H. Borner | Researchain

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Featured researches published by H. Borner.

Physics Letters B | 1991

Experimental study of the triple-gluon vertex

P. Abreu; W. Adam; F. Adami; T. Adye; T. P. A. Åkesson; P. Allen; S. Almehed; F. Alted; B. Åsman; Pierre Astier; A. Augustinus; F. Barao; G. Barbiellini; A. Baroncelli; O. Barring; W. Bartl; M. Baubillier; M. Begalli; I. Belokopytov; P. Beltran; D. Benedic; M. Berggren; D. Bertrand; S. Biagi; F. Bianchi; P. Billoir; D. Bloch; D. Bollini; T. Bolognese; M. Bonapart

Abstract In four-jet events from e+e− →Z0 →multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter angle θ NR ∗ and the opening angle of the secondary jets. Thus one can identify directly the contribution from the triple-gluon vertex without comparison with a specific non-QCD model. Applying this new method to events taken with the DELPHI-detector we get for the ratio of the colour factor Nc to the fermionic Casimir operator C F : N c C F = 2.55 ± 0.55 ( stat. ) ± 0.4 ( fragm. + models ) ± 0.2 ( error in bias ) in agreement with the value 2.25 expected in QCD from Nc=3 and C F = 4 3 .

European Physical Journal C | 1993

Neutral strange particle production in neutrino and antineutrino charged current interactions on protons

G. Jones; R. W. L. Jones; B. W. Kennedy; S. W. O'Neale; O. Villalobos-Baillie; D. R. O. Morrison; P. Schmid; H. Wachsmuth; D. B. Miller; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; H. Borner; G. Myatt; D. Radojicic; F.W. Bullock; S. Burke

AbstractThe production of the neutral strange particlesK0, Λ and

European Physical Journal C | 1991

Inclusive ρ0(770) meson production invp and\(\bar vp\) charged current interactions

G. Jones; R. W. L. Jones; B. W. Kennedy; D. R. O. Morrison; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; E. Hoffmann; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; H. Borner; G. Myatt; D. Radojicic; S. Burke

European Physical Journal C | 1994

Determination of the parton distributions and structure functions of the proton from neutrino and antineutrino reactions on hydrogen and deuterium

G. Jones; R. W. L. Jones; B. W. Kennedy; D. R. O. Morrison; H. Wachsmuth; D. B. Miller; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; H. Borner; G. Myatt; A. M. Cooper-Sarkar; J. Guy; W. Venus; F.W. Bullock; S. Burke

\bar \Lambda

European Physical Journal A | 1994

Determination of the ratior v =d v u v of the valence quark distributions in the proton from neutrino and antineutrino reactions on hydrogen and deuterium

European Physical Journal C | 1990

W 2 andQ 2 dependence of charged hadron and pion multiplicities invp and\(\bar vp\) charged current interactionscharged current interactions

G. Jones; R. W. L. Jones; D. R. O. Morrison; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; E. Hoffmann; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; Phillip Allport; H. Borner; G. Myatt; D. Radojicic; F.W. Bullock; S. Burke

invp and

European Physical Journal C | 1993

Diffractive production of ρ-mesons and of ρπ-systems by neutrinos and antineutrinos on protons

G. Jones; R. W. L. Jones; B. W. Kennedy; D. R. O. Morrison; D. B. Miller; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; H. Borner; G. Myatt; F.W. Bullock; S. Burke

European Physical Journal C | 1992

Multiplicity distributions of charged hadrons invp and charged current interactions

G. Jones; R. W. L. Jones; B. W. Kennedy; D. R. O. Morrison; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; H. Borner; G. Myatt; D. Radojicic; S. Burke

\bar vp

European Physical Journal A | 1989

Experimental test of the PCAC hypothesis in the reactionsvμp→ μ−pπ+ and\( \bar v_\mu p \to \mu ^ + p\pi ^ - \) in theΔ(1232) region

G. Jones; R. W. L. Jones; B. W. Kennedy; S. W. O'Neale; D. R. O. Morrison; M. M. Mobayyen; S. Wainstein; M. Aderholz; D. Hantke; E. Hoffmann; U. F. Katz; J. Kern; N. Schmitz; W. Wittek; Phillip Allport; H. Borner; G. Myatt; D. Radojicic; F.W. Bullock; S. Burke

Proceedings of the 26th International Conference on High Energy Physics | 2008

The DELPHI microvertex detector

M. Caccia; H. Borner; V. Chabaud; H. Dijkstra; P. Eerola; E. Gross; B. Hyams; R. Horisberger; L. Hubbeling; Magnus Karlsson; G. Maehlum; I. Roditi; J. Straver; W. Trischuk; P. Weilhammer; Y. Dufour; P. Bruckman; P. Jal; ocha; P. Kapusta; M. Tural; A. Zalewska; J. Lindgren; R. Orava; K. Osterberg; C. Ronnqvist; H. Saarikko; J.P. Saarikko; T. Tuuva; B. d’Almagne

charged current interactions is studied in an experiment with the Big European Bubble Chamber. Mean multiplicities are measured as a function of the event variablesEv,W2 andQ2 and of the hadron variablesxF,z andpT2.K*± (892) and∑*± (1385) signals are observed, whereas there is no evidence for∑*- (1385) production invp scattering. Forward, backward and total mean multiplicities are found to compare well with the predictions of an empirical model for deep-inelastic reactions in the case of the strange mesonsK0 andK*± (892) but less so for the strange baryons Λ,

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