ccnu
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I am confused about the very step from Eq.(14) to Eq.(15) in the paper
http://arxiv.org/pdf/hep-ph/0308157.pdf
There is one ##ig## in (14), while ##(ig)^2## in (15), where does it come from?
Regards!
http://arxiv.org/pdf/hep-ph/0308157.pdf
There is one ##ig## in (14), while ##(ig)^2## in (15), where does it come from?
Regards!