Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders ∗†
Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders ∗†
复制标题
线性对撞机上 Lee-Wick 规范玻色子的独特识别 ††
DOI：
10.1088/1126-6708/2008/01/042
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发表时间：
2007
影响因子：
5.4
通讯作者：
T. Rizzo
中科院分区：
文献类型：
--
作者：
T. Rizzo
Grinstein、O 'Connell和Wise最近提出了一个基于Lee和Wick（LW）思想的标准模型（SM）的扩展，它展示了一种有趣的方法来消除辐射修正引起的对希格斯质量的二次发散贡献。该模型预测存在负范数副本的通常SM字段在TeV尺度与幽灵般的传播和负衰减宽度，但与其他SM样的耦合。在早期的工作中，已经证明了这些模型的规范玻色子扇区中的LW态，虽然很容易观察，但在LHC中不能被唯一地识别出来。在本文中，我们讨论了这个问题是否可以在具有合适质量中心能量范围的e{sup +}e{sup -}对撞机上解决的问题。我们发现，测量的截面和左右极化不对称性与Bhabha散射可以导致一个独特的识别中性电弱规范玻色子的李-威克型。
Grinstein, O'Connell and Wise have recently presented an extension of the Standard Model (SM), based on the ideas of Lee and Wick (LW), which demonstrates an interesting way to remove the quadratically divergent contributions to the Higgs mass induced by radiative corrections. This model predicts the existence of negative-norm copies of the usual SM fields at the TeV scale with ghost-like propagators and negative decay widths, but with otherwise SM-like couplings. In earlier work, it was demonstrated that the LW states in the gauge boson sector of these models, though easy to observe, cannot be uniquely identified as such at the LHC. In this paper, we address the issue of whether or not this problem can be resolved at an e{sup +}e{sup -} collider with a suitable center of mass energy range. We find that measurements of the cross section and the left-right polarization asymmetry associated with Bhabha scattering can lead to a unique identification of the neutral electroweak gauge bosons of the Lee-Wick type.