نتایج جستجو برای: section p
تعداد نتایج: 1404636 فیلتر نتایج به سال:
The empirical scaling law, wherein the total photoabsorption cross section depends on the single variable η = (Q 2 + m 2 0)/Λ 2 (W 2), provides empirical evidence for saturation in the sense of σγ * p(W 2 , Q 2)/σγp(W 2) → 1 for W 2 → ∞ at fixed Q 2. The total photoabsorption cross section is related to elastic diffraction in terms of a sum rule. The excess of diffractive production over the el...
This paper reviews a cyclic scheduling model of repetitive manufacturing environments consisting of exible machines and multi-stage jobs. We explicitly model two system performance measures, throughput and ow time, while incorporating variability arising from uncertainty in operation processing times. We present an iterative approximation scheme to estimate the two moment behavior of our perfor...
power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...
We report on a measurement of the Υ(1S+2S+3S) → e + e − cross section at midrapidity in p + p collisions at √ s = 200 GeV. We find the cross section to be 114 ± 38 (stat. + fit) +23 −24 (syst.) pb. Perturbative QCD calculations at next-to-leading order in the Color Evaporation Model are in agreement with our measurement, while calculations in the Color Singlet Model underestimate it by 2σ. Our ...
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