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Phys. Rev. Lett. 93, 122002 (2004) [4 pages]

Universality of the ρ Meson Coupling in Effective Field Theory

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D. Djukanovic1, M. R. Schindler1, J. Gegelia1,2, G. Japaridze3, and S. Scherer1
1Institut für Kernphysik, Johannes Gutenberg–Universität, D-55099 Mainz, Germany
2High Energy Physics Institute, Tbilisi State University, University Street 9, 380086 Tbilisi, Georgia
3Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, Georgia 30314, USA

Received 5 March 2004; published 16 September 2004

It is shown that both the universal coupling of the ρ meson and the Kawarabayashi-Suzuki-Riadzuddin-Fayyazuddin expression for the magnitude of its coupling constant follow from the requirement that chiral perturbation theory of pions, nucleons, and ρ mesons is a consistent effective field theory. The prerequisite of the derivation is that all ultraviolet divergences can be absorbed in the redefinition of fields and the available parameters of the most general effective Lagrangian.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.122002
DOI:
10.1103/PhysRevLett.93.122002
PACS:
12.39.Fe, 11.10.Gh
 
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