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Chew-Low model for Regge-pole couplings

Dashen, Roger and Frautschi, Steven (1966) Chew-Low model for Regge-pole couplings. Physical Review, 152 (4). pp. 1450-1453. ISSN 0031-899X. http://resolver.caltech.edu/CaltechAUTHORS:DASpr66e

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Abstract

The couplings of a meson trajectory α(t) to the baryon octet B and the decimet Δ are studied in the Chew-Low model. The model predicts ratios, though not absolute magnitudes, for SU(3)-symmetric couplings of the 0- octet Π, 1- octet V, and 2+ octet T trajectories at the small t of either sign for which static kinematics is applicable. For non-spin-flip, the V and T trajectories are predicted to couple to B̅ B like F+1 / 4D, independent of t. For magnetic dipole terms, the Π, V, and T trajectories are all predicted to couple to B̅ B like D+2 / 3F, and to Δ̅ B with the same relative strength as the 0- octet, independent of t. The electric quadrupole couplings of the Π, V, and T trajectories are predicted to be small, independent of t. These results generally agree with existing data, improve Sawyer's explanation of the Johnson-Treiman relations, provide a partial justification of the recent suggestion that V and T couplings are similar, predict that T exchange produces large spin flips, and predict certain ratios such as dσ / dt(π-p→π0n) / (dσ / dt)(π+p→π0N*++).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRev.152.1450DOIUNSPECIFIED
http://link.aps.org/abstract/PR/v152/p1450PublisherUNSPECIFIED
Additional Information:© 1966 by The American Physical Society. Received 5 August 1966. We would like to express our appreciation to Ernest Henley and Boris Jacobsohn for their kind hospitality at the University of Washington Summer Institute for Theoretical Physics, where this work was completed. Work supported in part by the U.S. Atomic Energy Commission. Prepared under Contract No. AT(11-1)-68 for the San Francisco Operations Office, U.S. Atomic Energy Commission. [S.F. was an] Alfred P. Sloan Foundation Fellow.
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Funding AgencyGrant Number
Atomic Energy CommissionAT(11-1)-68
Alfred P. Sloan FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:DASpr66e
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:DASpr66e
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12275
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:14 Nov 2008 04:42
Last Modified:30 Oct 2013 16:49

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