We report a measurement of the D0 and D+ lifetimes using D0→K−π+ and D+→K−π+π+ decays reconstructed in e+e−→cc¯ data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e+e− collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72  fb−1. The results, τ(D0)=410.5±1.1(stat)±0.8(syst)  fs and τ(D+)=1030.4±4.7(stat)±3.1(syst)  fs, are the most precise to date and are consistent with previous determinations.

Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahmed, H., Aihara, H., et al. (2021). Precise Measurement of the D0 and D+ Lifetimes at Belle II. PHYSICAL REVIEW LETTERS, 127(21) [10.1103/PhysRevLett.127.211801].

Precise Measurement of the D0 and D+ Lifetimes at Belle II

Bernieri, E.
Membro del Collaboration Group
;
Budano, A.
Membro del Collaboration Group
;
Bussino, S.
Membro del Collaboration Group
;
De Pietro, G.
Membro del Collaboration Group
;
Laurenza, M.
Membro del Collaboration Group
;
2021

Abstract

We report a measurement of the D0 and D+ lifetimes using D0→K−π+ and D+→K−π+π+ decays reconstructed in e+e−→cc¯ data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e+e− collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72  fb−1. The results, τ(D0)=410.5±1.1(stat)±0.8(syst)  fs and τ(D+)=1030.4±4.7(stat)±3.1(syst)  fs, are the most precise to date and are consistent with previous determinations.
Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahmed, H., Aihara, H., et al. (2021). Precise Measurement of the D0 and D+ Lifetimes at Belle II. PHYSICAL REVIEW LETTERS, 127(21) [10.1103/PhysRevLett.127.211801].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/394611
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