Evidence for an anomalous like-sign dimuon charge asymmetry
Conference
·
· Nucl.Phys.Proc.Suppl.210-211:141-146,2011
We present a measurement of the like-sign dimuon asymmetry in semileptonic b-hadron decays, performed using 6.1 fb{sup -1} of p{bar p} collisions recorded with the D0 detector at a center-of-mass energy {radical}s = 1.96 TeV at the Fermilab Tevatron collider. This measured value is A{sub sl}{sup b} = [-0.957 {+-} 0.251 (stat) {+-} 0.146 (syst)] %, which disagrees with the Standard Model prediction at a statistical level of 3.2 {sigma}, and provides the first evidence of anomalous CP violation in the mixing of neutral B mesons.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1016221
- Report Number(s):
- FERMILAB-CONF-11-214-E; TRN: US1103028
- Journal Information:
- Nucl.Phys.Proc.Suppl.210-211:141-146,2011, Journal Name: Nucl.Phys.Proc.Suppl.210-211:141-146,2011
- Country of Publication:
- United States
- Language:
- English
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