A measurement of the CP asymmetries Sfand Sf¯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 Sf= 0.058 ± 0.020(stat) ± 0.011(syst) and Sf¯=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.[Figure not available: see fulltext.].

Measurement of CP violation in B0→ D∓π±decays

Brundu, D.;Dettori, F.;Loi, A.;Manca, G.;Oldeman, R.;Saitta, B.;
2018

Abstract

A measurement of the CP asymmetries Sfand Sf¯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 Sf= 0.058 ± 0.020(stat) ± 0.011(syst) and Sf¯=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.[Figure not available: see fulltext.].
B physics; CKM angle gamma; CP violation; Flavor physics; Hadron-Hadron scattering (experiments); Nuclear and high energy physics
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11584/254574
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