Standard Model Predictions and New Physics Sensitivity in B->DD Decays

Abstract

An extensive model-independent analysis of B->DD decays is carried out employing SU(3) flavour symmetry, including symmetry-breaking corrections. Several theoretically clean observables are identified which allow for testing the Standard Model. These include the known time-dependent CP asymmetries, the penguin pollution of which can be controlled in this framework, but notably also quasi-isospin relations which are experimentally well accessible and unaffected by symmetry-breaking corrections. Theoretical assumptions can be kept to a minimum and controlled by additional sum rules. Available data are used in global fits to predict the branching ratio for the B0->DsDs decay as well as several CP asymmetries which have not been measured so far, and future prospects are analyzed.

arXiv comment14+5 pages, 7 figures. v2: references added and a few typos corrected

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• SU(3)${}_F$ Analysis for Beauty Baryon Decays
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• The Mathematical Structure of $U$-Spin Amplitude Sum Rules
• Theoretical Prospects for B Physics
• Observation of the $B_s^0\to D^{\ast \pm }{D}^{\mp }$ decay
• Measurement of $CP$ violation in $B^0\to D^{\ast \pm }{D}^{\mp }$ decays
• How to tame penguins: Advancing to high-precision measurements of ${\varphi }_d$ and ${\varphi }_s$
• Mixing and mixing-related CP violation in the B system
• Measurements of $CP$ asymmetries and branching fraction ratios of $B^{-}$ decays to two charm mesons
• Observation of the $B_s^0\to D^{\ast +}{D}^{\ast -}$ decay
• Measurement of $CP$ violation in $B^0\to D^{+}{D}^{-}$ and $B_s^0\to D_s^{+}{D}_s^{-}$ decays
• Monte Carlo Event Generators for Future Lepton Colliders