Numerical study of MRW-type unintegrated DPDFs constructed from GS09 non-factorized collinear DPDFs via double DGLAP evolution, comparing DMKMRW, DVO-MRW and matched variants.
Double parton interactions in photon+3 jet events in ppbar collisions sqrt{s}=1.96 TeV
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abstract
We have used a sample of photon+3 jets events collected by the D0 experiment with an integrated luminosity of about 1 fb^-1 to determine the fraction of events with double parton scattering (f_DP) in a single ppbar collision at sqrt{s}=1.96 TeV. The DP fraction and effective cross section (sigma_eff), a process-independent scale parameter related to the parton density inside the nucleon, are measured in three intervals of the second (ordered in pT) jet transverse momentum pT_jet2 within the range 15 < pT_jet2 < 30 GeV. In this range, f_DP varies between 0.23 < f_DP < 0.47, while sigma_eff has the average value sigma_eff_ave = 16.4 +- 0.3(stat) +- 2.3(syst) mb.
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UNVERDICTED 2representative citing papers
Derives photon-energy dependent DPS effective cross section for c c-bar b b-bar production in AA UPCs and provides LHC/FCC predictions plus A dependence.
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Numerical Study of MRW-Type Unintegrated Double Parton Distribution Functions from Non-Factorized DPDFs
Numerical study of MRW-type unintegrated DPDFs constructed from GS09 non-factorized collinear DPDFs via double DGLAP evolution, comparing DMKMRW, DVO-MRW and matched variants.
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DPS mechanism for associated $c\bar c b\bar b$ production in $AA$ UPCs
Derives photon-energy dependent DPS effective cross section for c c-bar b b-bar production in AA UPCs and provides LHC/FCC predictions plus A dependence.