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Africa/Cairo
Centre for Theoretical Physics (CTP) - The British University in Egypt
Centre for Theoretical Physics (CTP) - The British University in Egypt
El Sherouk City, Suez Desert Road, Cairo 11837 - P.O. Box 43
Description
Title: Complete vectorlike fourth family and new U(1)′ for muon anomalies
Abstract:
We consider the Standard Model (SM) with the addition of a U(1)′ gauge symmetry and a complete fourth family of quarks and leptons which are vectorlike with respect to the full SU(3)_C×SU(2)_L×U(1)_Y×U(1)′ gauge symmetry. The model provides a unified explanation of experimental anomalies in (g-2)μ as well as b→sℓ^+ℓ^- decays. We find good fits to the deviations from the SM, while at the same time fitting all other SM observables. The model includes a new Z′ gauge boson, a U(1)′-breaking scalar, and vectorlike leptons all with mass of order a few hundred giga-electron-volts.
It is consistent with all currently released high energy experimental data; however, it appears imminently testable with well-designed future searches. Also, we propose a novel possibility to detect a very distinctive signal with more than four muons originating from pair-produced vector-like leptons decaying to a muon-philic Z′ boson. I will also discuss the W boson mass explained by the vectorlike leptons.
This talk is based on 1906.11297, 1911.11075, 2104.04461 and 2205.10480.
Organised by
HEP Group @ CU in collaboration with CTP Group @ BUE
