: An absolute measurement of the Λ_{c}^{+} lifetime is reported using Λ_{c}^{+}→pK^{-}π^{+} decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the ϒ(4S) resonance, is 207.2  fb^{-1}. The result, τ(Λ_{c}^{+})=203.20±0.89±0.77  fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.

Abudinén, F., Aggarwal, L., Ahmed, H., Ahn, J.K., Aihara, H., Akopov, N., et al. (2023). Measurement of the Λ_{c}^{+} Lifetime. PHYSICAL REVIEW LETTERS, 130(7), 071802 [10.1103/PhysRevLett.130.071802].

Measurement of the Λ_{c}^{+} Lifetime

Bernieri, E
Membro del Collaboration Group
;
Branchini, P
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
;
Martini, A
Membro del Collaboration Group
;
2023-01-01

Abstract

: An absolute measurement of the Λ_{c}^{+} lifetime is reported using Λ_{c}^{+}→pK^{-}π^{+} decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the ϒ(4S) resonance, is 207.2  fb^{-1}. The result, τ(Λ_{c}^{+})=203.20±0.89±0.77  fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.
2023
Abudinén, F., Aggarwal, L., Ahmed, H., Ahn, J.K., Aihara, H., Akopov, N., et al. (2023). Measurement of the Λ_{c}^{+} Lifetime. PHYSICAL REVIEW LETTERS, 130(7), 071802 [10.1103/PhysRevLett.130.071802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/431492
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