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

Date Issued
19-11-2021
Author(s)
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, V.
Babu, V.
Bacher, S.
Bae, H.
Baehr, S.
Bahinipati, S.
Bambade, P.
Banerjee, Sw
Bansal, S.
Barrett, M.
Baudot, J.
Bauer, M.
Baur, A.
Becker, J.
Behera, P. K.
Bennett, J. V.
Bernieri, E.
Bernlochner, F. U.
Bertemes, M.
Bertholet, E.
Bessner, M.
Bettarini, S.
Bhardwaj, V.
Bianchi, F.
Bilka, T.
Bilokin, S.
Biswas, D.
Bobrov, A.
Bodrov, D.
Bolz, A.
Bozek, A.
BraÄ ko, M.
Branchini, P.
Braun, N.
Briere, R. A.
Browder, T. E.
Budano, A.
Bussino, S.
Campajola, M.
Cao, L.
Casarosa, G.
Cecchi, C.
ÄŒervenkov, D.
Chang, M. C.
Chang, P.
Cheaib, R.
Chekelian, V.
Chen, C.
Chen, Y. T.
Cheon, B. G.
Chilikin, K.
Chirapatpimol, K.
Cho, H. E.
Cho, K.
Cho, S. J.
Choi, S. K.
Choudhury, S.
Cinabro, D.
Corona, L.
Cremaldi, L. M.
Cunliffe, S.
Czank, T.
Dattola, F.
De La Cruz-Burelo, E.
De Marino, G.
De Nardo, G.
De Pietro, G.
De Sangro, R.
Destefanis, M.
Dey, S.
De Yta-Hernandez, A.
Di Canto, A.
Di Capua, F.
Dingfelder, J.
DoleŽal, Z.
Domínguez Jiménez, I.
Dong, T. V.
Dorigo, M.
Dort, K.
Dossett, D.
Dubey, S.
Duell, S.
Dujany, G.
Ecker, P.
Epifanov, D.
Ferber, T.
Ferlewicz, D.
Finocchiaro, G.
Flood, K.
DOI
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.
Volume
127