[SLAC] [SLAC Pubs and Reports] SLAC-PUB-7481A Measurement of Rb Using a Vertex Mass Tag Abstract \noindent We report a new measurement of $R_b=\Gamma_{Z^o\rightarrow b\overline{b}}/ \Gamma_{Z^0\rightarrow hadrons}$ using a double tag technique, where the $b$ hemisphere selection is based on the reconstructed mass of the $B$ hadron decay vertex. The measurement was performed using a sample of 130k hadronic $Z^0$ events, collected with the SLD at the SLC. The method utilizes the 3-D vertexing abilities of the CCD pixel vertex detector and the small stable SLC beams to obtain a high $b$-tagging efficiency and purity. We obtain $R_b=\RBFGAM\pm\DRBFST(stat.)\pm\DRBFSYS(syst.)\pm\DRBFRC(R_c)$. (Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.) Full Text PDF slac-pub-7481 (177 KB) Compressed PostScript slac-pub-7481 (103 KB) Alternate download methods: old, ancient* *download methods - technical info techexplorer slac-pub-7481 (19.7 KB) More Information Full bibliographic data for this document, including its complete author list, is (or soon will be) available from SLAC's SPIRES-HEP Database. Please report problems with this file to posting@slac.stanford.edu. The SLAC preprint inventory is provided by the SLAC Technical Publications Department. Page generated 04 Apr 2001 @ 15:11 PDT by htmlme.pl
\noindent We report a new measurement of $R_b=\Gamma_{Z^o\rightarrow b\overline{b}}/ \Gamma_{Z^0\rightarrow hadrons}$ using a double tag technique, where the $b$ hemisphere selection is based on the reconstructed mass of the $B$ hadron decay vertex. The measurement was performed using a sample of 130k hadronic $Z^0$ events, collected with the SLD at the SLC. The method utilizes the 3-D vertexing abilities of the CCD pixel vertex detector and the small stable SLC beams to obtain a high $b$-tagging efficiency and purity. We obtain $R_b=\RBFGAM\pm\DRBFST(stat.)\pm\DRBFSYS(syst.)\pm\DRBFRC(R_c)$. (Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.)
(Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.)
PDF slac-pub-7481 (177 KB) Compressed PostScript slac-pub-7481 (103 KB) Alternate download methods: old, ancient* *download methods - technical info techexplorer slac-pub-7481 (19.7 KB)
Full bibliographic data for this document, including its complete author list, is (or soon will be) available from SLAC's SPIRES-HEP Database.