Abstract
We measure the charge asymmetry of like-sign dimuon events in of collisions recorded with the D0 detector at a center-of-mass energy at the Fermilab Tevatron collider. From , we extract the like-sign dimuon charge asymmetry in semileptonic -hadron decays: . This result differs by 3.2 standard deviations from the standard model prediction and provides first evidence of anomalous violation in the mixing of neutral mesons.
- Received 16 May 2010
DOI:dx.doi.org/10.1103/PhysRevD.82.032001
© 2010 The American Physical Society
Viewpoint
A new source of violation?
Published 16 August 2010
Searches for new sources of CP violation are a staple of high-energy physics; a recent result presents an effect that could be a sign of new physics beyond the standard model.
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