Measurement of the CKM angle γ in B± → DK± and B± → Dπ± decays with D → K0Sh+h-
A measurement of CP-violating observables is performed using the decays B± → DK± and B± → Dπ±, where the D meson is reconstructed in one of the self-conjugate three-body final states K0Sπ+π− and K0SK+K− (commonly denoted K0Sh+h−). The decays are analysed in bins of the D-decay phase space, leading t...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
19 February 2021
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| In: |
Journal of high energy physics
Year: 2021, Heft: 2, Pages: 1-36 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP02(2021)169 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP02(2021)169 |
| Verfasserangaben: | R. Aaij et al. (The LHCb collaboration) |
| Zusammenfassung: | A measurement of CP-violating observables is performed using the decays B± → DK± and B± → Dπ±, where the D meson is reconstructed in one of the self-conjugate three-body final states K0Sπ+π− and K0SK+K− (commonly denoted K0Sh+h−). The decays are analysed in bins of the D-decay phase space, leading to a measurement that is independent of the modelling of the D-decay amplitude. The observables are inter- preted in terms of the CKM angle γ. Using a data sample corresponding to an integrated luminosity of 9 fb−1 collected in proton-proton collisions at centre-of mass energies of 7, 8, and 13 TeV with the LHCb experiment, γ is measured to be (68.7+5.2−5.1)∘. The hadronic parameters rDKB, rDπB ,δDKB, and δDπB, which are the ratios and strong-phase differences of the suppressed and favoured B± decays, are also reported. |
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| Beschreibung: | Im Titel sind jeweils "±", "+", "-" und "0" hochgestellt, "S" ist tiefgestellt, dabei steht "0" über "S" Gesehen am 15.03.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP02(2021)169 |