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APS » Journals » Phys. Rev. Lett. » Volume 71 » Issue 16
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Phys. Rev. Lett. 71, 2533–2536 (1993)

Does J/ψ→π+π- fix the electromagnetic form factor Fπ(t) at t=MJ/ψ2?

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J. Milana
Department of Physics, University of Maryland, College Park, Maryland 20742

S. Nussinov
Department of Physics, University of Maryland, College Park, Maryland 20742
Department of Physics, Tel-Aviv University, Ramat-Aviv, Tel-Aviv, Israel

M. G. Olsson
Department of Physics, University of Wisconsin(enMadison, Madison, Wiscondin 53706

Received 8 July 1993; published in the issue dated 18 October 1993

We show that the J/ψ→π+π- decay is a reliable source of information for the electromagnetic form factor of the pion at t=MJ/ψ2=9.6 GeV2 by using general arguments to estimate, or rather, put upper bounds on, the background processes that could spoil this extraction. We briefly comment on the significance of the resulting Fπ(MJ/ψ2).

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.71.2533
DOI:
10.1103/PhysRevLett.71.2533
PACS:
13.40.Fn, 13.25.+m, 14.40.Aq
 
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