We report measurements of the branching fraction and CP asymmetry in B0→π0π0 decays reconstructed at Belle II in an electron-positron collision sample containing 198×106 B¯B pairs. We measure a branching fraction B(B0→π0π0)=(1.38±0.27±0.22)×10−6 and a CP asymmetry ACP(B0→π0π0)=0.14±0.46±0.07, where the first uncertainty is statistical and the second is systematic.
Measurement of the branching fraction and CP asymmetry of B0→π0π0 decays using 198×106 BB¯ pairs in Belle II data
Gabrielli, A.;Ganiev, E.;Lanceri, L.;Manfredi, R.;Mantovano, M.;Raiz, S.;Vitale, L.;
2023-01-01
Abstract
We report measurements of the branching fraction and CP asymmetry in B0→π0π0 decays reconstructed at Belle II in an electron-positron collision sample containing 198×106 B¯B pairs. We measure a branching fraction B(B0→π0π0)=(1.38±0.27±0.22)×10−6 and a CP asymmetry ACP(B0→π0π0)=0.14±0.46±0.07, where the first uncertainty is statistical and the second is systematic.File in questo prodotto:
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