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arXiv 1306.3380hep-ph
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电弱有效算子在单圈上的约束

Constraints on Electroweak Effective Operators at One Loop

Harrison Mebane, Nicolas Greiner, Cen Zhang, Scott Willenbrock

摘要:

我们从精确的电弱数据中推导出九个涉及电弱规范玻色子和希格斯玻色子的六维算子的界。这些操作符中有四个在树级别上起作用,五个只在一个循环中起作用。使用有效场论的全部功率,我们表明,五个回路级运营商的界限比以前声称的要弱得多,因此比从树级过程在高能对撞机的界限弱得多。

英文摘要:

We derive bounds on nine dimension-six operators involving electroweak gauge bosons and the Higgs boson from precision electroweak data. Four of these operators contribute at tree level, and five contribute only at one loop. Using the full power of effective field theory, we show that the bounds on the five loop-level operators are much weaker than previously claimed, and thus much weaker than bounds from tree-level processes at high-energy colliders.

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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