24-28 September 2019
Russian Academy of Sciences
Europe/Moscow timezone

Search for CPV in tau-> K pi nu at e+ e- colliders, effect of the polarized electron beam

24 Sep 2019, 15:15
Beige Hall (Russian Academy of Sciences)

Beige Hall

Russian Academy of Sciences

Leninsky Prospekt, 32а Moscow 119071 Russian Federation
Talk Physics Physics Day


Denis Epifanov (BINP)


Recent results of high-statistics studies of the tau -> K pi nu decays at e+ e- B factories, Belle and BABAR, are reviewed. Complementary searches for CP symmetry violation in the tau -> K_S pi (>= 0 pi0) nu decays at BABAR and tau -> K_S pi nu at Belle are discussed. The new technique to search for CPV in tau -> K_S pi nu decay is proposed where the CPV phase is extracted in the unbinned maximum likelihood fit of the (tau -> K_S pi nu; tau -> pi pi0 nu) events in the 12-dimensional phase space. The impact of the electron beam polarization at the Super Charm-Tau factory is analyzed.

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