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New estimate of quark mass parameters
Author(s) -
Alan Katz
Publication year - 1981
Publication title -
physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields
Language(s) - English
Resource type - Journals
eISSN - 1089-4918
pISSN - 0556-2821
DOI - 10.1103/physrevd.23.800
Subject(s) - physics , particle physics , goldstone boson , quark , boson , consistency (knowledge bases) , symmetry breaking , gauge boson , current algebra , bootstrap model , coupling (piping) , gauge theory , mathematical physics , algebra over a field , mathematics , particle decay , pure mathematics , discrete mathematics , mechanical engineering , engineering
An estimate of quark mass parameters suitable for the study of chiral-symmetry-breaking effects is made using exact Goldberger-Treiman relations for the Goldstone bosons which appear in the Weinberg-Salam theory when the gauge coupling is set to zero. The numbers obtained are m/sub u/=13.7 +- 5.9 MeV, m/sub d/=24.7 +- 12.9 MeV, and m/sub s/=497 +- 299 MeV. Consistency of the various Goldberger-Treiman relations with current-algebra mass ratios is discussed. The relationship of these parameters to those obtained in previous evaluations is discussed.

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