نتایج جستجو برای: leaf cross section
تعداد نتایج: 694687 فیلتر نتایج به سال:
In this paper we present the ongoing experiments at ATOMKI related to our systematic γ-process studies. These studies are intended to enlarge the limited experimental database from α-induced reactions on nuclei in the heavier mass range of the γ-process. In all presented cases the activation method was used. The details of the cross section measurements and preliminary results on In(α,n)Sb, In(...
We calculate the cross section of beauty production in ep deep inelastic scattering at HERA collider in the framework of the k T-factorization approach. The unintegrated gluon distributions in a proton are obtained from the full CCFM, from unified BFKL-DGLAP evolution equations as well as from the Kimber-Martin-Ryskin prescription. We investigate different production rates and study the b-quark...
Theoretical results for the cross section of heavy quark production near the threshold at NNLO of NRQCD are briefly overviewed.
We present the results of a search for associated production of the lightest chargino and next-to-lightest neutralino using 1 fb of √ s = 1.96 TeV pp̄ data collected with the CDF detector at the Tevatron. We combine the results of several multi-lepton final states to set upper limits on the cross section times branching ratio for chargino-neutralino production as a function of the chargino mass.
Uncertainties in the NLO calculation of the inclusive jet cross section due to the choice of renormalization scale and parton distribution functions are explored. These are found to be similar to the size of the experimental uncertainties of the measured cross section.
Abstract: We discuss the resummation of threshold logarithms for heavy quark and dijet cross sections in hadronic collisions. The resummed cross sections are presented at next-to-leading logarithmic accuracy in terms of anomalous dimension matrices which describe the factorization of soft gluons from the hard scattering. We apply our formalism to the calculation of the top quark production cros...
Results for higher-order threshold enhancements in high-E T jet production in hadron-hadron collisions are presented. Expressions are given for the next-to-next-to-leading order (NNLO) threshold corrections to the single-jet inclusive cross section at next-to-leading logarithmic (NLL) accuracy. The corrections are found to be small for the specific choice of E T /2 for the factorization and ren...
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