K
K. Ambrus
Researcher at Heidelberg University
Publications - 44
Citations - 1262
K. Ambrus is an academic researcher from Heidelberg University. The author has contributed to research in topics: Electron–positron annihilation & Annihilation. The author has an hindex of 17, co-authored 44 publications receiving 1231 citations.
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Journal ArticleDOI
Experimental Investigation of the Energy Dependence of the Strong Coupling Strength
S. Bethke,John Allison,K. Ambrus,Roger Barlow,W. Bartel,C. K. Bowdery,S. L. Cartwright,J. T.M. Chrin,D. Clarke,A. Dieckmann,I. P. Duerdoth,G. Eckerlin,E. Elsen,R. Felst,Alexander Finch,F. Foster,T. Greenshaw,J. Hagemann,D. Haidt,J. Heintze,G. Heinzelmann,K. H. Hellenbrand,P. Hill,Gareth Hughes,H. Kado,Kiyotomo Kawagoe,Claus Kleinwort,G. Knies,T. Kobayashi,S. Komamiya,H. Krehbiel,J. von Krogh,M. Kuhlen,F. K. Loebinger,A. A. Macbeth,N. Magnussen,R. Marshall,R. Meinke,R. P. Middleton,Makoto Minowa,P. G. Murphy,B. Naroska,J. M. Nye,J. E. Olsson,F. Ould-Saada,A. Petersen,R. Ramcke,H. Rieseberg,D. Schmidt,H. vd Schmitt,L. Smolik,U. Schneekloth,J. A.J. Skard,J. Spitzer,P. Steffen,K. Stephens,A. Wagner,I. W. Walker,P. Warming,G. Weber,M. Zimmer,G. T. Zorn +61 more
TL;DR: In this article, the energy dependence of the relative production rate of three-jet events is studied in hadronic e+e− annihilation events at center of mass energies between 22 and 46.7 GeV.
Journal ArticleDOI
Experimental studies on multijet production in e+e- annihilation at PETRA energies
W. Bartel,L. Becker,R. Felst,D. Haidt,G. Knies,H. Krehbiel,P. Laurikainen,N. Magnussen,R. Meinke,B. Naroska,J. E. Olsson,D. Schmidt,G. Dietrich,T. Greenshaw,J. Hagemann,G. Heinzelmann,H. Kado,Claus Kleinwort,M. Kuhlen,A. Petersen,R. Ramcke,U. Schneekloth,G. Weber,K. Ambrus,S. Bethke,A. Dieckmann,E. Elsen,Joachim Heintze,K. H. Hellenbrand,S. Komamiya,J. von Krogh,H. Rieseberg,Hans von der Schmitt,L. Smolik,J. Spitzer,A. P. Wagner,M. Zimmer,C. K. Bowdery,A. J. Finch,F. Foster,G. Hughes,J. M. Nye,J. Allison,R. J. Barlow,J. T.M. Chrin,I. P. Duerdoth,F. K. Loebinger,A. A. Macbeth,H. E. Mills,P. G. Murphy,K. Stephens,P. Warming,R. G. Glasser,P. Hill,J. A.J. Skard,Stephen Robert Wagner,G. T. Zorn,S. L. Cartwright,D. Clarke,R. Marshall,R. P. Middleton,Kiyotomo Kawagoe,Tetsuro Mashimo,Tohru Takeshita,Shinya Yamada +64 more
TL;DR: In this article, the authors compared 2nd-order QCD calculations with 3-and 4-jet models in the energy range of 14.0-46.7 GeV and showed that the observed excess of spherical events can partially be explained by the production of multi-parton events expected from higher order QCD contributions.
