Strong tree level unitarity violations in the extra dimensional standard model with scalars in the bulk
Strong tree level unitarity violations in the extra dimensional standard model with scalars in the bulk
复制标题
具有大量标量的额外维度标准模型中的强树级幺正性违规
DOI：
10.1103/physrevd.67.076010
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发表时间：
2003
影响因子：
5
通讯作者：
Spain.
中科院分区：
文献类型：
--
作者：
S. Curtis;D. Dominici;Jose R. Pelaez Univ.INFN Florence;Italy Univ. Complutense;Madrid;Spain.
我们展示了当标量扇区包含在主体中时，标准模型的压缩额外维度扩展的树级幺正性破坏如何变得更强。当耦合未受到较大卡鲁扎-克莱因能级的抑制时，就会发生这种效应，并且可能对下一代对撞机的现象学产生相关影响。我们还引入了一种简单而通用的形式主义来获得有限能量的幺正界限，同时考虑到包括 Kaluza-Klein 激励塔在内的耦合通道。
We show how the tree-level unitarity violations of compactified extra dimensional extensions of the standard model become much stronger when the scalar sector is included in the bulk. This effect occurs when the couplings are not suppressed for larger Kaluza-Klein levels, and could have relevant consequences for the phenomenology of the next generation of colliders. We also introduce a simple and generic formalism to obtain unitarity bounds for finite energies, taking into account coupled channels including the towers of Kaluza-Klein excitations.