J
J. P. Donker
Researcher at Technical University of Dortmund
Publications - 30
Citations - 1122
J. P. Donker is an academic researcher from Technical University of Dortmund. The author has contributed to research in topics: Branching fraction & Electron–positron annihilation. The author has an hindex of 17, co-authored 30 publications receiving 1098 citations.
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Journal ArticleDOI
Observation of B0-B0 mixing
H. Albrecht,A.A. Andam,U. Binder,P. Böckmann,R. Gläser,G. Harder,A. Nippe,M. Schäfer,W. Schmidt-Parzefall,H. Schröder,Holger Schulz,R. Wurth,A. Yagil,J. P. Donker,A. Drescher,D. Kamp,Hermann Kolanoski,U. Matthiesen,H. Scheck,B. Spaan,J. Spengler,D. Wegener,C. Ehmann,J. C. Gabriel,T. Ruf,K. R. Schubert,J. Stiewe,K. Strahl,Roland Waldi,S. Weseler,K. W. Edwards,William R. Frisken,D. J. Gilkinson,Douglas Gingrich,H. Kapitza,P. C. H. Kim,Robert K. Kutschke,D. B. Macfarlane,J. A. McKenna,K. W. McLean,A. W. Nilsson,R. S. Orr,P. Padley,J. A. Parsons,P. M. Patel,J. D. Prentice,H. C. J. Seywerd,J. D. Swain,G. Tsipolitis,T. S. Yoon,J. C. Yun,R. Ammar,D. Coppage,R. Davis,S. Kanekal,N. Kwak,B. Boštjančič,G. Kernel,M. Pleško,Leif J. Jönsson,Anton Babaev,M. Danilov,B. Fominykh,A. Golutvin,I. V. Gorelov,V. Lubimov,V. Matveev,V. Nagovitsin,V. Ryltsov,A. Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,Y. Oku,H. Gennow +78 more
TL;DR: In this paper, the ARGUS detector at the DORIS II storage ring has been used in three different ways for B0-B 0 mixing in ϒ (4S) decays.
Journal ArticleDOI
Measurement of the Decay B0 ---> D*- Lepton+ Neutrino
H. Albrecht,A.A. Andam,U. Binder,P. Böckmann,R. Gläser,G. Harder,A. Nippe,M. Schäfer,W. Schmidt-Parzefall,H. Schröder,Holger Schulz,R. Wurth,A. Yagil,J. P. Donker,A. Drescher,D. Kamp,Hermann Kolanoski,U. Matthiesen,H. Scheck,B. Spaan,J. Spengler,D. Wegener,J. C. Gabriel,T. Ruf,K. R. Schubert,J. Stiewe,K. Strahl,R. Waldi,K. W. Edwards,Wr Frisken,D. J. Gilkinson,Doug Gingrich,H. Kapitza,P. C. H. Kim,Robert K. Kutschke,D. B. MacFarlane,J. A. McKenna,K. W. McLean,A. W. Nilsson,R. S. Orr,P. Padley,J. A. Parsons,P. M. Patel,J. D. Prentice,H. Seywerd,J. D. Swain,Georgios Tsipolitis,T. S. Yoon,J. C. Yun,R. Ammar,D. Coppage,R. Davis,S. Kanekal,N. Kwak,B. Boštjančič,G. Kernel,M. Pleško,Leif J. Jönsson,Anton Babaev,M. Danilov,B. Fominykha,A. Golutvin,I. V. Gorelov,V. Lubimov,V. Matveev,V. Nagovitsin,V. Ryltsov,A. Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,Y. Oku +75 more
TL;DR: Using the ARGUS detector at the e + e − storage ring DORIS II at DESY, this article investigated the decays B 0 → D ∗− e + v and B 0→D ∗ − μ + ν.
