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The dependence of the differential cross section and polarization observables in the $\bar N+N\to \pi +e^++e^-$ reaction on the polarizations of the proton target and antiproton beam (the produced electron may be unpolarized or…

Nuclear Theory · Physics 2015-06-05 G. I. Gakh , E. Tomasi-Gustafsson , A. Dbeyssi , A. G. Gakh

We study the ionization process involving antiproton and hydrogen in the energy range between 0.1 keV to 500 keV, using single center close coupling approximation. We construct the scattering wave function using B-spline bases. The results…

Atomic Physics · Physics 2007-05-23 S Sahoo , S C Mukherjee , H R J Walters

We apply the differential equation method to the calculation of the total Born cross section of the process $Z_1Z_2\to Z_1Z_2e^+e^-$. We obtain explicit expression for the cross section exact in the relative velocity of the nuclei.

High Energy Physics - Phenomenology · Physics 2016-05-04 Roman N. Lee , Kirill T. Mingulov

We study coherent diffractive dijet production in electron-hadron and electron-nucleus collisions within the dipole picture. We provide semi-analytic results for the differential cross section and elliptic anisotropy in the angle between…

High Energy Physics - Phenomenology · Physics 2020-02-10 Farid Salazar , Bjoern Schenke

We present a new theoretical approach to neutrino-impact atomic excitation and/or ionization due to neutrino magnetic moments. The differential cross section of the process is given by a sum of the longitudinal and transverse terms, which…

High Energy Physics - Phenomenology · Physics 2011-08-16 Konstantin A. Kouzakov , Alexander I. Studenikin

We introduce a data analysis procedure for color transparency experiments which is considerably less model dependent than the transparency ratio method. The new method is based on fitting the shape of the A dependence of the nuclear cross…

High Energy Physics - Phenomenology · Physics 2007-05-23 Pankaj Jain , John P. Ralston

The production of various heavy-quark-containing baryons in electron-positron annihilation is considered. On the basis of exact formulas that we obtained previously within full perturbation theory, new numerical calculations of the…

High Energy Physics - Phenomenology · Physics 2015-06-25 S. P. Baranov , V. L. Slad

A measurement of the inclusive jet production in proton-proton collisions at the LHC at $\sqrt{s}$ = 13 TeV is presented. The double-differential cross sections are measured as a function of the jet transverse momentum $p_\mathrm{T}$ and…

High Energy Physics - Experiment · Physics 2023-10-09 CMS Collaboration

Joint electron-ion energy spectra for the dissociative ionization of a model H$_2^+$ in few-cycle, infrared laser pulses are calculated via the numerical ab initio solution of the time-dependent Schr\"odinger equation. A strong,…

Atomic Physics · Physics 2017-11-21 V. Mosert , D. Bauer

A general expression for the double differential cross section of fluorescence radiation following photorecombination (PRF) of polarized electrons and polarized ions is derived by using usual atomic theory methods and is represented in the…

Atomic Physics · Physics 2009-11-11 A. Kupliauskiene

The experimental data from the RHIC and LHC experiments of invariant pT spectra in A+A and p + p collisions are analysed with Tsallis distributions in different approaches. The information about the freeze-out surface in terms of freeze-out…

High Energy Physics - Phenomenology · Physics 2016-11-22 Dhananjaya Thakur , Sushanta Tripathy , Prakhar Garg , Raghunath Sahoo , Jean Cleymans

Electron scattering cross section, as well as proton scattering cross section, observes the point-proton and the point-neutron distributions, but both cross sections are not able to determine them separately. If they are analyzed…

Nuclear Theory · Physics 2024-12-30 Toshio Suzuki , Rika Danjo , Toshimi Suda , Masayuki Matsuzaki , Tomotsugu Wakasa

For autonomous systems it is well known how to extract tunneling probabilities from wavepacket calculations. Here we present a corresponding approach for periodically time-dependent Hamiltonians, valid at all frequencies, field strengths,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Frank Grossmann

In charged nanopores, ionic diffusion current reflects the ionic selectivity and ionic permeability of nanopores which determines the performance of osmotic energy conversion, i.e. the output power and efficiency. Here, theoretical…

Chemical Physics · Physics 2023-09-15 Long Ma , Zihao Gao , Jia Man , Jianyong Li , Guanghua Du , Yinghua Qiu

The optical reflection coefficient of a dielectric medium moving uniformly in the plane spanned by its surface is rigorously calculated using classical electrodynamics and special relativity, and expressed in the Fourier domain, as a…

The differential cross section for proton-proton elastic scattering has been measured at a beam energy of 1.0 GeV and in 200 MeV steps from 1.6 to 2.8 GeV for centre-of-mass angles in the range from 12-16 degrees to 25-30 degrees, depending…

We present quantum-mechanical theory of impact ionization in semiconductors with the direct band gap in \$\Gamma\$-point. It is shown that energy dependence of the impact ionization rate \$\mathcal{W}(E)\$ near a threshold \$E_{th}\$ is…

Mesoscale and Nanoscale Physics · Physics 2017-08-02 A. N. Afanasiev , A. A. Greshnov , G . G. Zegrya

Various differential cross sections of high-energy photon splitting in the electric fields of heavy atoms are calculated exactly in the parameter \al. The consideration is based on the quasiclassical approach applicable for small angles…

High Energy Physics - Phenomenology · Physics 2008-11-26 R. N. Lee , A. I. Milstein , V. M. Strakhovenko

Electron Capture (EC) cross-section from K, L and M shells of the target atoms to the vacant K, L and M shells of the projectile ions have been calculated by deriving the accurate momentum transfer to the captured electrons for different…

Atomic Physics · Physics 2024-07-03 Sumana Ghosh , Debasis Mitra , Soumya Chatterjee

The differential cross sections for low-energy muonic hydrogen atom scattering from hydrogenic molecules are directly expressed by the corresponding amplitudes for muonic atom scattering from hydrogen-isotope nuclei. The energy and angular…

Atomic Physics · Physics 2018-03-09 Andrzej Adamczak