J/ψ pair production at the Tevatron with s=1.96 TeV

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QIAO Cong-Feng and SUN Li-Ping. J/ψ pair production at the Tevatron with s=1.96 TeV[J]. Chinese Physics C, 2013, 37(3): 033105. doi: 10.1088/1674-1137/37/3/033105
QIAO Cong-Feng and SUN Li-Ping. J/ψ pair production at the Tevatron with s=1.96 TeV[J]. Chinese Physics C, 2013, 37(3): 033105.  doi: 10.1088/1674-1137/37/3/033105 shu
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Received: 2012-05-31
Revised: 2012-06-07
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J/ψ pair production at the Tevatron with s=1.96 TeV

Abstract: We study the m J/ψ pair production issue at the Fermilab Tevatron Run II with a center-of-mass energy of √s=1.96 TeV. Both the color-singlet and color-octet production mechanisms are considered. Our results show that the transverse momentum (pT) scaling behaviors of the double m J/ψ differential cross-sections in the color-singlets and color-octets deviate distinctively from each other while pT is larger than 8 GeV, and with a luminosity of 5 fb-1, the m J/ψ pair events from the color-singlet scheme are substantially measurable in the Tevatron experiments, even with a certain lower transverse momentum cut. Hence the Tevatron is still a possible platform to check the heavy quarkonium production mechanism.

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