Author:
Dudas Emilian,Heurtier Lucien,Mambrini Yann,Zaldivar Bryan
Abstract
Abstract
A general analysis is performed on the dimension-six operators mixing an almost hidden Z′ to the Standard Model (SM), when the Z′ communicates with the SM via heavy mediators. These are fermions charged under both Z′ and the SM, while all SM fermions are neutral under Z′. We classify the operators as a function of the gauge anomalies behaviour of mediators and explicitly compute the dimension-six operators coupling Z′ to gluons, generated atone-loop by chiral but anomaly-free, sets of fermion mediators. We prove that only one operator contribute to the couplings between Z′ charged matter and on-shell gluons. We then make a complete phenomenological analysis of the scenario where the lightest fermion charged under Z′ is the dark matter candidate. Combining results from WMAP/PLANCK data, mono-jet searches at LHC, and direct/indirect dark matter detections restrict considerably the allowed parameter space.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference86 articles.
1. P. Langacker, The physics of heavy Z′ gauge bosons, Rev. Mod. Phys.
81 (2009) 1199 [arXiv:0801.1345] [INSPIRE].
2. T.G. Rizzo, Z′ phenomenology and the LHC, hep-ph/0610104 [INSPIRE].
3. M.S. Carena, A. Daleo, B.A. Dobrescu and T.M. Tait, Z′ gauge bosons at the Tevatron, Phys. Rev.
D 70 (2004) 093009 [hep-ph/0408098] [INSPIRE].
4. E. Salvioni, G. Villadoro and F. Zwirner, Minimal Z′ models: present bounds and early LHC reach, JHEP
11 (2009) 068 [arXiv:0909.1320] [INSPIRE].
5. E. Salvioni, A. Strumia, G. Villadoro and F. Zwirner, Non-universal minimal Z′ models: present bounds and early LHC reach, JHEP
03 (2010) 010 [arXiv:0911.1450] [INSPIRE].
Cited by
49 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献