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The CR studies described in this Section are key to validating the |
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background predictions. The CRs are defined in Section~\ref{sec:CR}. |
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background predictions. The CRs are defined in Section~\ref{sec:CRsel}. |
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C1 and CR2 are designed to test the $M_T$ tail in $W +$ jets and |
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CR1 and CR2 are designed to test the $M_T$ tail in $W +$ jets and |
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\ttbar\ respectively. Note that, as explained in Section~\ref{sec:ljbg-general}, |
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these tails are different in the two samples because the off-shell effects |
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are much more pronounced for $W +$ jets. (The s- and t-channel single |
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top has the same $M_T$ tail as \ttbar\ ). To put things in perspective, |
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are much more pronounced for $W +$ jets (the s- and t-channel single |
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top have the same $M_T$ tail as \ttbar). To put things in perspective, |
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keep in mind that these |
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backgrounds are only about 15\% of the total, see Table~\ref{tab:srrawmcyields}. |
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