Aspects of chargino-neutralino production at the Fermilab Tevatron collider.
Aspects of chargino-neutralino production at the Fermilab Tevatron collider.
复制标题
费米实验室 Tevatron 对撞机中电荷-中性子产生的各个方面。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
X. Tata
中科院分区：
文献类型：
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作者：
H. Baer;Chung Kao;X. Tata
We have used ISAJET 7.01/ISASUSY 1.0 to evaluate the rates and study distributions for trilepton events from the leptonic decays of charginos and neutralinos produced at the Fermilab Tevatron via the reaction $poverline{p}ensuremath{
ightarrow}{stackrel{ifmmode ilde{}else ~{}fi{}}{W}}_{1}{stackrel{ifmmode ilde{}else ~{}fi{}}{Z}}_{2}+X$ for cuts inspired by the CDF and D0 experiments. We find that about 60% of these events do not contain any jets, and so should be easily identifiable over standard model backgrounds from $toverline{t}$ and $mathrm{WZ}$ production, provided that the decay ${stackrel{ifmmode ilde{}else ~{}fi{}}{Z}}_{2}ensuremath{
ightarrow}{stackrel{ifmmode ilde{}else ~{}fi{}}{Z}}_{1}Z$ is kinematically inaccessible. We further show that, with suitable cuts, these backgrounds can be reduced to less than 1-2 fb even if ${n}_{mathrm{jet}}=1$, effectively increasing the SUSY sample by 50%. We confirm that the signal is only rate limited, and that the Fermilab Tevatron after an accumulation of 100 ${mathrm{pb}}^{ensuremath{-}1}$ of integrated luminosity will be able to explore parameters well beyond the range of CERN LEP and, if sleptons are substantially lighter than squarks, close to the reach of LEP 200.
We have used ISAJET 7.01/ISASUSY 1.0 to evaluate the rates and study distributions for trilepton events from the leptonic decays of charginos and neutralinos produced at the Fermilab Tevatron via the reaction $poverline{p}ensuremath{
ightarrow}{stackrel{ifmmode ilde{}else ~{}fi{}}{W}}_{1}{stackrel{ifmmode ilde{}else ~{}fi{}}{Z}}_{2}+X$ for cuts inspired by the CDF and D0 experiments. We find that about 60% of these events do not contain any jets, and so should be easily identifiable over standard model backgrounds from $toverline{t}$ and $mathrm{WZ}$ production, provided that the decay ${stackrel{ifmmode ilde{}else ~{}fi{}}{Z}}_{2}ensuremath{
ightarrow}{stackrel{ifmmode ilde{}else ~{}fi{}}{Z}}_{1}Z$ is kinematically inaccessible. We further show that, with suitable cuts, these backgrounds can be reduced to less than 1-2 fb even if ${n}_{mathrm{jet}}=1$, effectively increasing the SUSY sample by 50%. We confirm that the signal is only rate limited, and that the Fermilab Tevatron after an accumulation of 100 ${mathrm{pb}}^{ensuremath{-}1}$ of integrated luminosity will be able to explore parameters well beyond the range of CERN LEP and, if sleptons are substantially lighter than squarks, close to the reach of LEP 200.