A measurement of the CP asymmetries S_f and S_fbar in B0 → D∓ π± decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb^−1. The CP asymmetries are measured to be S_f = 0.058 ± 0.020(stat) ± 0.011(syst) and S_fbar = 0.038 ± 0.020(stat) ± 0.007(syst). These results are in agreement with, and more precise than, previous determinations. They are used to constrain angles of the unitarity triangle, |sin (2β + γ)| and γ, to intervals that are consistent with the current world-average values.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albicocco, P., et al. (2018). Measurement of CP Violation in B0 → D∓ π± Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2018(6), 0-22 [10.1007/JHEP06(2018)084].

Measurement of CP Violation in B0 → D∓ π± Decays

Betti, F.;CAPRIOTTI, LORENZO;Carbone, A.;Ferrari, F.;Galli, D.;Marconi, U.;Patrignani, C.;Perazzini, S.;PISANI, FLAVIO;Vagnoni, V.;Zucchelli, S.
2018

Abstract

A measurement of the CP asymmetries S_f and S_fbar in B0 → D∓ π± decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb^−1. The CP asymmetries are measured to be S_f = 0.058 ± 0.020(stat) ± 0.011(syst) and S_fbar = 0.038 ± 0.020(stat) ± 0.007(syst). These results are in agreement with, and more precise than, previous determinations. They are used to constrain angles of the unitarity triangle, |sin (2β + γ)| and γ, to intervals that are consistent with the current world-average values.
2018
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albicocco, P., et al. (2018). Measurement of CP Violation in B0 → D∓ π± Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2018(6), 0-22 [10.1007/JHEP06(2018)084].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albicocco, P.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.; Ali, S.; Alkh...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/640554
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