ production as strong signals for double parton scattering at the Tevatron

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High $p_{T} \psi \psi$ production as strong signals for double parton scattering at the Tevatron