Heavy Neutrinos, Z' and Higgs Bosons at the LHC: New Particles from an Old Symmetry

• 作者: Shaaban Khalil Stefano Moretti
• 来源期刊: 现代物理(英文)
• 学科: 物理学
• 关键词: B-L HEAVY NEUTRINOS Extra Neutral Gauge BOSON HIGGS BOSONS
• 年，卷（期）: 2013,（1）
• 页码范围: 7-10
• 页数: 4页
• 分类号: O57

摘要

A new era in particle physics is being spurred on by new data from the Large Hadron Collider. Non-vanishing neutrino masses represent firm observational evidence of new physics beyond the Standard Model. An extension of the latter, based on a SU(3)C × SU(2)L × U(1)Y × U(1)B-L symmetry, incorporating an established Baryon minus Lepton number invariance, is proposed as a viable and testable solution to the neutrino mass problem. We argue that LHC data will probe all the new content of this model: heavy neutrinos, an extra gauge boson emerging from spontaneous breaking of the additional gauge group at the TeV scale, onset by a new heavier Higgs boson, also visible at the CERN proton-proton collider. An even more exciting version of this model is the one exploiting Supersymmetry: firstly, it incurporates all its well-known benefits;secondly, it alleviates the flaws of its more minimal realisations. Finally, this model provides a credible cold Dark Matter candidate, the lightest sneutrino, detectable in both underground and collider experiments.