Results 31 to 40 of about 4,848 (208)

Atomic ionization at annihilation of positrons emitted at β+-decay [PDF]

open access: yesЯдерна фізика та енергетика, 2011
Atomic ionization at annihilation of positron with another electron of daughter's atom at +-decay is studied. Processes of the different atomic shells ionization at annihilation of positron, emitted at +-decay, with K-electron of daughter's atom are ...
S. N. Fedotkin
doaj  

Electronic correlations in vanadium revealed by electron-positron annihilation measurements [PDF]

open access: yes, 2016
The electronic structure of vanadium measured by Angular Correlation of electron-positron Annihilation Radiation (ACAR) is compared with the predictions of the combined Density Functional and Dynamical Mean-Field Theory (DMFT).
J. Weber   +8 more
semanticscholar   +1 more source

Positron Spectroscopy of Nanodiamonds after Hydrogen Sorption

open access: yesNanomaterials, 2018
The structure and defects of nanodiamonds influence the hydrogen sorption capacity. Positronium can be used as a sensor for detecting places with the most efficient capture of hydrogen atoms.
Lyudmila Nikitina   +4 more
doaj   +1 more source

$P$-wave coupled channel effects in electron-positron annihilation [PDF]

open access: yes, 2016
P-wave coupled channel effects arising from the DD¯, DD¯*+c.c., and D*D¯* thresholds in e+e- annihilations are systematically studied. We provide an exploratory study by solving the Lippmann-Schwinger equation with short-ranged contact potentials ...
Meng-Lin Du, U. Meissner, Qian Wang
semanticscholar   +1 more source

Generalized threshold resummation in inclusive DIS and semi-inclusive electron-positron annihilation [PDF]

open access: yes, 2015
A bstractWe present analytic all-order results for the highest three threshold logarithms of the space-like and time-like off-diagonal splitting functions and the corresponding coefficient functions for inclusive deep-inelastic scattering (DIS) and semi ...
A. A. Almasy, N. L. Presti, A. Vogt
semanticscholar   +1 more source

Next-to-leading-order results for five, six, and seven jets in electron-positron annihilation. [PDF]

open access: yesPhysical Review Letters, 2011
We present next-to-leading order corrections in the leading color approximation for jet rates in electron-positron annihilation up to seven jets. The results for the two-, three-, and four-jet rates agree with known results.
S. Becker   +4 more
semanticscholar   +1 more source

State-selective high-energy excitation of nuclei by resonant positron annihilation

open access: yesPhysics Letters B, 2015
In the annihilation of a positron with a bound atomic electron, the virtual γ photon created may excite the atomic nucleus. We put forward this effect as a spectroscopic tool for an energy-selective excitation of nuclear transitions.
Nikolay A. Belov, Zoltán Harman
doaj   +1 more source

Factorization of the dijet cross section in electron-positron annihilation with jet algorithms [PDF]

open access: yes, 2015
We analyze the effects of jet algorithms on each factorized part of the dijet cross sections in $e^+ e^-$ scattering using the soft-collinear effective theory. The jet function and the soft function with a cone-type jet algorithm and the Sterman-Weinberg
J. Chay, Chul Kim, Inchol Kim
semanticscholar   +1 more source

Experimental protocol for testing the mass–energy–information equivalence principle

open access: yesAIP Advances, 2022
The mass–energy–information equivalence principle proposed in 2019 and the information content of the observable matter in the universe estimated in 2021 represent two important conjectures, called the information conjectures.
Melvin M. Vopson
doaj   +1 more source

Simulation of electron-positron annihilation into hadrons with the event generator PHOKHARA [PDF]

open access: yes, 2013
A bstractThe precise determination of the cross section for electron-positron annihilation into hadrons is one of the central tasks of ongoing experiments at low energy colliders. These measurements have to be complemented by Monte Carlo generators which
H. Czyz, M. Gunia, J. Kühn
semanticscholar   +1 more source

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