Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states
| Parent link: | Journal of High Energy Physics Vol. 2022, iss. 7.— 2022.— [99, 23 p.] |
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| Corporate Authors: | , |
| Other Authors: | , , , , , |
| Summary: | Title screen A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B± → Dh± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K±π∓π0; π+π−π0; K+K−π0 and the suppressed π±K∓π0 combination. The mode where a large CP asymmetry is expected, B± → [π±K∓π0]DK±, is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B± → [K±π∓π0]DK±, is RADS(K) = (1.27 ± 0.16 ± 0.02) × 10−2. Evidence for a large CP asymmetry is also seen: AADS(K) = −0.38 ± 0.12 ± 0.02. Constraints on the CKM angle γ are calculated from the eleven reported observables. |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://earchive.tpu.ru/handle/11683/80980 https://doi.org/10.1007/JHEP07(2022)099 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668900 |