January, 2005 Kowalewski --- Perugia lectures 133 Isospin analysis:  eff   Gronau-London isospin analysis: J=0 two-pion state has no I=1, so B  can be described in terms of two I-spin amplitudes A +0 has no gluonic penguin  base is common to B + and B - Grossman-Quinn bound: Useful if  0  0 is small; doesn't require  0  0 to be tagged since uses sum 2
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