We present evidence for D0-D̄0 mixing in D0→K+π- decays from 384fb-1 of e+e- colliding-beam data recorded near s=10.6GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x′2=[-0.22±0.30(stat)±0. 21(syst)]×10-3 and y′=[9.7±4.4(stat)±3.1(syst)] ×10-3 and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure RD, the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303±0.016(stat)±0.010(syst)]%. We find no evidence for CP violation.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Evidence for D0-D̄0 mixing. PHYSICAL REVIEW LETTERS, 98(21) [10.1103/PhysRevLett.98.211802].

Evidence for D0-D̄0 mixing

CARPINELLI, Massimo;
2007

Abstract

We present evidence for D0-D̄0 mixing in D0→K+π- decays from 384fb-1 of e+e- colliding-beam data recorded near s=10.6GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x′2=[-0.22±0.30(stat)±0. 21(syst)]×10-3 and y′=[9.7±4.4(stat)±3.1(syst)] ×10-3 and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure RD, the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303±0.016(stat)±0.010(syst)]%. We find no evidence for CP violation.
Articolo in rivista - Articolo scientifico
Colliding beam accelerators; Correlation theory; Data recording; Parameter estimation; Radiation detectors; Standards; Doubly Cabibbo-suppressed; Mixing hypothesis; Standard deviations; High energy physics;
English
2007
98
21
211802
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Evidence for D0-D̄0 mixing. PHYSICAL REVIEW LETTERS, 98(21) [10.1103/PhysRevLett.98.211802].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/10281/389655
Citazioni
  • Scopus 301
  • ???jsp.display-item.citation.isi??? 210
Social impact