Measurement of Angular and CP Asymmetries in D0π+π-μ+μ- and D0K+K-μ+μ- Decays

The LHCb Collaboration

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

The first measurements of the forward-backward asymmetry of the dimuon pair (AFB), the triple-product asymmetry (A2φ), and the charge-parity-conjugation asymmetry (ACP), in D0→π+π-μ+μ- and D0→K+K-μ+μ- decays are reported. They are performed using data from proton-proton collisions collected with the LHCb experiment from 2011 to 2016, corresponding to a total integrated luminosity of 5 fb-1. The asymmetries are measured to be AFB(D0→π+π-μ+μ-)=(3.3±3.7±0.6)%, A2φ(D0→π+π-μ+μ-)=(-0.6±3.7±0.6)%, ACP(D0→π+π-μ+μ-)=(4.9±3.8±0.7)%, AFB(D0→K+K-μ+μ-)=(0±11±2)%, A2φ(D0→K+K-μ+μ-)=(9±11±1)%, ACP(D0→K+K-μ+μ-)=(0±11±2)%, where the first uncertainty is statistical and the second systematic. The asymmetries are also measured as a function of the dimuon invariant mass. The results are consistent with the standard model predictions.
Original languageEnglish
Article number091801
Number of pages10
JournalPhysical Review Letters
Volume121
Issue number9
DOIs
Publication statusPublished - 2018
Externally publishedYes

Cite this