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arXiv 0705.0812hep-ex
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在sqrt(s)=1.96 TeV的ppbar碰撞中寻找第三代轻夸克

Search for third-generation leptoquarks in ppbar collisions at sqrt(s)=1.96 TeV

D0 Collaboration, V. Abazov

摘要:

本文报道了用费米实验室的D 0探测器在sqrt(s)= 1.96TeV的ppbar碰撞中寻找电荷为1/3的第三代细夸克(LQ)的结果。假设第三代轻夸克是成对产生的,衰变为一个τ中微子和一个b夸克,分支分数为B。我们将σ(ppbar->LQLQbar)*B^2的上限作为轻夸克质量M_{LQ}的函数。假设B=1,我们在95%的置信水平上排除了M_{LQ} < 229 GeV的第三代标量细夸克。

英文摘要:

We report on a search for charge-1/3 third-generation leptoquarks (LQ) produced in ppbar collisions at sqrt(s)=1.96 TeV using the D0 detector at Fermilab. Third generation leptoquarks are assumed to be produced in pairs and to decay to a tau neutrino and a b quark with branching fraction B. We place upper limits on sigma(ppbar->LQLQbar)*B^2 as a function of the leptoquark mass M_{LQ}. Assuming B=1, we exclude at the 95% confidence level third-generation scalar leptoquarks with M_{LQ} < 229 GeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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