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Träfflista för sökning "WFRF:(Savin D. W.) srt2:(2008-2009)"

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1.	Aaron, F. D., et al. (author) Multi-leptons with high transverse momentum at HERA 2009 In: Journal of High Energy Physics. - : Springer Science and Business Media LLC. - 1029-8479. ; :10 Journal article (peer-reviewed)abstract Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb(-1). The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e(+)p collision data with a scalar sum of the lepton transverse momenta above 100 GeV while 1.94 +/- 0.17 events are expected. Such events are not observed in e(-)p collisions for which 1.19 +/- 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.
2.	Fogle, M., et al. (author) Electron-impact ionization of Be-like CIII, NIV, and OV 2008 In: Astrophysical Journal Supplement Series. - : American Astronomical Society. - 0067-0049 .- 1538-4365. ; 175:2, s. 543-556 Journal article (peer-reviewed)abstract We present recent measurements of absolute electron-impact ionization cross sections for Be-like C III, N IV, and O V forming Li- like C IV, N V, and O VI. The measurements were taken using the crossed-beams apparatus at Oak Ridge National Laboratory. A gas cell beam attenuation method was used to independently measure the metastable fractions present in the ion beams. The measured ionization cross sections were compared with calculations using the R-matrix with pseudostates and distorted-wave theoretical methods. Best agreement is found with the R-matrix with pseudostates cross sections results that account for the metastable fractions inferred from the gas attenuation measurements. We present a set of recommended rate coefficients for electron-impact single ionization from the ground state and metastable term of each ion.

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Abramowicz, H. (1); Antonov, A. (1); Barreiro, F. (1); Bellagamba, L. (1); Bindi, M. (1); Bold, T. (1); show more...; Boscherini, D. (1); Bracinik, J. (1); Brandt, G. (1); Brock, I. (1); Bruncko, D. (1); Bruni, A. (1); Bruni, G. (1); Butterworth, J. M. (1); Capua, M. (1); Cerny, K. (1); Chekanov, S. (1); Cooper-Sarkar, A. M. (1); Corradi, M. (1); Corriveau, F. (1); Del Peso, J. (1); Dolgoshein, B. A. (1); Doyle, A. T. (1); Ferrando, J. (1); Gladilin, L. K. (1); Glasman, C. (1); Glazov, A. (1); Grabowska-Bold, I. (1); Gwenlan, C. (1); Henderson, R. C. W. (1); Hoffmann, D. (1); Iacobucci, G. (1); Ishitsuka, M. (1); Katzy, J. (1); Kisielewska, D. (1); Klein, M. (1); Klein, U. (1); Koffeman, E. (1); Kretzschmar, J. (1); Kuze, M. (1); Landon, M. P. J. (1); Laycock, P. (1); Lisovyi, M. (1); Lobodzinska, E. (1); Mastroberardino, A. (1); Maxfield, S. J. (1); Mehta, A. (1); Meyer, J. (1); Morris, J. D. (1); Mueller, K. (1); show less...

University: Stockholm University (1); Lund University (1)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (2)

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