Narrow resonances in effective field theory
نویسندگان
چکیده
منابع مشابه
Implications of naturalness in effective field theory on the masses of resonances.
Many years ago Weinberg formulated a definition of “naturalness” for effective theories: if an effective theory is to make sense, coefficients must not change too much when the cutoff scale is changed by a factor of order 1. As an example, we consider simple field theories in which an O(N) symmetry spontaneously breaks to O(N − 1). We show that in these theories Weinberg’s criterion for a natur...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2003
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2003.07.049