Amplitude analysis of the B0(s)→K∗0K¯∗0B(s)0→K∗0K¯∗0 decays and measurement of the branching fraction of the B0→K∗0K¯∗0B0→K∗0K¯∗0 decay / R. Aaij, C. A. Beteta, B. Adeva [et al.]
Уровень набора: Journal of High Energy PhysicsЯзык: английский.Страна: .Резюме или реферат: The B0→K∗0K¯∗0B0→K∗0K¯∗0 and B0s→K∗0K¯∗0Bs0→K∗0K¯∗0 decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1. An untagged and timeintegrated amplitude analysis of B0(s) → (K+π−)(K−π+) decays in two-body invariant mass regions of 150 MeV/c2 around the K∗0 mass is performed. A stronger longitudinal polarisation fraction in the B0→K∗0K¯∗0B0→K∗0K¯∗0 decay, fL = 0.724 ± 0.051 (stat) ± 0.016 (syst), is observed as compared to fL = 0.240 ± 0.031 (stat) ± 0.025 (syst) in the B0s→K∗0K¯∗0Bs0→K∗0K¯∗0 decay. The ratio of branching fractions of the two decays is measured and used to determine B(B0→K∗0K¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7B(B0→K∗0K¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7..Примечания о наличии в документе библиографии/указателя: [References: 44 tit.].Тематика: электронный ресурс | труды учёных ТПУ | B physics | Hadron-Hadron scattering (experiments) Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: 44 tit.]
The B0→K∗0K¯∗0B0→K∗0K¯∗0 and B0s→K∗0K¯∗0Bs0→K∗0K¯∗0 decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1. An untagged and timeintegrated amplitude analysis of B0(s) → (K+π−)(K−π+) decays in two-body invariant mass regions of 150 MeV/c2 around the K∗0 mass is performed. A stronger longitudinal polarisation fraction in the B0→K∗0K¯∗0B0→K∗0K¯∗0 decay, fL = 0.724 ± 0.051 (stat) ± 0.016 (syst), is observed as compared to fL = 0.240 ± 0.031 (stat) ± 0.025 (syst) in the B0s→K∗0K¯∗0Bs0→K∗0K¯∗0 decay. The ratio of branching fractions of the two decays is measured and used to determine B(B0→K∗0K¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7B(B0→K∗0K¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7.
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