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2014-10-29 13:34:04 +09:00
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thesis/chapters/chap1_intro.tex
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@@ -58,15 +58,18 @@ observation of CLFV would be a clear signal of new physics beyond the SM.
The COMET (\textbf{CO}herent \textbf{M}uon to \textbf{E}lectron
\textbf{T}ransition) Collaboration aims to probe the conversion of a muon to
an electron in a nucleus field at a sensitivity of $6\times10^{-17}$, pushing
for a four orders of magnitude improvement from the current limit set by the
an electron in a nucleus field at a single event sensitivity of \num{6E-17},
pushing for a four orders of magnitude improvement from the current limit set
by the
SINDRUM-II~\cite{Bertl.etal.2006}. A staging approach is adopted at the COMET
to achieve an intermediate physics result, as well as to gain operational
experience. The first stage, COMET Phase I, is scheduled to start in 2016 with
the goal sensitivity of $3\times 10^{-15}$ after a three-month-running period.
experience. The first stage, COMET Phase I, is scheduled to start data taking
in 2016 with the goal single event sensitivity of $3\times 10^{-15}$ after
a three-month running period.
A cylindrical drift chamber being developed by the Osaka University group
will be the main tracking detector in the COMET Phase I. It is anticipated that
together with the Kyushu University group and the Chinese groups
will be a main tracking detector in the COMET Phase I. It is anticipated that
the chamber will be heavily occupied by protons emitted after nuclear muon
capture in the stopping target, and thus an absorber will be installed to
reduce the proton hit rate to a tolerable level. A study of proton emission