Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry
(2010) Physical review D — Vol. 82 (2010)
Files
fermilab-pub-10-114-e.pdf
Open Access - Adobe PDF
- 658.5 KB
Details
- Authors
- et. al.
- Abstract
- We measure the charge asymmetry $A$ of like-sign dimuon events in 6.1 fb$^{-1}$ of $p\bar{p}$ collisions marc:recorded with the D0 detector at a center-of-mass energy $\sqrt{s} = 1.96$ TeV at the Fermilab Tevatron collider. From $A$, we extract the like-sign dimuon charge asymmetry in semileptonic $b$-hadron decays: $A^b_{sl} = -0.00957 \pm 0.00251 ({\rm stat}) \pm 0.00146 ({\rm syst})$. This result differs by 3.2 standard deviations from the standard model prediction $A^b_{sl}(SM) = (-2.3^{+0.5}_{-0.6}) \times 10^{-4}$ and provides first evidence of anomalous CP-violation in the mixing of neutral $B$ mesons.
- Affiliations
Citations
Tanasijczuk, A. J., D0, & et al. (2010). Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry. Physical review D, 82. https://doi.org/10.1103/PhysRevD.82.032001 (Original work published 2010)