We report a measurement of the D0 and Dþ lifetimes using D0 → Kπ and D+→ Kππ 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 Y(4S) resonance, correspond to an integrated luminosity of 72 fb-1 . The results, tau(D0) = 410.5 ± 1.1 (stat) ± 0.8 (syst) fs and tau(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

Bettarini, S.;Casarosa, G.;Corona, L.;Forti, F.;Paoloni, E.;Rizzo, G.;Tenchini, F.;
2021-01-01

Abstract

We report a measurement of the D0 and Dþ lifetimes using D0 → Kπ and D+→ Kππ 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 Y(4S) resonance, correspond to an integrated luminosity of 72 fb-1 . The results, tau(D0) = 410.5 ± 1.1 (stat) ± 0.8 (syst) fs and tau(D+) = 1030.4 ± 4.7 (stat) ± 3.1 (syst) fs, are the most precise to date and are consistent with previous determinations
2021
Abudinén, F.; Adachi, I.; Adamczyk, K.; Aggarwal, L.; Ahmed, H.; Aihara, H.; Akopov, N.; Aloisio, A.; Anh Ky, N.; Asner, D.  M.; Atmacan, H.; Aushev, ...espandi
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.127.211801.pdf

accesso aperto

Tipologia: Versione finale editoriale
Licenza: Creative commons
Dimensione 309.42 kB
Formato Adobe PDF
309.42 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/11568/1137212
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 6
social impact