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    Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at ‚ąös = 7 TeV and first determination of the strong coupling constant in the TeV range

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    A measurement is presented of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section as a function of the average transverse momentum, ‚ü®p[subscript T1,2]‚ü©, of the two leading jets in the event. The data sample was collected during 2011 at a proton‚Äďproton centre-of-mass energy of 7 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 5.0 fb[subscript ‚ąí1]. The strong coupling constant at the scale of the Z boson mass is determined to be őĪ[subscript S](M[subscript Z])=0.1148¬Ī0.0014 (exp.)¬Ī0.0018 (PDF)¬Ī0.0050(theory), by comparing the ratio in the range 0.42<‚ü®p[subscript T1,2]‚ü©<1.39 TeV to the predictions of perturbative QCD at next-to-leading order. This is the first determination of őĪ[subscript S](M[subscript Z]) from measurements at momentum scales beyond 0.6 TeV. The predicted ratio depends only indirectly on the evolution of the parton distribution functions of the proton such that this measurement also serves as a test of the evolution of the strong coupling constant. No deviation from the expected behaviour is observed.United States. Department of EnergyNational Science Foundation (U.S.

    Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

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    This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good

    Juxtaposing BTE and ATE ‚Äď on the role of the European insurance industry in funding civil litigation