Results 91 to 100 of about 174 (133)
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New fast beam profile monitor for electron-positron colliders
Review of Scientific Instruments, 2007A new fast beam profile monitor has been developed at the Budker Institute of Nuclear Physics. This monitor is based on the Hamamatsu multianode photomultiplier with 16 anode strips and provides turn-by-turn measurement of the transverse beam profile. The device is equipped with an internal memory, which has enough capacity to store 131 072 samples of ...
A V, Bogomyagkov +9 more
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Beam-beam luminosity limitation in electron-positron colliding rings
Physical Review D, 1981To account for observed luminosity limitations in electron-positron colliding rings we identify parametric pumping of vertical betatron oscillations by horizontal oscillations as the leading effect, solve the nonlinear single-particle equation exactly, obtain the strong-beam-strong-beam equilibrium by numerical simulation, calculate the luminosity, and
Stephen Peggs, Richard Talman
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Hadron production by electron-positron colliding beams
Physical Review D, 1974Various considerations and conjectures are made on the surprisingly large total cross section for hadron production which has recently been observed in the ${e}^{+}\ensuremath{-}{e}^{\ensuremath{-}}$ colliding-beam experiment at the Cambridge Electron Accelerator. First, they focus on the relative magnitude of cross sections for one-photon annihilation
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The infra-red radiative corrections for colliding beam (electrons and positrons) experiments
Il Nuovo Cimento B Series 10, 1967The infra-red corrections to be applied to the results expected from an electron positron colliding beam experiment are determined with the help of the Bloch-Nordsieck theorem. Experiments are characterized by a resolution functionϱ(k) of a four-dimensional timelike energy-momentum vector, which represents the probability that a four-momentum lossk ...
E., Etim, G., Pancheri, B., Touschek
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Creation of excited leptons in colliding electron-positron beams
Russian Physics Journal, 1992The generalized model assuming the existence of internal substructures in intermediate (virtual) leptons is used to calculate the differential cross section of the electroweak annihilation of unpolarized, longitudinally polarized and transversely polarized electrons and positrons with the formation of a lepton-antilepton pair and a photon in the final ...
M. Hayashi +2 more
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The Study of Beam-Beam Effects on BINP Electron-Positron Colliders
2019Proceedings of the 10th Int.
Borin, Vladislav +6 more
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Theoretical calculations for electron-positron colliding-beam reactions
Il Nuovo Cimento A, 1967The radiative corrections to a typical colliding-beam reaction are calculated for a given experimental arrangement with given energy and angular resolution. Two experimental arragements are considered in detail: a symmetrical arrangement and an asymmetrical arrangement.
G. Altarelli +4 more
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Baryon resonances from electron-positron colliding beams
Il Nuovo Cimento A Series 10, 1969Electron-positron colliding beam reactions leading to meson resonant states are discussed together with the subsequent chains of decay processes. A compact formalism is developed for predicting the expected angular correlations and tables are given of the expected angular dependences.
E. Celeghini, R. Gatto
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Signal for bottom-baryon production in electron-positron colliding beams
Physical Review D, 1981The expected contribution to the inclusive proton yield in electron-positron annihilation near the bottom-baryon production threshold is estimated. A plausible model for the production of heavy-quark hadronic states, which adequately describes the observed charmed-baryon production, is assumed. Near threshold bottom-baryon production causes a step in R/
S. Fajfer, R. J. Oakes
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Positron-Electron Multicycle Injection at the CEA Colliding Beam Project
IEEE Transactions on Nuclear Science, 1971We have developed a reliable procedure for multicycle filling of the Cambridge Electron Accelerator ring with positrons and electrons. The positron fill rate is determined by the intensity, spectrum, and emittance provided by the 125-MeV positron linac and also by the available phas-space and momentum acceptance aperture of the synchrotron for off-axis
R. J. Averill +7 more
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