J
J. K. Sedgebeer
Researcher at Imperial College London
Publications - 5
Citations - 471
J. K. Sedgebeer is an academic researcher from Imperial College London. The author has contributed to research in topics: Elementary particle & Hadron. The author has an hindex of 5, co-authored 5 publications receiving 462 citations.
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Journal ArticleDOI
Evidence for planar events in e+e− annihilation at high energies
R. Brandelik,W. Braunschweig,K. Gather,V. Kadansky,K. Lübelsmeyer,P. Mättig,H. U. Martyn,G. Peise,J. Rimkus,H. G. Sander,D.W. Schmitz,A. Schultz von Dratzig,D. Trines,W. Wallraff,H. Boerner,H. M. Fischer,H. Hartmann,E. Hilger,Walter Dr. Hillen,G. Knop,W. Korbach,P. Leu,B. Löhr,F. Roth,W. Rühmer,R. Wedemeyer,Norbert Wermes,M. Wollstadt,R. Buhring,R. Fohrmann,D. Heyland,H. Hultschig,P. Joos,W. Koch,U. Kötz,H. Kowalski,A. Ladage,D. Lüke,H. L. Lynch,G. Mikenberg,D. Notz,J. Pyrlik,R. Riethmüller,M. Schliwa,P. Söding,B. H. Wiik,Gy. Wolf,M. Holder,G. Poelz,J. Ringel,O. Römer,R. Rüsch,P. Schmüser,D. M. Binnie,P. J. Dornan,N. A. Downie,D. A. Garbutt,W. G. Jones,Stephen Lloyd,D. Pandoulas,A. Pevsner,J. K. Sedgebeer,S. Yarker,C. Youngman,Roger Barlow,Rj Cashmore,John Illingworth,M. Ogg,Gl Salmon,K. W. Bell,W. Chinowsky,B. Foster,John Hart,J. Proudfoot,D. R. Quarrie,D. H. Saxon,P. L. Woodworth,Y. Eisenberg,U. Karshon,E. Kogan,D. Revel,E.E. Ronat,A. Shapira,John Freeman,P. Lecomte,T. Meyer,Lan. Wu Sau,Georg Zobernig +87 more
TL;DR: Hadron jets produced in e+e− annihilation between 13 GeV and 31.6 GeV in c.m. energy at PETRA are analyzed in this article, showing that the broadening of the jets is not uniform in azimuthal angle around the quark direction but tends to yield planar events with large and growing transverse momenta in the plane and smaller transverse momentsa normal to the plane.
Journal ArticleDOI
Charged hadron composition of the final-state in e+e- annihilation at high-energies
M. Althoff,R. Brandelik,W. Braunschweig,K. Gather,F. J. Kirschfink,K. Lübelsmeyer,H. U. Martyn,G. Peise,J. Rimkus,H. G. Sander,D.W. Schmitz,H. Siebke,D. Trines,W. Wallraff,H. Boerner,H. M. Fischer,H. Hartmann,E. Hilger,Walter Dr. Hillen,G. Knop,L. Köpke,Hermann Kolanoski,H. Kück,R. Wedemeyer,Norbert Wermes,M. Wollstadt,H. Burkhardt,S. J. Cooper,J. Franzke,H. Hultschig,P. Joos,W. Koch,U. Kötz,H. Kowalski,A. Ladage,B. Löhr,D. Lüke,P. Mättig,K. H. Mess,D. Notz,J. Pyrlik,D. R. Quarrie,R. Riethmüller,W. Schütte,P. Söding,Gy. Wolf,G. Yekutieli,R. Fohrmann,Hl Krasemann,P. Leu,E. Lohrmann,D. Pandoulas,G. Poelz,O. Römer,P. Schmüser,B. H. Wiik,I. Al-Agil,R. Beuselinck,D. M. Binnie,A. J. Campbell,P. J. Dornan,D. A. Garbutt,T. D. Jones,W. G. Jones,Stephen Lloyd,J. McCardle,J. K. Sedgebeer,K. W. Bell,M. G. Bowler,I. C. Brock,Rj Cashmore,R. Carnegie,P. E. L. Clarke,R.C.E. Devenish,P. Grossmann,John Illingworth,Gl Salmon,Juergen Thomas,T. R. Wyatt,C. Youngman,B. Foster,John Hart,J. Harvey,J. Proudfoot,D. H. Saxon,P. L. Woodworth,D. Heyland,M. Holder,Ehud Duchovni,Y. Eisenberg,U. Karshon,Giora Mikenberg,D. Revel,E.E. Ronat,A. Shapira,T. Barklow,John Freeman,P. Lecomte,T. Meyer,G. Rudolph,H. Venkataramania,E. Wicklund,Sau Lan Wu,Georg Zobernig +103 more
TL;DR: In this paper, the production of π± and K± mesons and of protons and antiprotons ine+e− annihilation has been measured at c.m. energies of W=14, 22 and 34GeV.
