Yannick Dufour

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Vaccines that can coordinately induce multi-epitope T cell-mediated immunity, T helper functions, and immunologic memory may offer effective tools for cancer immunotherapy. Here, we report the development of a new class of recombinant protein cancer vaccines that deliver different CD8(+) and CD4(+) T-cell epitopes presented by MHC class I and class II(More)
Three jet events arising from decays of the Z boson, collected by the DELPHI detector, were used to measure differences in quark and gluon fragmentation. Gluon jets were anti-tagged by identifying b quark jets. Unbiased quark jets came from events with two jets plus one photon. Quark and gluon jet properties in different energy ranges were compared for the(More)
From the combined data of 1990 and 1991 of the DELPHI experiment at LEP, 13057 4-jet events are obtained and used for determining the contribution of the triple-gluon vertex. The relevant variables are the generalized Nachtmann Reiter angle 0* R and the opening angle of the two least energetic jets. A fit to their twodimensional distribution yields(More)
A study of the fragmentation properties of charm and bot tom quarks into D mesons is presented. From 263 700 Z ~ hadronic decays collected in 1991 with the DELPHI detector at the LEP collider, D ~ D + and D *+ are reconstructed in the modes K n + K n + n + and DOn + followed by D ~ + , respectively. The fractional decay widths F ( Z ~ are determined, and(More)
Distributions of event shape variables obtained from 120600 hadronic Z decays measured with the DELPHI detector are compared to the predictions of QCD based event generators. Values of the strong coupling constant c~ s are derived as a function of the renormalization scale from a quantitative analysis of eight hadronic distributions. The final result, c%(More)
A new measurement of ~ is obtained from the distributions in thrust, heavy jet mass, energy-energy correlation and two recently introduced jet broadening variables following a method proposed by Catani, Trentadue, Turnock and Webber. This method includes the full calculation of ~y(~2) terms and leading and next-toleading logarithms resummed to all orders of(More)
The differential cross section for final state radiation from primary quarks is obtained from a study of isolated energetic photons produced in the reaction e + e ~ Z ~ ~ h a d r o n s + 7 , as measured in the D E L P H I detector at the CERN LEP collider. When combined with the measurement of the total hadronic width of the Z ~ the observed rate determines(More)
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