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 (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.

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

Rizzo G.;
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 (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.
File in questo prodotto:
File Dimensione Formato  
Precise Measurement of the D0 and D+ Lifetimes at Belle II.pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 296.35 kB
Formato Adobe PDF
296.35 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/60496
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
social impact