000002604 001__ 2604
000002604 005__ 20220622162028.0
000002604 037__ $$aBELLE2-NOTE-PL-2021-008
000002604 041__ $$aeng
000002604 088__ $$aBELLE2-NOTE-TE-2020-026
000002604 100__ $$aHenrikas Svidras
000002604 245__ $$aMeasurement of the data to MC ratio of photon reconstruction efficiency of the Belle II calorimeter using radiative muon pair events
000002604 260__ $$a$$c2021-09-17
000002604 300__ $$a7
000002604 520__ $$aThis note presents photon detection efficiency data-to-simulation ratio distributions in the barrel region of the electromagnetic calorimeter of the Belle II detector at the SuperKEKB asymmetric energy electron-positron collider. They are computed using 71.2 fb−1 of experimental data collected by the Belle II detector and the official Belle II Monte Carlo simulation. An initial-state high energy photon from e+e− → μ+μ−(γISR) is searched by predicting its momentum from missing momentum of the dimuon system. The data-to-simulation ratios of the detection efficiency are presented as functions of missing momentum and its angular directions.
000002604 6531_ $$aphoton
000002604 6531_ $$aefficiency
000002604 6531_ $$agamma
000002604 6531_ $$adetection
000002604 6531_ $$aecl
000002604 6531_ $$acalorimeter
000002604 6531_ $$aperformance
000002604 6531_ $$aphotons
000002604 6531_ $$agammas
000002604 700__ $$aMarkus Röhrken
000002604 700__ $$aSimon Wehle
000002604 700__ $$aKerstin Tackmann
000002604 8560_ $$fhenrikas.svidras@desy.de
000002604 8564_ $$uhttps://docs.belle2.org/record/2604/files/BELLE2-NOTE-PL-2021-008.pdf$$yPublic plots$$zUpdating to have correct note number