BELLE2-NOTE-PL-2020-009 |
The Belle II collaboration
22 July 2020
Abstract: The search for invisible decays of the dark photon A′ is enabled by dedicated single photon triggers. A radiative muon pair control sample has been used to measure the efficiency of the level 1 and high-level triggers as a function of energy. This document contains the approved plots and captions.
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Belle II Notes (Public) > Belle II Notes : Approved plots