Measurement of CP Violation in B0 → KS0 π0 Decays at Belle II

TR Number
Date
2023-09-15, 2023-09-14
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Journal ISSN
Volume Title
Publisher
American Physical Society (APS)
Abstract

We report a measurement of the CP-violating parameters C and S in B0→KS0π0 decays at Belle II using a sample of 387×106 BB¯ events recorded in e+e- collisions at a center-of-mass energy corresponding to the ϒ(4S) resonance. These parameters are determined by fitting the proper decay-time distribution of a sample of 415 signal events. We obtain C=-0.04-0.15+0.14±0.05 and S=0.75-0.23+0.20±0.04, where the first uncertainties are statistical and the second are systematic.

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Keywords
Belle II Collaboration, 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 4902 Mathematical Physics, 49 Mathematical Sciences, 51 Physical Sciences, 40 Engineering
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