|Title:||D and K systems: Box and EWP redux||Authors:||Hou, George W.S.||Issue Date:||1-Jan-2019||Journal Volume:||233||Source:||Springer Tracts in Modern Physics||Abstract:||
© 2019, Springer-Verlag GmbH Germany, part of Springer Nature. We shall highlight only D 0 mixing and rare K→ πνν¯ decays. D 0 mixing was observed in 2007, 31 years after the observation of D mesons (see TableÂ 8.1). Being the smallest in (relative) strength, and the last one to be observed, one has come full circle from the original insight by Gell-Mann and PaisÂ , on possible quantum-mechanical mixing in the neutral kaon–anti-kaon system. It also demonstrates that the B factories are charm factories as well (the ∼ 1.3 nb cross section for e + e - → cc¯ production is larger than ∼ 1.1 nb for e + e - → BB¯ production), while the study of charm at DD¯ threshold would still play a key role. Though veiled by hadronic effects, the observation of D 0 mixing opens a new avenue for probing New Physics, especially in the pursuit of CPV at the Super B (rather, Flavor) Factory, and at LHCb.
|Appears in Collections:||物理學系|
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