Author:
Hiller Gudrun,Litim Daniel F.,Moch Kevin
Abstract
AbstractWe search for weakly interacting fixed points in extensions of the minimally supersymmetric standard model (MSSM). Necessary conditions lead to three distinct classes of anomaly-free extensions involving either new quark singlets, new quark doublets, or a fourth generation. While interacting fixed points arise prolifically in asymptotically free theories, their existence is significantly constrained as soon as some of the non-abelian gauge sectors are infrared free. Performing a scan over $$\sim 200$$
∼
200
k different MSSM extensions using matter field multiplicities and the number of superpotential couplings as free parameters, we find mostly infrared conformal fixed points, and a small subset with ultraviolet ones. All settings predict low-scale supersymmetry-breaking and a violation of R-parity. Despite of residual interactions, the running of couplings out of asymptotically safe fixed points is logarithmic as in asymptotic freedom. Some fixed points can be matched to the Standard Model though the matching scale comes out too low. Prospects for higher matching scales and asymptotic safety beyond the MSSM are indicated.
Funder
Science and Technology Facilities Council
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Reference57 articles.
1. Particle Data Group Collaboration, P.A. Zyla et al., Rev. Part. Phys. PTEP 2020(8), 083C01 (2020)
2. R. Barbieri, A. Strumia, The ’LEP paradox’, in 4th Rencontres du Vietnam: Physics at Extreme Energies (Particle Physics and Astrophysics), vol. 7 (2000). arXiv:hep-ph/0007265
3. N. Arkani-Hamed, S. Dimopoulos, Supersymmetric unification without low energy supersymmetry and signatures for fine-tuning at the LHC. JHEP 06, 073 (2005). arXiv:hep-th/0405159
4. H. Baer, V. Barger, S. Salam, D. Sengupta, K. Sinha, Status of weak scale supersymmetry after LHC Run 2 and ton-scale noble liquid WIMP searches. Eur. Phys. J. ST 229, 3085–3141 (2020). arXiv:2002.03013
5. A.D. Bond, D.F. Litim, Theorems for asymptotic safety of gauge theories. Eur. Phys. J. C 77(6), 429 (2017). arXiv:1608.00519
Cited by
2 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