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arXiv 0812.1722hep-ph
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中能β束装置中中微子与W和Z的反常耦合

Probe of anomalous neutrino couplings to W and Z in medium energy setup of a beta-beam facility

A. B. Balantekin, I. Sahin, B. Sahin

摘要:

研究了β束实验中能装置探测中微子-W和中微子-Z耦合的新物理贡献的能力。我们采用有效的拉格朗日方法的Buchmuller和Wyler,并获得95%的置信水平的限制中微子耦合到这些规范玻色子,而不假设的味道普遍性的耦合中微子。我们表明,β束设施可以放置3至20倍的限制比目前的偏离电子中微子耦合在标准模型。

英文摘要:

Capability of medium energy setup of a beta beam experiment to probe new physics contributions to neutrino-W and neutrino-Z couplings are investigated. We employ the effective lagrangian approach of Buchmuller and Wyler and obtain 95% confidence level limits on neutrino couplings to these gauge bosons without assuming the flavor universality of the coupling of neutrinos. We show that a beta beam facility can place 3 to 20 times more restrictive limits than present ones on the deviations from the electron neutrino couplings in the Standard Model.

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