W
W. Kollman
Researcher at Harvard University
Publications - 6
Citations - 192
W. Kollman is an academic researcher from Harvard University. The author has contributed to research in topics: Crystal Ball & Particle detector. The author has an hindex of 6, co-authored 6 publications receiving 186 citations.
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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
Decay J/. pi. -->. 3. gamma. and a search for the eta/sub c/
R. A. Partridge,C. W. Peck,F. C. Porter,W. Kollman,M. Richardson,K. Strauch,K. Wacker,D. Aschman,T. Burnett,M. Cavalli-Sforza,D.G. Coyne,Hartmut Sadrozinski,Elliott D. Bloom,F. Bulos,R. Chestnut,J. Gaiser,G.L. Godfrey,C. Kiesling,M. Oreglia,R. Hofstadter,I. Kirkbride,H. Kolanoski,A. Liberman,J. O'Reilly,J. Tompkins +24 more
TL;DR: In this article, the decay of a photon into two photons was studied and the branching ratio was found to be 2.7-3.0-GeV in the case of the 2.83-approximation.
Journal ArticleDOI
DecayJψ→3γand a Search for theηc
R. Partridge,C. W. Peck,F. C. Porter,W. Kollman,M. Richardson,K. Strauch,K. Wacker,D. Aschman,T. H. Burnett,Matteo Cavalli-Sforza,D. C. Coyne,H. F.W. Sadrozinski,Elliott D. Bloom,F. Bulos,R. Chestnut,J. Gaiser,G.L. Godfrey,C. Kiesling,M. J. Oreglia,R. Hofstadter,I. Kirkbride,Hermann Kolanoski,A. Liberman,J. O'Reilly,J. Tompkins +24 more
TL;DR: In this paper, the decay of a photon into two photons was studied and the branching ratio was found to be 2.7-3.0-GeV in the case of the 2.83-approximation.
Journal ArticleDOI
Observation of the Production of $\eta$ Mesons in Two Photon Collisions
A. J.R. Weinstein,D. Antreasyan,Y. F. Gu,W. Kollman,M. Richardson,K. Strauch,K. Wacker,C. A. Edwards,R. Partridge,C. W. Peck,F. C. Porter,D. Aschman,Matteo Cavalli-Sforza,D. C. Coyne,C.B. Newman-Holmes,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,M. J. Oreglia,D. L. Scharre +36 more
TL;DR: In this paper, a trigger sensitive to decays of lower-mass particles produced in two-photon collisions has been used to detect gamma gamma-gamma events consistent with the reaction.
Journal ArticleDOI
Design and Performance of a Modularized NaI(Tl) Detector (The Crystal Ball Prototype)
Y. Chan,R. A. Partridge,C. W. Peck,W. Kollman,M. Richardson,K. Strauch,D. Aschman,D. G. Coyne,B. L. Beron,R.L. Carrington,R. A. Eichler,R. Hofstadter,E. B. Hughes,G. I. Kirkbride,A. Liberman,J. O'Reilly,R. Parks,J. Rolfe,J.W. Simpson,J. Tompkins,A. Baumgarten,J. Bernstein,Elliott D. Bloom,F. Bulos,J. Dillon,J. Gaiser,G. Godfrey,J. Hall,C. Kiesling,M. Oreglia,D. Pfau,H. Royden +31 more
TL;DR: The Cluster of 54 detector as mentioned in this paper is the predecessor of the Crystal Ball detector, which is designed for the study of electron-positron collisions at colliding beam facilities, and it has been successfully tested.