研究了费米实验室Tevatron对撞机D 0实验收集的积分光度的过程$p\bar{p} \rightarrow WZ \rightarrow \ellν\ell^+\ell-$和$p\bar{p} \rightarrow ZZ \rightarrow \ell^+\ell^-ν\barν, where $ \ell $ = $ e $ or $ μ $. Using 8.6 fb$ ^{-1}，我们测得$WZ$产生截面为4.50 $^{+0.63}_{-0.66} pb which is consistent with, but slightly above a prediction of the standard model. The ZZ cross section is measured to be 1.64 $ \pm $ 0.46 pb, in agreement with a prediction of the standard model. Combination with an earlier analysis of the $ $ 0.46 pb, in agreement with a prediction of the standard model. Combination with an earlier analysis of the $ ZZ \rightarrow \ell^+ \ell^- \ell^+ \ell^- $ channel yields a $ ZZ $ cross section of 1.44$ ^{+0.35}_{-0.34}$ pb。
英文摘要：
We study the processes $p\bar{p} \rightarrow WZ \rightarrow \ellν\ell^+\ell-$ and $p\bar{p} \rightarrow ZZ \rightarrow \ell^+\ell^-ν\barν, where $\ell$ = $e$ or $μ$. Using 8.6 fb$^{-1} of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron collider, we measure the $WZ$ production cross section to be 4.50$^{+0.63}_{-0.66} pb which is consistent with, but slightly above a prediction of the standard model. The ZZ cross section is measured to be 1.64 $\pm$ 0.46 pb, in agreement with a prediction of the standard model. Combination with an earlier analysis of the $ZZ \rightarrow \ell^+\ell^-\ell^+\ell^-$ channel yields a $ZZ$ cross section of 1.44$^{+0.35}_{-0.34}$ pb.
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Search for the standard model Higgs boson decaying to a W pair in the fully leptonic final state in pp collisions at sqrt(s) = 7 TeV
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The phenomenon of $B^0_q$-$\bar{B}^0_q$ mixing ($q=d,s$) provides a sensitive probe for physics beyond the Standard Model. We have a careful look at the determination of the Unitarity Triangle apex, which is needed for the Standard Model predictions of the $B_q$ mixing parameters, and explore how much space for New Physics is left through the current data. We study the impact of tensions between inclusive and exclusive determinations of the CKM matrix elements $|V_{ub}|$ and $|V_{cb}|$, and focus on the $γ$ angle extraction. We present various future scenarios and discuss the application of th…
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