Experimental Observation of a Heavy Particle <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>J</mi></math></span>

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; Sau Lan Wu; Y. Y. Lee

doi:10.1103/PhysRevLett.33.1404

Abstract

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 $p + Be \to e^{+} + e^{-} + x$ by measuring the $e^{+} e^{-}$ mass spectrum with a precise pair spectrometer at the Brookhaven National Laboratory's 30-GeV alternating-gradient synchrotron.

Received 12 November 1974

DOI:https://doi.org/10.1103/PhysRevLett.33.1404

Collections

This article appears in the following collection:

Letters from the Past - A PRL Retrospective

2008 marked PRL’s 50th anniversary. As part of the celebrations a collection of milestone Letters was started. The collection contains Letters that have made long-lived contributions to physics, either by announcing significant discoveries, or by initiating new areas of research.

Focus

Landmarks—The Charming Debut of a New Quark

Published 26 February 2016

An unexpected particle discovery in 1974 was the first evidence for a fourth type of quark.

See more in Physics

Authors & Affiliations

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

Comments & Replies

Comment on Nonleptonic Decays of Charmed Hadrons

A. Pais and V. Rittenberg

Phys. Rev. Lett. 34, 707 (1975)

Comment on Radiative Corrections to $e^{+} e^{-} \to ψ (3105)$

D. R. Yennie

Phys. Rev. Lett. 34, 239 (1975)

Color Gluons and the Decay of the $ψ (3700)$ into $ψ (3100)$

H. Goldberg

Phys. Rev. Lett. 35, 605 (1975)

References (Subscription Required)

Click to Expand

Physical Review Letters

Experimental Observation of a Heavy Particle $J$

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, Sau Lan Wu, and Y. Y. Lee

Phys. Rev. Lett. 33, 1404 – Published 2 December 1974

See Focus story: Landmarks—The Charming Debut of a New Quark

An article within the collection: Letters from the Past - A PRL Retrospective

Abstract

Collections

Letters from the Past - A PRL Retrospective

Focus

Landmarks—The Charming Debut of a New Quark

Published 26 February 2016

Authors & Affiliations

Comments & Replies

Comment on Nonleptonic Decays of Charmed Hadrons

A. Pais and V. Rittenberg

Phys. Rev. Lett. 34, 707 (1975)

Comment on Radiative Corrections to $e^{+} e^{-} \to ψ (3105)$

D. R. Yennie

Phys. Rev. Lett. 34, 239 (1975)

Color Gluons and the Decay of the $ψ (3700)$ into $ψ (3100)$

H. Goldberg

Phys. Rev. Lett. 35, 605 (1975)

References (Subscription Required)

Issue

Access Options

Collection

January 27, 2017

Physical Review Letters

Experimental Observation of a Heavy Particle J

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, Sau Lan Wu, and Y. Y. Lee

Phys. Rev. Lett. 33, 1404 – Published 2 December 1974

See Focus story: Landmarks—The Charming Debut of a New Quark

An article within the collection: Letters from the Past - A PRL Retrospective

Abstract

Collections

Letters from the Past - A PRL Retrospective

Focus

Landmarks—The Charming Debut of a New Quark

Published 26 February 2016

Authors & Affiliations

Comments & Replies

Comment on Nonleptonic Decays of Charmed Hadrons

A. Pais and V. Rittenberg

Phys. Rev. Lett. 34, 707 (1975)

Comment on Radiative Corrections to e+e−→ψ(3105)

D. R. Yennie

Phys. Rev. Lett. 34, 239 (1975)

Color Gluons and the Decay of the ψ(3700) into ψ(3100)

H. Goldberg

Phys. Rev. Lett. 35, 605 (1975)

References (Subscription Required)

Issue

Access Options

Collection

January 27, 2017

Authorization Required

Other Options

Download & Share

Images

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Experimental Observation of a Heavy Particle $J$

Comment on Radiative Corrections to $e^{+} e^{-} \to ψ (3105)$

Color Gluons and the Decay of the $ψ (3700)$ into $ψ (3100)$