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Observation of CP violation in two-body B(s)0 -meson decays to charged pions and kaons

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In this proceeding, we report the recent studies in charmless two-body decays from B factories and Belle II prospects on direct CP violation in charmless B decays. We present the first observation of the decay B 0 s → K 0K 0 using a dataset of 121.4 f b−1 collected at the ϒ(5S) resonance with the Belle detector. We also discuss the first evidence of B 0 → ηη. Being also related to direct CP asymmetry, we present a preliminary measurement of the branching fraction and CP asymmetry of B + → K +K −π + decays. Furthermore, we discuss the future prospects on the studies of direct CP violation in charmless B decays at the coming Belle II experiment.

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Journal of High Energy Physics, 2021, vol. 2021, p. 1-11

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cc-by (c) Alfonso Albero, Alejandro et al., 2021

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Large Hadron Collider (France and Switzerland)

# metadata.dc.title[].value
Observation of CP violation in two-body B(s)0 -meson decays to charged pions and kaons