Journal ArticleDOI
Angular correlations in γγ→ρ 0 ρ 0 near threshold
M. Althoff,W. Braunschweig,K. Gather,F. J. Kirschfink,K. Lübelsmeyer,H. U. Martyn,G. Peise,J. Rimkus,H. G. Sander,D.W. Schmitz,H. Siebke,D. Trines,W. Wallraff,H. Boerner,H. M. Fischer,H. Hartmann,E. Hilger,Walter Dr. Hillen,G. Knop,L. Köpke,Hermann Kolanoski,R. Wedemeyer,Norbert Wermes,M. Wollstadt,H. Burkhardt,S. Cooper,J. Franzke,H. Hultschig,P. Joos,W. Koch,U. Kötz,H. Kowalski,A. Ladage,B. Löhr,D. Lüke,P. Mättig,K. H. Mess,D. Notz,J. Pyrlik,D. R. Quarrie,R. Riethmüller,W. Schütte,P. Söding,Gy. Wolf,G. Yekutieli,M. Dittmar,R. Fohrmann,Hl Krasemann,P. Leu,E. Lohrmann,D. Pandoulas,G. Poelz,O. Römer,P. Schmüser,B. H. Wiik,I. Al-Agil,R. Beuselinck,D. M. Binnie,A. J. Campbell,P. J. Dornan,D. A. Garbutt,T. D. Jones,W. G. Jones,Stephen Lloyd,J. McCardle,J. K. Sedgebeer,K. W. Bell,M. G. Bowler,I. C. Brock,R. J. Cashmore,R. Carnegie,P. E. L. Clarke,R.C.E. Devenish,P. Grossmann,John Illingworth,Gl Salmon,Juergen Thomas,T. R. Wyatt,C. Youngman,B. Foster,John Hart,J. Harvey,J. Proudfoot,D. H. Saxon,P. L. Woodworth,D. Heyland,M. Holder,Ehud Duchovni,Y. Eisenberg,U. Karshon,G. Mikenberg,D. Revel,E.E. Ronat,A. Shapira,T. Barklow,T. Meyer,G. Rudolph,H. Venkataramania,E. Wicklund,Sau Lan Wu,Georg Zobernig +100 more
TL;DR: In this paper, an analysis of ωρ0ρ0 ω invariant mass range from 1.2 to 2.0 GeV is presented, where the authors exclude a dominant contribution from JP=0− or 2− states.
Journal ArticleDOI
Production of KK-pairs in photon-photon collisions and the excitation of the tensor meson f′(1515)
M. Althoff,R. Brandelik,W. Braunschweig,K. Gather,F. J. Kirschfink,K. Lübelsmeyer,H. U. Martyn,G. Peise,J. Rimkus,H. G. Sander,D.W. Schmitz,H. Siebke,D. Trines,W. Wallraff,H. Boerner,H. M. Fischer,H. Hartmann,E. Hilger,Walter Dr. Hillen,G. Knop,L. Köpke,Hermann Kolanoski,H. Kück,R. Wedemeyer,Norbert Wermes,M. Wollstadt,H. Burkhardt,S. J. Cooper,J. Franzke,D. Hochman,H. Hultschig,P. Joos,W. Koch,U. Kötz,H. Kowalski,A. Ladage,B. Löhr,D. Lüke,P. Mättig,K. H. Mess,D. Notz,J. Pyrlik,D. R. Quarrie,R. Riethmüller,W. Schütte,P. Söding,Gy. Wolf,G. Yekutieli,R. Fohrmann,Hl Krasemann,P. Leu,E. Lohrmann,D. Pandoulas,G. Poelz,P. Schmüser,B. H. Wiik,I. Al-Agil,R. Beuselinck,D. M. Binnie,A. J. Campbell,P. J. Dornan,B. Foster,D. A. Garbutt,T. D. Jones,W. G. Jones,J. McCardle,J. K. Sedgebeer,K. W. Bell,M. G. Bowler,I. C. Brock,R. J. Cashmore,R. Carnegie,P. E. L. Clarke,R.C.E. Devenish,P. Grossmann,John Illingworth,Stephen Lloyd,Gl Salmon,Juergen Thomas,T. R. Wyatt,C. Youngman,John Hart,J. Harvey,J. Proudfoot,D. H. Saxon,P. L. Woodworth,D. Heyland,M. Holder,Ehud Duchovni,Y. Eisenberg,U. Karshon,G. Mikenberg,D. Revel,E.E. Ronat,A. Shapira,T. Barklow,M. Cherney,T. Meyer,G. Rudolph,H. Venkataramania,E. Wicklund,Sau Lan Wu,Georg Zobernig +102 more
TL;DR: In this paper, the f′(1515) tensor meson was observed to be produced in a helicity 2 state, and an upper bound of 0.11 ± 0.04 keV was derived for the product Λ(θ rarr; γγ K K ) keV (95% CL ).
Journal ArticleDOI
TPC90, a test model for the ALEPH time projection chamber
Salvator Roberto Amendolia,R. Benetta,M. Binder,W. Blum,A. Caldwell,M. Cherney,D. F. Cowen,David DeMille,A. Farilla,F. Fidecaro,Y.N. Guo,Joseph Izen,R.C. Jared,W. Kilgore,Konrad Kleinknecht,I. Lehraus,F. Liello,Jeffrey J. Love,A. Lusiani,P. Maas,P.S. Marrocchesi,R. Matthewson,J. May,M. Mermikides,Edoardo Milotti,A. Minten,Emmanuel Monnier,Dominik Müller,A. Peisert,M.J. Price,Francesco Ragusa,C. Raine,J. Richstein,R. Richter,L. Rolandi,G. Sanguinetti,W.D. Schlatter,J. K. Sedgebeer,R. Settles,G. Sinnis,K. M. Smith,G. Stefanini,U. Stierlin,M. Takashima,W. Tejessy,Juergen Thomas,A. Vayaki,Jon-Paul R. Wells,E. Wicklund,W. Witzeling,Sau Lan Wu,W. Wu +51 more
TL;DR: The ALEPH time projection chamber as mentioned in this paper consists of a solenoid magnet providing a magnetic field up to 1.2 T inside a cylindric field cage of 75 cm diameter and 1.3 m length.