Precise measurement of the D^0D 0 and D^+D + lifetimes at Belle II

Abudinen, F.; et al.,

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Precise measurement of the D^0D 0 and D^+D + lifetimes at Belle II

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Abudinen, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

et al.,
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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https://publications.mppmu.mpg.de/2021/MPP-2021-237/FullText.03216.pdf
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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.211801
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Abudinen, F., & et al. (2021). Precise measurement of the D^0D 0 and D^+D + lifetimes at Belle II. Physical Review Letters, 127, 211801. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2021-237.

Cite as: https://hdl.handle.net/21.11116/0000-000A-1AAC-8

Abstract

We report a measurement of the D 0 and D + lifetimes using D 0 → K−π + and D + → K−π +π + decays reconstructed in e +e − → cc data recorded by the Belle II experiment at the SuperKEKB 4 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 (D 0 ) = 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