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arXiv 0803.3256hep-ex
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寻找衰变为顶夸克和底夸克的W素玻色子共振

Search for W-prime boson resonances decaying to a top quark and a bottom quark

D0 Collaboration, V. Abazov

摘要:

我们寻找生产的一个沉重的W素规范玻色子,衰变到第三代夸克在0.9 fb-1的ppbar碰撞在sqrt{s} = 1.96 TeV,收集与D 0探测器在费米实验室Tevatron对撞机。我们发现没有显着过剩的最终状态不变的质量分布和生产截面倍分支分数的上限。对于具有SM耦合的左手W质玻色子,我们设定了731 GeV的质量下限。对于右手的W素玻色子,如果W素玻色子衰变为轻子和夸克,我们设定739 GeV的质量下限,如果W素玻色子只衰变为夸克,则设定768 GeV的质量下限。我们还设置了限制的耦合的W-素玻色子费米子作为其质量的函数。

英文摘要:

We search for the production of a heavy W-prime gauge boson that decays to third generation quarks in 0.9 fb-1 of ppbar collisions at sqrt{s} = 1.96 TeV, collected with the D0 detector at the Fermilab Tevatron collider. We find no significant excess in the final-state invariant mass distribution and set upper limits on the production cross section times branching fraction. For a left-handed W-prime boson with SM couplings, we set a lower mass limit of 731 GeV. For right-handed W-prime bosons, we set lower mass limits of 739 GeV if the W-prime boson decays to both leptons and quarks and 768 GeV if the W-prime boson decays only to quarks. We also set limits on the coupling of the W-prime boson to fermions as a function of its mass.

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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