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- W2169777655 abstract "The effects of intermediate charmed mesons on charmonium transitions with the emission of one pion or eta meson are studied systematically. Based on a non-relativistic effective field theory we show that charmed meson loops are enhanced compared to the corresponding tree-level contributions for transitions between two S-wave charmonia as well as for transitions between two P-wave charmonia. On the contrary, for the transitions between one S-wave and one P-wave charmonium state, the loops need to be analyzed case by case and often appear to be suppressed. Extending these considerations to the b-quark sector, we propose a new method to extract the light quark mass ratio m u /m d using the ϒ(4S) → h b π 0 (η) bottomonia transitions." @default.
- W2169777655 created "2016-06-24" @default.
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- W2169777655 date "2011-01-01" @default.
- W2169777655 modified "2023-09-24" @default.
- W2169777655 title "CHARMONIUM AND BOTTOMONIUM TRANSITIONS FROM EFFECTIVE FIELD THEORY" @default.
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- W2169777655 doi "https://doi.org/10.1142/s2010194511000535" @default.
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