A measurement of charm mixing and CP-violating parameters is reported, using anti-B → D0(→ K0S π+ π−) μ− anti-ν_μ X decays reconstructed in proton-proton collisions collected by the LHCb experiment during the years 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb^−1. The measured mixing and CP-violating parameters are x_CP = [4.29 ± 1.48(stat) ± 0.26(syst)] × 10^−3, y_CP = [12.61 ± 3.12(stat) ± 0.83(syst)] × 10^−3, Δx = [−0.77 ± 0.93(stat) ± 0.28(syst)] × 10^−3, Δy = [3.01 ± 1.92(stat) ± 0.26(syst)] × 10^−3. The results are complementary to and consistent with previous measurements. A combination with the recent LHCb analysis of D*+ → D0(→ K0S π+ π−) π+ decays is reported.
Aaij, R., Abdelmotteleb, A., Beteta, C.A., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Model-Independent Measurement of Charm Mixing Parameters in anti-B → D0(→ K0S π+ π−) μ− anti-ν_μ X Decays. PHYSICAL REVIEW D, 108(5), 1-17 [10.1103/PhysRevD.108.052005].
Model-Independent Measurement of Charm Mixing Parameters in anti-B → D0(→ K0S π+ π−) μ− anti-ν_μ X Decays
Aaij, R; Abdelmotteleb, ASW; Beteta, CA; Abudinén, F; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Agapopoulou, C; Aidala, CA; Aiola, S; Ajaltouni, Z; Akar, S; Akiba, K; Albrecht, J; Alessio, F; Alexander, M; Albero, AA; Aliouche, Z; Cartelle, PA; Amalric, R; Amato, S; Amey, JL; Amhis, Y; An, L; Anderlini, L; Andersson, M; Andreianov, A; Andreotti, M; Andreou, D; Ao, D; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Atzeni, M; Audurier, B; Bachmann, S; Bachmayer, M; Back, JJ; Bailly-reyre, A; Rodriguez, PB; Balagura, V; Baldini, W; Leite, JBD; Barbetti, M; Barlow, RJ; Barsuk, S; Barter, W; Bartolini, M; Baryshnikov, F; Basels, JM; Bassi, G; Batsukh, B; Battig, A; Bay, A; Beck, A; Becker, M; Bedeschi, F; Bediaga, IB; Beiter, A; Belavin, V; Belin, S; Bellee, V; Belous, K; Belov, I; Belyaev, I; Benane, G; Bencivenni, G; Ben-Haim, E; Berezhnoy, A; Bernet, R; Andres, SB; Berninghoff, D; Bernstein, HC; Bertella, C; Bertolin, A; Betancourt, C; Betti, F; Bezshyiko, I; Bhasin, S; Bhom, J; 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2023
Abstract
A measurement of charm mixing and CP-violating parameters is reported, using anti-B → D0(→ K0S π+ π−) μ− anti-ν_μ X decays reconstructed in proton-proton collisions collected by the LHCb experiment during the years 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb^−1. The measured mixing and CP-violating parameters are x_CP = [4.29 ± 1.48(stat) ± 0.26(syst)] × 10^−3, y_CP = [12.61 ± 3.12(stat) ± 0.83(syst)] × 10^−3, Δx = [−0.77 ± 0.93(stat) ± 0.28(syst)] × 10^−3, Δy = [3.01 ± 1.92(stat) ± 0.26(syst)] × 10^−3. The results are complementary to and consistent with previous measurements. A combination with the recent LHCb analysis of D*+ → D0(→ K0S π+ π−) π+ decays is reported.
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