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arXiv 1108.2702hep-phhep-th
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重Majorana费米子的有效场论

Effective Field Theory for a Heavy Majorana Fermion

Karoline Kopp, Takemichi Okui

摘要:

我们制定了一个有效的理论系统包含一个沉重的马约拉纳费米子,如长寿命的胶子的束缚态。这个“马约拉纳HQET”具有相同的自由度的研究狄拉克HQET。尽管马约拉纳费米子基本上不存在U(1),但它仍然遵守涌现的U(1)对称性。重新参数化不变性在两个HQRST中的工作相同。值得注意的是,虽然狄拉克HQET可能是或可能不是电荷共轭对称的,但在所有马约拉纳HQET中出现了电荷共轭对称,可能提供低能量探针来区分这两种理论。

英文摘要:

We formulate an effective theory for systems containing a heavy Majorana fermion, such as bound states of a long-lived gluino. This "Majorana HQET" has the same degrees of freedom as the well-studied Dirac HQET. It respects an emergent U(1) symmetry despite the fundamental absence of a U(1) for Majorana fermions. Reparameterization invariance works identically in the two HQETs. Remarkably, while a Dirac HQET may or may not be charge conjugation symmetric, a charge conjugation symmetry emerges in all Majorana HQETs, potentially offering low energy probes to distinguish the two theories.

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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