000002715 001__ 2715
000002715 005__ 20211015174742.0
000002715 037__ $$aBELLE2-CONF-PH-2021-004
000002715 041__ $$aeng
000002715 100__ $$aR. Tiwary
000002715 245__ $$aMeasurements of the branching fractions for B→K∗γ decays at Belle II
000002715 260__ $$a$$c2021-10-10
000002715 300__ $$amult. p
000002715 520__ $$aThis paper reports a study of B→K∗γ decays using 62.8±0.6 fb−1 of data collected during 2019–2020 by the Belle II experiment at the SuperKEKB e+e− asymmetric-energy collider, corresponding to  (68.2±0.8)×10^6 BB events.   We  find  454±28,  50±10,  169±18,  and  160±17  signal events  in  the  decay  modes B0→K∗0[K+π−]γ, B0→K∗0[K0Sπ0]γ, B+→K∗+[K+π0]γ, and B+→K∗+[K+π0]γ, respectively.  The uncertainties quoted for the signal yield are statistical only. We report the branching fractions of these decays: B[B0→K∗0[K+π−]γ] = (4.5±0.3±0.2)×10−5, B[B0→K∗0[K0Sπ0]γ] = (4.4±0.9±0.6)×10−5, B[B+→K∗+[K+π0]γ] = (5.0±0.5±0.4)×10−5, and B[B+→K∗+[K0Sπ+]γ] = (5.4±0.6±0.4)×10−5, where the first uncertainty is statistical, and the second is systematic.  The results are consistent with world-average values.
000002715 6531_ $$aRadiative penguin
000002715 6531_ $$aElectroweak penguin
000002715 6531_ $$aFlavor changing neutral current 
000002715 6531_ $$aFCNC
000002715 6531_ $$aEWP
000002715 700__ $$aR. Mehta
000002715 700__ $$aR. Dhamija
000002715 700__ $$aS Sandilya
000002715 700__ $$aG. B. Mohanty
000002715 8560_ $$frahul.tiwary@tifr.res.in
000002715 8564_ $$uhttps://docs.belle2.org/record/2715/files/BELLE2-CONF-PH-2021-014.pdf