Münster 2017 – scientific programme
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T: Fachverband Teilchenphysik
T 30: Elektroschwache Wechselwirkung 2
T 30.3: Talk
Tuesday, March 28, 2017, 11:30–11:45, JUR 372
Search for rare B→ (π0,η, η′) l+l− decays at Belle — •Maryam Salehi1, Thomas Kuhr2, and Martin Ritter2 — 1University of Malaya — 2Ludwig Maximilians Universitaet
In the Standard Model (SM), the decay B→ (π0,η, η′) l+l− proceeds through the flavor changing neutral current (FCNC) b→ d l+l−. These decays are forbidden at tree level and can only occur in higher orders. Therefore the predicted branching fractions in the SM are of the order of 10−8.
The b→ d l+l− and b→ s l+l− transitions provide a promising avenue to search for New Physics (NP). Amplitudes from these NP contributions can interfere with those from the SM, and significantly enhance the branching fractions from the SM predictions.
We will present a search for rare neutral current decays B→ (π0,η, η′) l+l−, (l=e,µ), using a sample of 772× 106 BB pairs collected with the Belle detector at the e+e− asymmetric collider KEKB.