Journal ArticleDOI
Observation of a new charmed meson
H. Albrecht,U. Binder,G. Harder,Lembke-Koppitz I I,A. Philipp,W. Schmidt-Parzefall,H. Schröder,H.D. Schulz,R. Wurth,J. P. Donker,A. Drescher,U. Matthiesen,H. Scheck,B. Spaan,J. Spengler,Wegener aD,J. C. Gabriel,K. R. Schubert,J. Stiewe,R. Waldi,S. Weseler,N. N. Brown,K. W. Edwards,Wr Frisken,C. Fukunaga,D. J. Gilkinson,D. M. Gingrich,M. Goddard,H. Kapitza,P. C. H. Kim,Robert K. Kutschke,D. B. MacFarlane,J. A. McKenna,K. W. McLean,A. W. Nilsson,R. S. Orr,P. Padley,P. M. Patel,J. D. Prentice,H. Seywerd,B. J. Stacey,T. S. Yoon,J. C. Yun,R. Ammar,D. Coppage,R. Davis,S. Kanekal,N. Kwak,G. Kernel,Pleko M,Leif J. Jönsson,Y. Oku,Anton Babaev,M. Danilov,A. Golutvin,Lubimov,Matveev,Nagovitsin,Ryltsov,A. Semenov,Soloshenko,Sopov,Tichomirov I I +62 more
TL;DR: Using the ARGUS detector at the DORIS II e/sup +/e/sup -/ storage ring at DESY, evidence is obtained for a new charmed resonance which decays into D/sup asteriskplus-or-minus/(2010)..pi../sup - +/.
Journal ArticleDOI
Measurement of tau decays into three charged pions
H. Albrecht,U. Binder,P. Böckmann,R. Gläser,G. Harder,I. Lembke-Koppitz,A. Philipp,W. Schmidt-Parzefall,H. Schröder,H.D. Schulz,R. Wurth,A. Yagil,J. P. Donker,A. Drescher,D. Kamp,U. Mattiesen,H. Scheck,B. Spaan,J. Spengler,D. Wegener,J. C. Gabriel,K. R. Schubert,J. Stiewe,K. Strahl,Roland Waldi,S. Weseler,K. W. Edwards,Wr Frisken,C. Fukunaga,D. J. Gilkinson,D. M. Gingrich,M. Goddard,H. Kapitza,P. C. H. Kim,Robert K. Kutschke,D. B. MacFarlane,J. A. McKenna,K. W. McLean,A. W. Nilsson,R. S. Orr,P. Padley,P. M. Patel,J. D. Prentice,H. Seywerd,T. S. Yoon,J. C. Yun,R. Ammar,D. Coppage,Raymond Davis,S. Kanekal,N. Kwak,G. Kernel,M. Pleško,K. Jönsson,A. Bahaev,M. Danilov,A. Golutvin,I. Gorelov,V. Lubimov,V. Matveev,V. Nagovitsin,V. Ryltsov,A. Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,Y. Oku,H. Gennow +71 more
TL;DR: In this paper, the decay τ−→τ−τ+τ−vτ using the ARGUS detector at the DORIS II storage ring has been studied and the dominant mode for this decay is observed to beρ0π− in aJp=1+ spin state.
Journal ArticleDOI
An improved upper limit on the ντ-mass from the decay π−→π−π−π−π+π+ντ
H. Albrecht,U. Binder,P. Böckmann,R. Gläser,G. Harder,A. Krüger,A. Nippe,M. Schäfer,W. Schmidt-Parzefall,H. Schröder,Holger Schulz,F. Sefkow,R. Wurth,A. Yagil,R. D. Appuhn,J. P. Donker,A. Drescher,D. Kamp,Hermann Kolanoski,U. Matthiesen,H. Scheck,G. Schweda,B. Spaan,J. Spengler,A. Walther,D. Wegener,J. C. Gabriel,T. Ruf,K. R. Schubert,J. Stiewe,K. Strahl,R. Waldi,K. W. Edwards,William R. Frisken,D. J. Gilkinson,Douglas Gingrich,H. Kapitza,P. C. H. Kim,Robert K. Kutschke,D. B. Macfarlane,J. A. McKenna,K. W. McLean,A. W. Nilsson,R. S. Orr,P. Padley,J. A. Parsons,P. M. Patel,J. D. Prentice,H. C. J. Seywerd,J. D. Swain,G. Tsipolitis,T. S. Yoon,J. C. Yun,R. Ammar,S. Ball,D. Coppage,R. Davis,S. Kanekal,N. Kwak,B. Boštjančič,G. Kernel,P. Križan,Leif J. Jönsson,Anton Babaev,M. Danilov,B. Fominykh,A. Golutvin,I. V. Gorelov,V. Lubimov,V. Matveev,V. Ryltsov,A. Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,R. C. Fernholz,Y. Oku +80 more
TL;DR: In this article, the ARGUS detector at the e + e − storage ring DORIS II was used to detect tau-pair events produced at center-or-mass energies between 9.4 and 10.6 GeV.