Evidence for an anomalous like-sign dimuon charge asymmetry
Conference
·
OSTI ID:989907
The D0 Collaboration has recently measured the charge asymmetry of same-sign dimuon events in 6.1 fb{sup -1} of data collected in p{bar p} collisions at the Fermilab Tevatron collider. This allows the extraction of the same-sign dimuon charge asymmetry in semileptonic b-hadron decays, which is predicted to be extremely small in the standard model. The result is found to differ by 3.2 standard deviations from the standard model value, providing the first evidence for anomalous CP-violation in the mixing of neutral B mesons. The analysis, and the method used to extract the result are described in detail.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 989907
- Report Number(s):
- FERMILAB-CONF-10-351-PPD; TRN: US1007186
- Resource Relation:
- Conference: Presented at Flavor Physics and CP Violation 2010 (FPCP 2010), Turin, Italy, 25-29 May 2010
- Country of Publication:
- United States
- Language:
- English
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