electron-positron pairs
Dense GeV electron–positron pairs generated by lasers in near-critical-density plasmas
... of electron–positron pairs and of g-photons can be done in a single-laser-shot 12,23 , that is, there is no need to accumulate many shots as is typical in particle and nuclear physics ...
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Electron-positron pairs in hot plasma of accretion column in bright X-ray pulsars
... of pairs becomes comparable to the number density of protons at temperatures of about a few tens of keV already (see ...The electron-positron pairs affect the gas pressure, which becomes ...
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Search for heavy particles decaying into electron-positron pairs in p-pbar collisions
... distinction can be made between electrons and positrons, because the tracking detectors are not in a magnetic field. The data sample, background predictions, event selec- tion, and electron identification criteria ...
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Measurements of the electron-positron continuum in ALICE
... of electron-positron pairs and an in-medium modi¿cation of the ρ ...via electron-positron pairs at small invariant masses, which originate from virtual ...
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Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma
... the electron-positron pairs may be created by collisions between particles that are accelerated by electromagnetic and electrostatic waves and/or by gravitational ...of ...
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An Electron Model Consistent with Electron Positron Pair Production from High Energy Photons
... when electron-positron pairs first formed from bosons after the Big Bang (only bosons could overlap enough to occupy the initial state), there must have been an equal number of electrons and ...
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Pair production by a strong wakefield excited by intense neutrino bursts in plasmas
... can produce electron–positron pairs by scattering in the Coulomb potential of a nucleus. Several authors [21,22] presented a preliminary discussion of the pair production by relativistic electrons ...
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Study and optimisation of undulator-based polarised positron sources for linear colliders
... conventional positron source is based on the use of high energy electrons striking a high Z material target to generate electromagnetic cascade showers (thick target) or pairs of electron and ...
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Thermal photons at PHENIX experiment
... to electron-positron pairs at the HBD in the PHENIX detector system, and the fraction of direct photons is determined after tagging photons from neutral pion ...
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The APEX experiment at JLab. Searching for the vector boson A′ decaying to e+e−
... an electron- positron pair; electron-positron pairs will be detected in the twin High Resolution Spectrometers positioned at small angles relative to the Hall A incident electron ...
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Direct, Resonant Production of States with Positive Charge Conjugation in Electron-Positron Annihilation
... at electron-positron colliders from the ...into electron-positron pairs and thus — in the framework of the nonrela- tivistic quark model — proportional to the square of the wave ...
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The Mechanics of Electron-Positron Pair Creation in the 3-Spaces Model
... an electron-positron pair as a photon of energy ...case, electron/positron pairs were created without any atom's nuclei being close ...into electron-positron pairs ...
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Light vector mesons and the dielectron continuum in PHENIX
... is used instead. Additionally, meson-to-pion ratios are adjusted to reflect the suppression measured in heavy ion collisions and the J/ψ and ψ’ line shapes are altered to include radiative tails. The PHENIX cocktail ...
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Electrostatic Rayleigh Taylor Mode in Electron Positron Ion Quantum Plasma
... the electron-hole plasma in quantum wires [8], metallic nanostructures and thin films [9], the dense quantum diode [10], nanophotonics and nanowires [11], nano-plasmonics [12], high-gain quan- tum ...
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Cloud chamber measurement of electron pairs for determination of synchrotron spectrum
... The x-ray spectrum of the Iowa State College synchrotron operating at 65 Mev. has been measured. The method consisted of the observation, in a magnetic cloud chamber, of the momentum of each member of electron ...
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Role of the Reference Frame in Angular Photon Distribution at Electron Positron Annihilation
... This reference frame as a whole is equivalent to the reference frame connected with PET. Therefore we shall name this reference frame ―laboratory. The electrons in the object researched in PET basically are in the bound ...
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Critical analysis of recent results on electron and positron elastic scattering on proton
... elastic electron-deuteron scattering at Je ff erson Laboratory (JLab) [13, 14] ...and electron scattering angles, were not increasing with Q 2 , pointing instead to a systematic shift of the hall C ...
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General features of experiments on the dynamics of laser driven electron–positron beams
... the electron gyroradius be smaller than the typical scale of the magnetic ...the electron gyroradius in the background plasma can be expressed as: r g = m e v th /eB, where v th ...
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Recyclable Microencapsulated Osmium Tetroxide Catalyst174
... the electron mass in energy units). Positron decay is always associated with orbital electron capture ...Orbital electron capture. The nucleus captures an extranuclear (orbital) ...
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