TY - JOUR
T1 - Extracting and using photon polarization information in radiative B decays
AU - Grossman, Yuval
AU - Pirjol, Dan
PY - 2000
Y1 - 2000
N2 - 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.
AB - 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.
KW - B-Physics
KW - CP-violation
KW - Quark Masses and SM Parameters
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U2 - 10.1088/1126-6708/2000/06/029
DO - 10.1088/1126-6708/2000/06/029
M3 - Article
AN - SCOPUS:7044222504
SN - 1029-8479
VL - 4
SP - 1
EP - 18
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 6
ER -