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Träfflista för sökning "WFRF:(Kjaer M.) ;pers:(Baubillier M.);pers:(Asman B.);srt2:(2003)"

Sökning: WFRF:(Kjaer M.) > Baubillier M. > Asman B. > (2003)

  • Resultat 11-13 av 13
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11.
  • Abdallah, J, et al. (författare)
  • Measurement of inclusive f(1) (1285) and f(1) (1420) production in Z decays with the DELPHI detector
  • 2003
  • Ingår i: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 569:3-4, s. 129-139
  • Tidskriftsartikel (refereegranskat)abstract
    • DELPHI results are presented on the inclusive production of two (K(K) over bar π)(0) states in the mass region 1.2-1.6 GeV/c(2) in hadronic Z decays at LEP I. The measured masses (widths) are 1274 +/- 6 MeV/c(2) (29 +/- 12 MeV/c(2)) and 1426 +/- 6 MeV/c(2) (51 +/- 14 MeV/c(2)), respectively. A partial-wave analysis of the (K(K) over bar π)(0) system shows that the first peak is consistent with the I-G (J(PC)) = 0(+)(1(++))/(0(-+))a(0)(980)pi and the second with the I-G (J(PC)) = 0(+)(1(++))K*(892)(K) over bar + c.c. assignments. The total hadronic production rates per hadronic Z decay are (0.165 +/- 0.051) and (0.056 +/- 0.012), respectively. These measurements are consistent with the two states being the f(1) (1285) and f(1) (1420) mesons. (C) 2003 Published by Elsevier B.V.
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12.
  • Abdallah, J, et al. (författare)
  • Search for resonant (nu)over-tilde production at root s=183 to 208 GeV
  • 2003
  • Ingår i: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 28:1, s. 15-26
  • Tidskriftsartikel (refereegranskat)abstract
    • Searches for resonant (ν) over tilde production in e(+)e(-) collisions under the assumption that R-parity is not conserved and that the dominant R-parity violating coupling is lambda(121) or lambda(131) used data recorded by DELPHI in 1997 to 2000 at centre-of-mass energies of 183 to 208 GeV. No deviation from the Standard Model was observed. Upper limits are given for the lambda(121) and lambda(131) couplings as a function of the sneutrino mass and total width. The limits are especially stringent for sneutrino masses equal to the centre-of-mass energies with the highest integrated luminosities recorded.
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13.
  • Abdallah, J, et al. (författare)
  • Study of inclusive J/psi production in two-photon collisions at LEP II with the DELPHI detector
  • 2003
  • Ingår i: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - 0370-2693. ; 565:1-4, s. 76-86
  • Tidskriftsartikel (refereegranskat)abstract
    • Inclusive J/psi production in photon-photon collisions has been observed at LEP II beam energies. A clear signal from the reaction gammagamma --> J/psi + X is seen. The number of observed N(J/psi --> mu(+)mu(-)) events is 36+/-7 for an integrated luminosity of 617 pb(-1), yielding a cross-section of sigma(J/psi + X) = 45+/-9(stat) +/- 17(syst) pb. Based on a study of the event shapes of different types of gammagamma processes in the PYTHIA program, we conclude that (74+/-22) % of the observed J/psi events are due to 'resolved' photons, the dominant contribution of which is most probably due to the gluon content of the photon. (C) 2003 Published by Elsevier B.V.
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  • Resultat 11-13 av 13
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tidskriftsartikel (13)
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refereegranskat (13)
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Abdallah, J (13)
Smirnova, Oxana (13)
Andreazza, A. (13)
Anjos, N. (13)
Baroncelli, A. (13)
Benekos, N. (13)
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Besson, N. (13)
Brenner, R. (13)
Canale, V. (13)
Di Simone, A. (13)
Dris, M. (13)
Eigen, G. (13)
Elsing, M. (13)
Fassouliotis, D. (13)
Ferrer, A. (13)
Fuster, J. (13)
Garcia, C. (13)
Graziani, E. (13)
Hamacher, K. (13)
Haug, S. (13)
Kluit, P. (13)
Kourkoumelis, C. (13)
Leitner, R. (13)
Liebig, W. (13)
Lipniacka, A. (13)
Maltezos, S. (13)
Masik, J. (13)
Meroni, C. (13)
Moa, T. (13)
Morettini, P. (13)
Nicolaidou, R. (13)
Onofre, A. (13)
Ouraou, A. (13)
Parzefall, U. (13)
Passeri, A. (13)
Salt, J. (13)
Sopczak, A. (13)
Stugu, B. (13)
Troncon, C. (13)
van Vulpen, I. (13)
Vrba, V. (13)
Weiser, C. (13)
Wicke, D. (13)
Moenig, K. (13)
Joram, C. (13)
Vegni, G. (13)
Wahlen, H. (13)
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