Journal ArticleDOI
A measurement of the electroweak induced charge asymmetry in e + e - →bb̄
W. Bartel,L. Becker,Christopher Bowdery,D. Cords,R. Felst,D. Haidt,H. Junge,G. Knies,H. Krehbiel,P. Laurikainen,R. Meinke,B. Naroska,J. E. Olsson,E. Pietarinen,D. Schmidt,P. Steffen,M. Zachara,G. Dietrich,E. Elsen,G. Heinzelmann,H. Kado,M. Kuhlen,T. Mashimo,K. Meier,A. Petersen,U. Schneekloth,G. Weber,K. Ambrus,S. Bethke,A. Dieckmann,J. Heintze,K. H. Hellenbrand,R. D. Heuer,S. Komamiya,J. von Krogh,P. Lennert,H. Matsumura,H. Rieseberg,J. Spitzer,A. Wagner,A. J. Finch,F. Foster,Gareth Hughes,T. Nozaki,J. M. Nye,John Allison,John Baines,A. H. Ball,Roger Barlow,J. T.M. Chrin,I. P. Duerdoth,T. Greenshaw,P. Hill,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,K. Stephens,P. Warming,R. G. Glasser,B. Sechi-Zorn,J. A.J. Skard,Stephen Robert Wagner,G. T. Zorn,S. L. Cartwright,D. Clarke,R. Marshall,Robin Middleton,J. B. Whittaker,Junichi Kanzaki,T. Kawamoto,T. Kobayashi,M. Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Orito,A. Sato,H. Takeda,Tohru Takeshita,Y. Totsuka,Shoichi Yamada +81 more
TL;DR: The forward-backward charge asymmetry for the process e + e − → b b → μ ± + hadrons has been measured using the JADE detector at PETRA.
Journal ArticleDOI
Measurement of resonance production in the reactions γγ →π0π0 and γγ →π0η
T. Oest,J. E. Olsson,John Allison,K. Ambrus,R. J. Barlow,W. Bartel,S. Bethke,C. K. Bowdery,S. L. Cartwright,J. T.M. Chrin,D. Clarke,A. Dieckmann,I. P. Duerdoth,G. Eckerlin,E. Elsen,R. Felst,A. J. Finch,F. Foster,T. Greenshaw,J. Hagemann,D. Haidt,Joachim Heintze,G. Heinzelmann,K. H. Hellenbrand,P. Hill,G. Hughes,H. Kado,Kiyotomo Kawagoe,Claus Kleinwort,G. Knies,S. Komamiya,H. Krehbiel,J. v. Krogh,M. Kuhlen,F. K. Loebinger,A. A. Macbeth,N. Magnussen,R. Marshall,R. Meinke,R. P. Middleton,P. G. Murphy,B. Naroska,J. M. Nye,F. Ould-Saada,Daniel Pitzl,R. Ramcke,H. Rieseberg,A. Sato,D. Schmidt,L. Smolik,U. Schneekloth,J. A.J. Skard,J. Spitzer,P. Steffen,K. Stephens,Tohru Takeshita,A. P. Wagner,I. W. Walker,G. Weber,M. Zimmer,G. T. Zorn +60 more
TL;DR: In this paper, the JADE detector at PETRA has been used to measure the response of the γγ reaction in the mass range 2.0-3.5 GeV/c2 for the first time.
Journal ArticleDOI
Measurements of energy correlations in e + e - →hadrons
W. Bartel,L. Becker,Christopher Bowdery,D. Cords,R. Felst,D. Haidt,H. Junge,G. Knies,H. Krehbiel,P. Laurikainen,R. Meinke,K. Meissner,B. Naroska,J. E. Olsson,E. Pietarinen,D. Schmidt,P. Steffen,P. Warming,M. Zachara,G. Dietrich,E. Elsen,G. Heinzelmann,H. Kado,M. Kuhlen,T. Mashimo,K. Meier,A. Petersen,U. Schneekloth,G. Weber,K. Ambrus,S. Bethke,A. Dieckmann,J. Heintze,K. H. Hellenbrand,R. D. Heuer,S. Komaniya,J. von Krogh,P. Lennert,H. Matsumura,H. Rieseberg,J. Spitzer,A. Wagner,A. J. Finch,F. Foster,G. Hughes,T. Nozaki,J. M. Nye,J. Allison,John Baines,A. H. Ball,R. J. Barlow,J. T.M. Chrin,I. P. Duerdoth,T. Greenshaw,P. Hill,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,K. Stephens,R. G. Glasser,B. Sechi-Zorn,J. A.J. Skard,Stephen Robert Wagner,G. T. Zorn,S. L. Cartwright,D. Clarke,R. Marshall,J. B. Whittaker,Junichi Kanzaki,T. Kawamoto,T. Kobayashi,M. Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Orito,A. Sato,H. Takeda,Tohru Takeshita,Y. Totsuka,Shoichi Yamada +81 more
TL;DR: In this paper, the JADE detector has been used to measure energy-energy-correlations (EEC) at cm energies of 14 GeV, 22 GeV and 29 GeV.