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Benchmarks for the New-Physics Search through CP Violation in B0?p0KS

journal contribution
posted on 2023-06-08, 01:00 authored by Robert Fleischer, Sebastian JaegerSebastian Jaeger, Dan Pirjol, Jure Zupan
Using isospin relations, we predict the standard model correlation between Sp0KS=(sin?2ß)p0KS and Ap0KS, the mixing-induced and direct CP asymmetries of B0?p0KS. The calculation uses flavor SU(3) only to fix the isospin-3/2 amplitude through the B±?p±p0 branching ratio, and thus has a small irreducible theoretical error. It can reach percent level precision thanks to expected future lattice-QCD progress for the calculation of the relevant SU(3)-breaking form-factor ratio, and serves as a benchmark for new-physics searches. We obtain an interesting picture in the Ap0KS–Sp0KS plane, where the current experimental data show a discrepancy with the standard model, and comment on the direct CP asymmetries of B0?p-K+ and B+?p0K+. A modified electroweak penguin with a large new CP-violating phase can explain the discrepancy and allows us to accommodate also the corresponding data for other b?s penguin-dominated decays.

History

Publication status

  • Published

Journal

Physical Review D

ISSN

1550-7998

Issue

11

Volume

78

Page range

111501-1

Pages

5.0

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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