期刊
PHYSICAL REVIEW D
卷 86, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.095010
关键词
-
资金
- U.S. National Science Foundation [PHY-0855561]
- National Natural Science Foundation of China [11245003]
- Division Of Physics
- Direct For Mathematical & Physical Scien [0855561] Funding Source: National Science Foundation
We explore the discovery potential of W' and Z' boson searches for various SU(2)(1) circle times SU(2)(2) circle times U(1)(X) models at the Large Hadron Collider (LHC), after taking into account the constraints from low energy precision measurements and direct searches at both the Tevatron (1.96 TeV) and the LHC (7 TeV). In such models, the W' and Z' bosons emerge after the electroweak symmetry is spontaneously broken. Two patterns of the symmetry breaking are considered in this work: one is SU(2)(L) circle times SU(2)(2) circle times U(1)(X) --> SU(2)(L) circle times U(1)(Y) (breaking pattern I), another is SU(2)(1) circle times SU(2)(2) circle times U(1)(Y) --> SU(2)(L) circle times U(1)(Y) (breaking pattern II). Examining the single production channel of W' and Z' with their subsequent leptonic decays, we find that the probability of detecting W' and Z' bosons in the considered models at the LHC (with 14 TeV) is highly limited by the low energy precision data constraints. We show that observing Z' alone, without seeing a W', does not rule out new physics models with non-Abelian gauge extension, such as the phobic models in breaking pattern I. Models in breaking pattern II would predict the discovery of degenerate W' and Z' bosons at the LHC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据