APS » PROLA » Phys. Rev. C » Volume 67 » Issue 6

Phys. Rev. C 67, 068201 (2003) [4 pages]

Measurement of the π-p→3π0n total cross section from threshold to 0.75 GeV/c

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A. Starostin et al. (Crystal Ball Collaboration)
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Received 14 February 2003; published 4 June 2003

We report a new measurement of the π-p→3π0n total cross section from threshold to pπ=0.75 GeV/c. The cross section near the N(1535)1 / 2- resonance is only a few μb after subtracting the large η→3π0 background associated with π-p→ηn. A simple analysis of our data results in the estimated branching fraction B[S11→πN(1440)1 / 2+]=(8±2)%. This is the first such estimate obtained with a three-pion production reaction.


©2003 The American Physical Society

URL: http://link.aps.org/abstract/PRC/v67/e068201
DOI: 10.1103/PhysRevC.67.068201
PACS: 13.30.Eg, 13.75.Gx, 14.20.Gk

* Present address: Indiana University Cyclotron Facility, 2401 Milo B. Sampson Lane, Bloomington, IN 47405.
† Present address: Collider-Accelerator Dept., Brookhaven National Laboratory, Upton, NY 11973.
‡ Present address: TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, Canada V6T 2A3.
§ Present address: Indiana University Cyclotron Facility, 2401 Milo B. Sampson Lane, Bloomington, IN 47405.
** Present address: Nuclear Physics Div., Dept. of Energy, 19901 Germantown Road, Germantown, MD 20874-1290.

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