نتایج جستجو برای: cross section area
تعداد نتایج: 1150426 فیلتر نتایج به سال:
The astrophysical S-factor for the reaction Be(p,γ)B up to an energy of 2 MeV (c.m.) and the capture cross section of Li(n,γ)Li up to 1 MeV (c.m.) are calculated using the Direct Capture model (DC). Both calculations are in good agreement with experimental data.
In multiscale and topcolor–assisted models of walking technicolor, light, spin–one technihadrons can exist with masses of a few hundred GeV; they are expected to decay as ρ T → W π T. For M ρ T ≃ 200 GeV and M π T ≃ 100 GeV, the process p¯ p → ρ T → W π T has a cross section of about a picobarn at the Tevatron. We demonstrate the detectability of this process with simulations appropriate to Run...
Searches for standard model Higgs boson production in p¯ p collisions at √ s = 1.96 TeV have been carried out for Higgs boson masses (mH) in the range 105 < mH < 200 GeV/c 2. Analyses are conducted with integrated luminosities from 1.0 fb −1 to 2.3 fb −1. As no significant excess is observed, we proceed to set limits on standard model Higgs boson production. The observed 95% confidence level up...
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.
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