R
R. Hofstadter
Researcher at Stanford University
Publications - 76
Citations - 1787
R. Hofstadter is an academic researcher from Stanford University. The author has contributed to research in topics: Branching fraction & Crystal Ball. The author has an hindex of 23, co-authored 76 publications receiving 1755 citations.
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Journal ArticleDOI
Measurement of pi 0 pi 0 production in two-photon collisions.
H. Marsiske,D. Antreasyan,H. W. Bartels,D. Besset,Ch Bieler,J. K. Bienlein,Andrea Bizzeti,Elliott D. Bloom,I. C. Brock,K. Brockmüller,R. Cabenda,A. M. Cartacci,M. Cavalli-Sforza,R. Clare,A. Compagnucci,G. Conforto,S. Cooper,R. Cowan,D. G. Coyne,A. Engler,K. Fairfield,G. Folger,A. Fridman,D. Gaiser,D. Gelphman,G. Glaser,G.L. Godfrey,K. Graaf,F. H. Heimlich,F. H. Heimlich,F. H. Heinsius,R. Hofstadter,J. Irion,Z. Jakubowski,H. Janssen,K. Karch,S. Keh,T. Kiel,H. Kilian,I. Kirkbride,T. Kloiber,M. Kobel,W. Koch,A. C. König,K. Königsmann,R. W. Kraemer,S. Krüger,G. Landi,R. Lee,S. Leffler,R. Lekebusch,A. M. Litke,W. Lockman,S. Lowe,B. Lurz,D. Marlow,W. Maschmann,P. McBride,F. Messing,W. J. Metzger,H. Meyer,B. Monteleoni,B. Muryn,B. Muryn,R. Nernst,B. Niczyporuk,Grzegorz Nowak,C. W. Peck,P. G. Pelfer,B. Pollock,F. C. Porter,D. Prindle,P. Ratoff,M. Reidenbach,B. Renger,C. Rippich,M. Scheer,P. Schmitt,J. Schotanus,J. Schütte,A. Schwarz,D. Sievers,Tomasz Skwarnicki,V. Stock,K. Strauch,U. Strohbusch,J. Tompkins,H. J. Trost,B. van Uitert,R. T. Van de Walle,Hans J. Vogel,A. Voigt,U. Volland,K. Wachs,K. Wacker,W. Walk,H. Wegener,D. A. Williams,D. A. Williams,P. Zschorsch +99 more
TL;DR: In this paper, the authors measured the cross section of the Crystal Ball detector at the DESY storage ring DORIS II at beam energies around 5.3 GeV and deduced the following two-photon widths:
Journal ArticleDOI
The project EGRET (Energetic Gamma-Ray Experiment Telescope) on NASA's Gamma-Ray Observatory (GRO)
Gottfried Kanbach,D. L. Bertsch,A. J. Favale,C. E. Fichtel,R. C. Hartman,R. Hofstadter,E. B. Hughes,Stanley D. Hunter,B. W. Hughlock,D. A. Kniffen,Yiing Lin,H. A. Mayer-Hasselwander,P. L. Nolan,K. Pinkau,H. Rothermel,E. J. Schneid,M. Sommer,D. J. Thompson +17 more
TL;DR: The Gamma Ray Observatory (GRO) is currently planned for a launch from the space shuttle in 1990 as mentioned in this paper, which will carry four instruments designed to cover this range of over five decades in photon energy.
Journal ArticleDOI
Observation of an eta eta Resonance in J/psi Radiative Decays
C. A. Edwards,R. Partridge,C. W. Peck,F. C. Porter,D. Antreasyan,Y. F. Gu,W. Kollmann,M. Richardson,K. Strauch,K. Wacker,A. J.R. Weinstein,D. Aschman,T. H. Burnett,Matteo Cavalli-Sforza,D. C. Coyne,C. Newman,Hartmut Sadrozinski,D. Gelphman,R. Hofstadter,Roland Horisberger,I. Kirkbride,Hermann Kolanoski,K. Königsmann,R. Lee,A. Liberman,J. O'Reilly,A. Osterheld,B. Pollock,J. Tompkins,Elliott D. Bloom,F. Bulos,R. Chestnut,J. Gaiser,G.L. Godfrey,C. Kiesling,W. S. Lockman,Mark Oreglia,D. L. Scharre +37 more
TL;DR: The resonance parameters of the theta are M = 1640 +- 50 MeV and GAMMA = 220/sup +100/sub -/70 MeV as mentioned in this paper.
Journal ArticleDOI
Charmonium Spectroscopy from Inclusive psi-prime and J/psi Radiative Decays
J. Gaiser,Elliott D. Bloom,F. Bulos,G.L. Godfrey,C. Kiesling,W. S. Lockman,M. J. Oreglia,D. L. Scharre,C. A. Edwards,R. Partridge,C. W. Peck,F. C. Porter,D. Antreasyan,Y. F. Gu,J. Irion,W. Kollman,K. Strauch,K. Wacker,and A. Weinstein,D. Aschman,T. H. Burnett,Matteo Cavalli-Sforza,D. C. Coyne,C. Newman,Hartmut Sadrozinski,D. Gelphman,R. Hofstadter,Roland Horisberger,I. Kirkbride,Hermann Kolanoski,K. Königsmann,R. Lee,A. Liberman,J. O'Reilly,A. Osterheld,B. Pollock,J. Tompkins +36 more
TL;DR: In this article, a detailed study using the crystal ball detector at the SLAC (e}+}$${e}^{\mathrm{\ensuremath{-}}}$ storage ring SPEAR of the inclusive photon spectra from 1.8 to 2.5 MeV is presented.
Journal ArticleDOI
Identification of a Pseudoscalar State at 1440 MeV IN Jpsi Radiative Decays. : Observation of a Pseudoscalar State at 1440-MeV in J/psi Radiative Decays
C. A. Edwards,F. C. Porter,D. L. Scharre,C. W. Peck,R. Hofstadter,D.G. Coyne,J. O'Reilly,M. J. Oreglia,A. J.R. Weinstein,R. Lee,Roland Horisberger,G.L. Godfrey,A. Osterheld,Elliott D. Bloom,F. Bulos,R. Partridge,C.B. Newman-Holmes,D. Antreasyan,D. Aschman,Y. F. Gu,I. Kirkbride,William S. Lockman,M. Richardson,Hermann Kolanoski,A. Liberman,J. Tompkins,H. F.W. Sadrozinski,K. Wacker,W. Kollmann,T. H. Burnett,R. Chestnut,J. Gaiser,D. Gelphman,Bradley H Pollock,C. Kiesling,K. Strauch,Matteo Cavalli-Sforza,K. Königsmann +37 more
TL;DR: In this article, it was determined that the quantum numbers of the K& resonance at 1440 MeV, previously identified as the E(1420), are J PC = O-+.