G. Bamford
University of Manchester
22 Papers
226 Citations
G. Bamford is an academic researcher from University of Manchester. The author has contributed to research in topics: Annihilation & Electron–positron annihilation. The author has an hindex of 15, co-authored 22 publications.
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Papers
Experimental study of jets in electron-positron annihilation
W. Bartel,D. Cords,P. Dittmann,R. Eichler,R. Felst,D. Haidt,H. Krehbiel,B. Naroska,L. H. O'Neill,P. Steffen,H. Wenninger,Y. Zhang,E. Elsen,M. Helm,A. Petersen,P. Warming,G. Weber,S. Bethke,H. Drumm,J. Heintze,G. Heinzelmann,K. H. Hellenbrand,R. D. Heuer,J. von Krogh,P. Lennert,S. Kawabata,H. Matsumura,T. Nozaki,J. Olsson,H. Rieseberg,A. Wagner,A. Bell,F. Foster,Gareth Hughes,H. Wriedt,John Allison,A. H. Ball,G. Bamford,Roger Barlow,C. Bowdery,I. P. Duerdoth,J. F. Hassard,B. T. King,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,Harrison Prosper,K. Stephens,D. Clarke,M. C. Goddard,R. Marshall,G. F. Pearce,Masatoshi Imori,T. Kobayashi,Sachio Komamiya,M. Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Orito,A. Sato,Takafumi Suda,H. Takeda,Y. Totsuka,Yosuke Watanabe,Shoichi Yamada,C. Yanagisawa +67 more
TL;DR: In this article, data on hadron production by e+e−−-annihilation at c.m. energies between 30 GeV and 36 GeV are presented and compared with two models both based on first-order QCD but using different schemes for the fragmentation of quarks and gluons into hadrons.
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Observation of a charge asymmetry in e+e− → μ+μ−
W. Bartel,D. Cords,P. Dittmann,R. Eichler,R. Felst,D. Haidt,H. Krehbiel,Karlheinz Meier,B. Naroska,L. H. O'Neill,P. Steffen,H. Wenninger,Y. Zhang,E. Elsen,A. Petersen,P. Warming,G. Weber,S. Bethke,H. Drumm,J. Heintze,G. Heinzelmann,K. H. Hellenbrand,R. D. Heuer,J. von Krogh,P. Lennert,S. Kawabata,H. Matsumura,T. Nozaki,J. Olsson,H. Rieseberg,A. Wagner,A. Bell,F. Foster,Gareth Hughes,H. Wriedt,John Allison,A. H. Ball,G. Bamford,Roger Barlow,C. Bowdery,I. P. Duerdoth,J. F. Hassard,B. T. King,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,K. Stephens,D. Clarke,M. C. Goddard,R. Marshall,G. F. Pearce,Junichi Kanzaki,T. Kobayashi,Sachio Komamiya,M. Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Odaka,S. Orito,A. Sato,H. Takeda,Y. Totsuka,Yosuke Watanabe,Shoichi Yamada,C. Yanagisawa +66 more
TL;DR: The angular distribution and s dependence of the total cross section for the process e+e− → μ+μ− have been measured using the JADE detector at PETRA as mentioned in this paper, and a forward-backward asymmetry of −(11.8±3.8) % was observed at an average centre of mass energy of 33.5 GeV.
