A note on the mass splitting of K*(892)
Abstract
Belle Collaboration reported a new observed value of K*-(892) mass by studying tau --> KS pi nutau decay, which is significantly different from the current world average value given by Particle Data Group 2006. Motivated by this new data, we revisit the issue on the K*0(892)-K*+(892) mass splitting. Our theoretical estimation favors the new measurement by Belle Collaboration. Therefore further experimental efforts are urgently needed to improve our understanding of these issues.
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