APS » PROLA » Phys. Rev. Lett. » Volume 91 » Issue 10

Phys. Rev. Lett. 91, 102301 (2003) [4 pages]

Dynamics of the π-p→π0π0n Reaction for pπ-<750  MeV/c
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K. Craig et al. Crystal Ball Collaboration
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Received 14 April 2003; published 2 September 2003

Data are presented for the reaction π-p→π0π0n in the range from threshold to pπ-=750  MeV/c. The systematics of the data and multipole analyses are examined for sensitivity to a f0(600) (“σ”) meson. A one-pion-exchange mechanism is found to be very weak, or absent. The reaction appears to become dominated by sequential π0 decays through the Δ(1232) resonance as the beam momentum increases, along with substantial interference effects from several competing mechanisms.


©2003 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v91/e102301
DOI: 10.1103/PhysRevLett.91.102301
PACS: 13.75.Gx, 13.30.Eg, 14.20.Gk, 14.40.Cs

* Present address: Indiana University Cyclotron Facility, Bloomington, IN 47408, USA.
† Present address: U.S. Department of Energy, Washington, DC 20585, USA.

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