000003235 001__ 3235
000003235 005__ 20220919102600.0
000003235 037__ $$aBELLE2-CONF-PH-2022-008
000003235 041__ $$aeng
000003235 100__ $$aThibaud Humair
000003235 245__ $$aMeasurement of the branching fractions and CP asymmetries of B+ → π+π0 and B+ → K+π0 decays in 2019-2021 Belle II data
000003235 260__ $$a$$c2022-09-19
000003235 300__ $$amult. p
000003235 520__ $$aWe determine the branching fractions B and CP asymmetries ACP of the decays B+ → π+π0 and B+ → K+π0. The results are based on a data set containing 198 million bottom-antibottom meson pairs corresponding to an integrated luminosity of 190 fb−1 recorded by the Belle II detector in energy-asymmetric electron-positron collisions at the Υ (4S) resonance. We measure B(B+ → π+π0) = (6.12 ± 0.53 ± 0.53) × 10−6, B(B+ → K+π0) = (14.30 ± 0.69 ± 0.79) × 10−6, ACP (B+ → π+π0) = −0.085 ± 0.085 ± 0.019, ACP (B+ → K+π0) = 0.014 ± 0.047 ± 0.010, where the first uncertainties are statistical and the second are systematic. These results improve a previous Belle II measurement and agree with the world averages.
000003235 700__ $$aHans-Günther Moser
000003235 700__ $$aJustin Skorupa 
000003235 8560_ $$fjskorupa@mpp.mpg.de
000003235 8564_ $$uhttps://docs.belle2.org/record/3235/files/%20BELLE2-CONF-PH-2022-008.pdf