Improved Measurement of the Probability for Gluon Splitting into b bbar in Z0 Decays
- SLAC
We have measured gluon splitting into bottom quarks, g {yields} b{bar b}, in hadronic Z{sup 0} decays collected by SLD between 1996 and 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. 4-jet events were identified, and in each event a topological vertex-mass technique was applied to the two jets closest in angle in order to identify them as b or {bar b} jets. The upgraded CCD-based vertex detector gives very high B-tagging efficiency, especially for B hadrons with the low energies typical of this process. We measured the rate of g {yields} b{bar b} production per hadronic event, g{sub b{bar b}}, to be (2.44 {+-} 0.59(stat.) {+-} 0.34(syst.)) x 10{sup -3}.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515;
- OSTI ID:
- 784866
- Report Number(s):
- SLAC-PUB-8737
- Country of Publication:
- United States
- Language:
- English
Similar Records
Improved Measurement of the Probability for Gluon Splitting into b bbar in Z{sub 0} Decays
Measurement of the Probability for Gluon Splitting into b{bar b} in Z{sup 0} Decays
A Preliminary measurement of the gluon splitting rate into b\bar{b} pairs in hadronic Z0 decays
Technical Report
·
Tue Sep 05 20:00:00 EDT 2000
·
OSTI ID:764969
Measurement of the Probability for Gluon Splitting into b{bar b} in Z{sup 0} Decays
Technical Report
·
Thu Jul 08 20:00:00 EDT 1999
·
OSTI ID:10087
A Preliminary measurement of the gluon splitting rate into b\bar{b} pairs in hadronic Z0 decays
Technical Report
·
Wed Jun 09 20:00:00 EDT 1999
·
OSTI ID:10211