Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0 → Λµ+µ-
Journal Article
·
· Physical Review Letters
- et al.
The authors report the first observation of the baryonic flavor-changing neutral current decay Λb0 → Λµ+µ- with 24 signal events and a statistical significance of 5.8 Gaussian standard deviations. This measurement uses a pp¯ collisions data sample corresponding to 6.8 fb-1 at √s = 1.96 TeV collected by the CDF II detector at the Tevatron collider. The total and differential branching ratios for Λb0 → Λµ+µ- are measured. They find Β(Λb0 → Λµ+µ-) = [1.73 ± 0.42(stat) ± 0.55(syst)] x 10-6. They also report the first measurement of the differential branching ratio of Bs0→φµ+µ- using 49 signal events. In addition, they report branching ratios for B+→K+µ+µ-, B0→K0µ+µ- and Β→ K*(892)µ+µ- decays.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- CDF Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1022793
- Alternate ID(s):
- OSTI ID: 1101123
- Report Number(s):
- FERMILAB-PUB-11-328-E; arXiv eprint number arXiv:1107.3753; TRN: US1104152
- Journal Information:
- Physical Review Letters, Vol. 107, Issue 20; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 109 works
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