| Autor: |
Aaij, R., Abdelmotteleb, A. S. W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., Adlarson, P., Afsharnia, H., Agapopoulou, C., Aidala, C. A., Ajaltouni, Z., Akar, S., Akiba, K., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z. |
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| Zdroj: |
Journal of High Energy Physics; Dec2023, Vol. 2023 Issue 12, p1-32, 32p |
| Abstrakt: |
A measurement of the CP-violating observables from B± → D*K± and B± → D*π± decays is presented, where D*(D) is an admixture of D*0 and D ¯ ∗ 0 (D0 and D ¯ 0 ) states and is reconstructed through the decay chains D*→ Dπ0/γ and D → K S 0 π + π − / K S 0 K + K − . The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle γ is determined to be 69 − 14 + 13 ∘ using the measured CP-violating observables. The hadronic parameters r B D ∗ K ± , r B D ∗ π ± , δ B D ∗ K ± , δ B D ∗ π ± , which are the ratios and strong phase differences between favoured and suppressed B± decays, are also reported. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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