منابع مشابه
Electron-atom superelastic scattering in magnesium at millielectron volt energies.
The energy dependence of superelastic scattering is measured for electrons on Mg(3(1)P) from threshold to 270 meV with a novel technique. The method uses photoelectrons produced by a narrow bandwidth laser as an approximately monoenergetic incident electron source to collide with excited atoms. Measurements are made at energies as low as 1.5 meV with a resolution of 1 meV near threshold. An eff...
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We give a systematic analysis of forward scattering in 3+1-dimensional quantum gravity, at center of mass energies comparable or larger than the Planck energy. We show that quantum gravitational effects in this kinematical regime are described by means of a topological field theory. We find that the scattering amplitudes display a universal behaviour similar to two dimensional string amplitudes...
متن کاملpnπ REACTION AT MEDIUM ENERGIES
The pp → pnπ reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various N and ∆ resonances with mass up to about 2 GeV for the pp → pnπ reaction. We extend a resonance model, which can reproduce the observed total cross section quite well, to give theoretical predictions of various dif...
متن کاملQuasielastic Scattering at MiniBooNE Energies
We present our description of neutrino induced charged current quasielastic scattering (CCQE) in nuclei at energies relevant for the MiniBooNE experiment. In our framework, the nucleons, with initial momentum distributions according to the Local Fermi Gas model, move in a densityand momentum-dependent mean field potential. The broadening of the outgoing nucleons due to nucleon-nucleon interacti...
متن کاملBhabha Scattering at High Energies
A study of the process, e+e---) e+e-7, where at least one electron scatters at a small angle is presented. Calculations of the process to order o3 and cr4 are reviewed and compared with data from the PEP storage ring. An analysis of data from the Mark II detector shows good agreement with the order cx4 calculation for e7 final states. Preliminary results from the ASP detector agree well with th...
متن کاملNeutrino Scattering at High Energies
The construction of a high energy (∼100 GeV), sign-selected neutrino beam opens exciting opportunities to search for beyond-standard-model physics as well as to make valuable QCDmeasurements. Such a beam can be produced at the Tevatron or, potentially, at the CERN SPS+. The resulting physics would be unique and complementary to the present neutrino program. Here we use neutrino-electron scatter...
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عنوان ژورنال:
پژوهش فیزیک ایرانجلد ۱، شماره ۱، صفحات ۱-۲۷
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