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A search for charged scalar particles pair produced in e+e− annihilation☆
W. Bartel,D. Cords,P. Dittmann,R. Eichler,R. Felst,D. Haidt,H. Krehbiel,K. Meier,B. Naroska,L. H. O'Neill,P. Steffen,H. Wenninger,E. Elsen,A. Petersen,P. Warming,G. Weber,S. Bethke,J. Heintze,G. Heinzelmann,K. H. Hellenbrand,R. D. Heuer,S. Kawabata,S. Komamiya,J. von Krogh,P. Lennert,H. Matsumura,T. Nozaki,J. Olsson,H. Rieseberg,A. Wagner,A. Bell,F. Foster,Gareth Hughes,H. Wriedt,John Allison,A. H. Ball,G. Bamford,Roger Barlow,C. Bowdery,I. P. Duerdoth,J. F. Hassard,B. T. King,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,K. Stephens,D. Clarke,M. C. Goddard,R. Marshall,G. F. Pearce,Junichi Kanzaki,T. Kobayashi,M. Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Okada,S. Orito,A. Sato,H. Takeda,Y. Totsuka,Yosuke Watanabe,Shoichi Yamada,C. Yanagisawa +64 more
TL;DR: In this article, it was shown that unstable charged scalar particles such as technipions or charged Higgs particles pair produced in high energy e + e − annihilation can not be observed in both decay modes e+ e − →S + S − →( τν ) (hadrons) and → ( τν ǫ )(τν ).
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Upper limit on beauty lifetime and lower limit on weak mixing angles
W. Bartel,D. Cords,P. Dittmann,R. Eichler,R. Felst,D. Haidt,H. Krehbiel,Karlheinz Meier,B. Naroska,L. H. O'Neill,P. Steffen,H. Wenninger,E. Elsen,A. Petersen,P. Warming,G. Weber,S. Bethke,H. Drumm,J. Heintze,G. Heinzelmann,K. H. Hellenbrand,R. D. Heuer,J. von Krogh,P. Lennert,S. Kawabata,S. Komamiya,H. Matsumura,T. Nozaki,J. Olsson,H. Rieseberg,A. Wagner,A. Bell,F. Foster,Gareth Hughes,H. Wriedt,John Allison,A. H. Ball,G. Bamford,Roger Barlow,C. Bowdery,I. P. Duerdoth,J. F. Hassard,B. T. King,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,K. Stephens,D. Clarke,M. C. Goddard,R. Marshall,G. F. Pearce,Junichi Kanzaki,T. Kobayashi,M. Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Odaka,S. Orito,A. Sato,H. Takeda,Y. Totsuka,Yosuke Watanabe,Shoichi Yamada,C. Yanagisawa +65 more
TL;DR: In this article, a multihadron sample is used to determine an upper limit τ −12 s (95% CL) on the lifetime of a beauty particle, and the result is interpreted within the standard model.
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Measurement of the processese+e−→e+e− ande+e−→γγ at PETRA
W. Bartel,L. Becker,Christopher Bowdery,D. Cords,R. Eichler,R. Felst,D. Haidt,H. Krehbiel,B. Naroska,J. E. Olsson,P. Steffen,P. Warming,G. Dietrich,E. Elsen,G. Heinzelmann,H. Kado,K. Meier,A. Petersen,U. Schneekloth,G. Weber,S. Bethke,A. Dieckmann,Joachim Heintze,K. H. Hellenbrand,R. D. Heuer,S. Komamiya,J. von Krogh,P. Lennert,H. Matsumura,H. Rieseberg,A. P. Wagner,A. Bell,A. J. Finch,F. Foster,G. Hughes,T. Nozaki,H. Wriedt,J. Allison,A. H. Ball,G. Bamford,R. J. Barlow,I. P. Duerdoth,I. Glendinning,F. K. Loebinger,A. A. Macbeth,Hugh McCann,H. E. Mills,P. G. Murphy,P. Rowe,K. Stephens,D. Clarke,R. Marshall,G. F. Pearce,J. B. Whittaker,Junichi Kanzaki,T. Kawamoto,T. Kobayashi,Masatoshi Koshiba,Makoto Minowa,Mitsuaki Nozaki,S. Odaka,S. Orito,A. Sato,H. Takeda,Tohru Takeshita,Y. Totsuka,Yuni N. Watanabe,Shinya Yamada,C. Yanagisawa +68 more
TL;DR: In this article, cross sections for the reactionse+e−→e+e+ (Bhabha scattering) ande+ e−→γγ are measured for center-of-mass (c.m.) energies between 12.0 and 34.6 GeV.
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