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Observation of the production of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi></mml:math>mesons in two-photon collisions

A. Weinstein,D. Antreasyan,Y. F. Gu,W. Kollman,M. Richardson,K. Strauch,K. Wacker,C. A. Edwards,R. Partridge,C. Peck,F. C. Porter,D. Aschman,M. Cavalli‐Sforza,D. G. Coyne,C. Newman-Holmes,Hartmut Sadrozinski,D. Gelphman,R. Hofstadter,Roland Horisberger,I. Kirkbride,H. Kolanoski,K. Königsmann,R. Lee,A. Liberman,J. O’Reilly,A. L. Osterheld,B. Pollock,J. Tompkins,E. D. Bloom,F. Bulos,R. Chestnut,J. Gaiser,G. Godfrey,C. Kiesling,W. S. Lockman,M. J. Oreglia,D. L. Scharre

Physics

Particle physics

Pseudoscalar

1983

Using 2674 nb−1 of data taken at √s from 5.00 to 7.25 GeV with a trigger sensitive to decays of lower-mass particles produced in two-photon collisions, we have observed 56±12 events consistent with the reaction e+e−→e+e−η, η→γγ. Background has been subtracted using separated-beam data. We obtain Γγγ(η)=0.56±0.16 keV and the pseudoscalar-nonet mixing angle θP=−17.6°±3.6°.Received 13 September 1983DOI:https://doi.org/10.1103/PhysRevD.28.2896©1983 American Physical Society

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“Observation of the production of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi></mml:math>mesons in two-photon collisions” is a paper by A. Weinstein D. Antreasyan Y. F. Gu W. Kollman M. Richardson K. Strauch K. Wacker C. A. Edwards R. Partridge C. Peck F. C. Porter D. Aschman M. Cavalli‐Sforza D. G. Coyne C. Newman-Holmes Hartmut Sadrozinski D. Gelphman R. Hofstadter Roland Horisberger I. Kirkbride H. Kolanoski K. Königsmann R. Lee A. Liberman J. O’Reilly A. L. Osterheld B. Pollock J. Tompkins E. D. Bloom F. Bulos R. Chestnut J. Gaiser G. Godfrey C. Kiesling W. S. Lockman M. J. Oreglia D. L. Scharre published in 1983. It has an Open Access status of “green”. You can read and download a PDF Full Text of this paper here.