[SLAC] [SLAC Pubs and Reports] SLAC-PUB-7258Lifetime Difference of BS Mesons and its Implications Abstract We discuss the calculation of the width difference $\Delta\Gamma_{B_s}$ between the $B_s$ mass eigenstates to next-to-leading order in the heavy quark expansion. $1/m_b$-corrections are estimated to reduce the leading order result by typically $30\%$. The error of the present estimate $(\Delta\Gamma/\Gamma)_{B_s} = 0.16^{+0.11}_{-0.09}$ could be substantially improved by pinning down the value of $\langle \bar{B}_s |(\bar b_is_i)_{S-P}(\bar b_js_j)_{S-P}| B_s\rangle$ and an accuracy of $10\%$ in $(\Delta\Gamma/\Gamma)_{B_s}$ should eventually be reached. We briefly mention strategies to measure $(\Delta\Gamma/\Gamma)_{B_s}$, and its implications for constraints on $\Delta M_{B_s}$, CKM parameters and the observation of CP violation in untagged $B_s$ samples. (Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.) Full Text PDF slac-pub-7258 (418 KB) Compressed PostScript slac-pub-7258 (33.8 KB) Alternate download methods: old, ancient* *download methods - technical info techexplorer slac-pub-7258 (4.63 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 01 May 2001 @ 12:26 PDT by htmlme.pl
We discuss the calculation of the width difference $\Delta\Gamma_{B_s}$ between the $B_s$ mass eigenstates to next-to-leading order in the heavy quark expansion. $1/m_b$-corrections are estimated to reduce the leading order result by typically $30\%$. The error of the present estimate $(\Delta\Gamma/\Gamma)_{B_s} = 0.16^{+0.11}_{-0.09}$ could be substantially improved by pinning down the value of $\langle \bar{B}_s |(\bar b_is_i)_{S-P}(\bar b_js_j)_{S-P}| B_s\rangle$ and an accuracy of $10\%$ in $(\Delta\Gamma/\Gamma)_{B_s}$ should eventually be reached. We briefly mention strategies to measure $(\Delta\Gamma/\Gamma)_{B_s}$, and its implications for constraints on $\Delta M_{B_s}$, CKM parameters and the observation of CP violation in untagged $B_s$ samples. (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-7258 (418 KB) Compressed PostScript slac-pub-7258 (33.8 KB) Alternate download methods: old, ancient* *download methods - technical info techexplorer slac-pub-7258 (4.63 KB)
Full bibliographic data for this document, including its complete author list, is (or soon will be) available from SLAC's SPIRES-HEP Database.