Results 1 to 10 of about 3,908 (165)
The effect of the nuclear Coulomb field on atomic ionization at positron-electron annihilation in β+- decay [PDF]
EPJ Web of Conferences, 2015 We consider the process of the annihilation of a positron emitted at β+- decay and a K-electron of the daughter atom. A part of energy during this process is passed to another K- electron and it leaves the atom.
Fedotkin Sergey
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Electron-positron annihilation to photons at O(α3) revisited
Nuclear Physics B, 2020 We apply the modern multiloop methods to the calculation of the total cross sections of electron-positron annihilation to 2 and 3 photons exactly in s/m2 with the accuracy O(α3). Examining the asymptotics of our results, we find agreement with Ref.
Roman N. Lee
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Positron-electron annihilation momentum transfer to trapped deuterons [PDF]
AIP Advances, 2019 The probability of positron annihilation momentum transfer to a trapped deuteron is calculated based on neutron measurements from 2H(d,n)3He reactions in deuterated palladium thin films. Deuterium gas loading in Pd thin films creates a high D/Pd fraction
Ryan Weed +4 more
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Anomalous Positron Lifetime in Single Crystal of Weyl Semimetal CoSi
Crystals, 2023 The positron annihilation lifetimes were measured using a 48V positron source in noncentrosymmetric cubic single crystals of CoSi, FeSi and MnSi. The following lifetimes were determined from the positron annihilation time spectra: 168(1) ps for CoSi, 114(
D. A. Salamatin +10 more
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New physics searches at the ILC positron and electron beam dumps
Journal of High Energy Physics, 2021 We study capability of the ILC beam dump experiment to search for new physics, comparing the performance of the electron and positron beam dumps. The dark photon, axion-like particles, and light scalar bosons are considered as new physics scenarios ...
Kento Asai +3 more
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SciPost Physics Proceedings, 2023 Annihilation or decay of dark matter (DM) could contribute to the electron and positron cosmic-ray flux, allowing for constraints on DM parameters from its measurement.
Holger Motz
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Universe, 2020 We investigated the effects that occur during the circulation of ultrarelativistic electrons and positrons in the field of an X-ray pulsar. A resonant process in annihilation and the subsequent production of the electron–positron pairs were studied ...
Dmitriy V. Doroshenko +2 more
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Calculation of Low-Energy Positron-Atom Scattering with Square-Integrable Wavefunctions
Atoms, 2022 The variational method is applied to the low-energy positron scattering and annihilation problem. The ultimate aim of the investigation is to find a computationally economical way of accounting for strong electron–positron correlations, including the ...
Sarah Gregg, Gleb Gribakin
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Hadron pair production in semi-inclusive electron positron annihilation process at twist-4
European Physical Journal C: Particles and Fields, 2022 Fragmentation functions are important quantities in describing the hadronization process in high energy reactions. They can induce various azimuthal modulations which can be measured to reveal correlations between transverse momenta and polarizations ...
Weihua Yang
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Direct Decay of the Z^0 Boson into Ω_bcc and Ω_bbc Baryons [PDF]
فیزیک کاربردی ایرانElectron-positron annihilation experiments are crucial tools for testing the Standard Model due to the simplicity and clarity of the initial state.
tawfigh Osati
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