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Phys. Rev. C 59, R3002–R3004 (1999)

Evidence for the fourth P11 resonance predicted by the constituent quark model

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Simon Capstick*
Department of Physics and Supercomputer Computations Research Institute, Florida State University, Tallahassee, Florida 32306

T.-S. H. Lee†
Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

W. Roberts‡
National Science Foundation, 4201 Wilson Boulevard, Arlington, Virginia 22230

A. Švarc§
Rudjer Bošković Institute, Zagreb, Croatia

Received 1 April 1999; published in the issue dated June 1999

It is pointed out that the third of five low-lying P11 states predicted by a constituent quark model can be identified with the third of four states in a solution from a three-channel analysis by the Zagreb group. This is one of the so-called “missing” resonances, predicted at 1880 MeV. The fit of the Zagreb group to the πN⃗ηN data is the crucial element in finding this fourth resonance in the P11 partial wave.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.59.R3002
DOI:
10.1103/PhysRevC.59.R3002
PACS:
14.20.Gk, 12.39.Pn, 13.30.Eg, 24.85.+p

*Electronic address: capstick@scri.fsu.edu

†Electronic address: lee@anlphy.phy.anl.gov

‡On leave from Department of Physics, Old Dominion University, Norfolk, VA 23529. Electronic address: wroberts@nsf.gov

§Electronic address: svarc@rudjer.irb.hr

 
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