Extracting and using photon polarization information in radiative B decays

Yuval Grossman, Dan Pirjol

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


We discuss the uses of conversion electron pairs for extracting photon polarization information in weak radiative B decay. Both cases of leptons produced through a virtual and real photon are considered. Measurements of the angular correlation between the (K π) and (e+e-) decay planes in B → K*(→ Kπ)γ(*) (→ e+e-) decays can be used to determine the helicity amplitudes in the radiative B → K*γ decay. A large right-handed helicity amplitude in B̄ decays is a signal of new physics. The time-dependent CP asymmetry in the B0 decay angular correlation is shown to measure sin 2β and cos 2β with little hadronic uncertainty.

Original languageEnglish
Pages (from-to)1-18
Number of pages18
JournalJournal of High Energy Physics
Issue number6
StatePublished - 2000
Externally publishedYes


FundersFunder number
Directorate for Mathematical and Physical Sciences9457911


    • B-Physics
    • CP-violation
    • Quark Masses and SM Parameters


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