Using U Spin to Extract gamma from Charmless B -> PPP Decays

Bhubanjyoti Bhattacharya; David London

Using U Spin to Extract gamma from Charmless B -> PPP Decays

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arxiv 1503.00737 v2 pith:A7SN2FGS submitted 2015-03-02 hep-ph hep-ex

Bhubanjyoti Bhattacharya , David London This is my paper · ORCID

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keywords decaysthree-bodyanalysesasymmetriescharmlessgammamethodu-spin

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Some years ago, a method was proposed for measuring the CP-violating phase gamma using pairs of two-body decays that are related by U-spin reflection (d <-> s). In this paper we adapt this method to charmless B -> PPP decays. Time-dependent Dalitz-plot analyses of these three-body decays are required for the measurement of the mixing-induced CP asymmetries. However, isobar analyses of the decay amplitudes are not necessary. A potential advantage of using three-body decays is that the effects of U-spin breaking may be reduced by averaging over the Dalitz plot. This can be tested independently using the measurements of direct CP asymmetries and branching ratios in three-body charged B decays.

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Implications on CP violation of charmless three body decays of bottom baryon from the U-spin analysis
hep-ph 2024-11 conditional novelty 5.0 of 10

U-spin symmetry converts recent LHCb CP-violation measurements in Lambda_b charmless three-body decays into CP-asymmetry predictions for Xi_b^0 and Sigma^0 channels, plus a null test for the Standard Model.

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