Joint resummation for heavy quark production(4)

We present the joint threshold and recoil resummed transverse momentum distributions for heavy quark hadroproduction, at next-to-leading logarithmic accuracy. We exhibit their dependence on the production channel and the color configurations, and compare t

4Ban ,Laenen

Fig.1.

TopquarkpTspectraandK-factorsfortheqq¯channel.

overNLOatpT=800GeV.Jointresummationalmostdoublesthate ect:the

joint-resummedenhancementatlargepTe ectivelyconstitutesasmearingofthethreshold-resummedpTspectrumbyaresummedrecoilfunction.Acknowledgments

ThisworkwassupportedbytheNetherlandsFoundationforFundamentalResearchofMatter(FOM)andtheNationalOrganizationforScienti cResearch(NWO).References

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