000001679 001__ 1679
000001679 005__ 20190917024832.0
000001679 037__ $$aBELLE2-TALK-CONF-2019-125
000001679 041__ $$aeng
000001679 088__ $$aBELLE2-TALK-DRAFT-2019-124
000001679 100__ $$aToru Iijima
000001679 245__ $$aBelle II prospect for HVP measurements
000001679 260__ $$aINT-19-74W$$c2019-09-10
000001679 300__ $$amult. p
000001679 500__ $$a30 min
000001679 520__ $$aPrecision measurement of σ(ee → hadron) in Belle II with the ISR method will provide estimate of HVP effects, which is critical inputs to reduce uncertainty in the SM prediction (g-2)μ. The SuperKEKB/Belle II project has just started its data taking runs, and accumulated O(fb-1) data by now. The first look at early Belle II data has shown ; Clear peak of the ρ meson (π+π- mode), Also ω and φ peaks (π+π-π0 mode), Reasonable agreement between data and MC. Small efficiency loss due to Bhabha veto; ≲1% w/ new 3D Bhabha veto logic. O(100)fb-1 data expected within 1 year will provide the first result for HVP. Belle II is also possible to perform the τ → ππ0ν spectrum measurement
000001679 8560_ $$fdoris.yangsoo.kim@desy.de
000001679 8564_ $$uhttps://docs.belle2.org/record/1679/files/BELLE2-TALK-CONF-2019-125.pdf