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APS » Journals » Phys. Rev. Lett. » Volume 33 » Issue 23
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Phys. Rev. Lett. 33, 1404–1406 (1974)

Experimental Observation of a Heavy Particle J

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J. J. Aubert, U. Becker, P. J. Biggs, J. Burger, M. Chen, G. Everhart, P. Goldhagen, J. Leong, T. McCorriston, T. G. Rhoades, M. Rohde, Samuel C. C. Ting, and Sau Lan Wu
Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Y. Y. Lee
Brookhaven National Laboratory, Upton, New York 11973

Received 12 November 1974; published in the issue dated 2 December 1974

We report the observation of a heavy particle J, with mass m=3.1 GeV and width approximately zero. The observation was made from the reaction p+Be→e++e-+x by measuring the e+e- mass spectrum with a precise pair spectrometer at the Brookhaven National Laboratory's 30-GeV alternating-gradient synchrotron.

© 1974 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.33.1404
DOI:
10.1103/PhysRevLett.33.1404
PACS:

See Also

Comment: A. Pais and V. Rittenberg, Comment on Nonleptonic Decays of Charmed Hadrons, Phys. Rev. Lett. 34, 707 (1975).

Comment: D. R. Yennie, Comment on Radiative Corrections to e+e-→ψ(3105), Phys. Rev. Lett. 34, 239 (1975).

Comment: H. Goldberg, Color Gluons and the Decay of the ψ(3700) into ψ(3100), Phys. Rev. Lett. 35, 605 (1975).

 
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