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Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 54: Seltene Zerfälle und BSM im Flavourbereich

T 54.3: Talk

Tuesday, March 1, 2016, 17:20–17:35, VMP8 SR 05

Background studies of BK(*) ν ν decays at Belle II — •James Kahn and Thomas Kuhr for the Belle II collaboration — Ludwig-Maximilians University Munich, Germany

The BK(*) ν ν decays provide some of the cleanest experimentally measurable instances of the flavour changing neutral current process bs ν ν, which presents an excellent opportunity to investigate physics beyond the standard model. The missing energies of the two neutrinos make the measurement experimentally challenging and require the full reconstruction of the spectator B meson in e+ e → Υ(4S) → B B events. Observation of the BK(*) ν ν decays will only become possible with the large data set that will be collected at the upgraded Belle II detector at the SuperKEKB accelerator in Tsukuba, Japan. A challenge of this decay analysis will be the understanding and suppression of the backgrounds. New techniques will be required to identify and simulate background events in sufficient volumes for statistical analysis.

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