Monday 03 March 2025
The quest for new physics beyond the Standard Model has been an ongoing endeavour in the world of particle physics. Recently, a team of researchers has made significant progress in this area by investigating the possibility of probing triple-gauge couplings at hadron and lepton colliders.
Triple-gauge couplings refer to the interactions between three gauge bosons – particles that carry fundamental forces such as electromagnetism and the weak nuclear force. These couplings are a key aspect of the Standard Model, but they can also be used to search for new physics beyond this framework.
The researchers focused on an Abelian gauge symmetry U(1)’µ under which second-generation leptons are axially charged. This leads to an effective field theory that consists of the Standard Model plus an additional massive Z’ gauge boson. The triple-gauge couplings involving the Z’ and Electroweak SM gauge bosons via mixed gauge anomalies were calculated.
The team found that the LHC, despite its high luminosity, is unable to probe these anomalous couplings due to the small signals provided in comparison to the large Standard Model backgrounds. However, they discovered that a 100 TeV collider at its maximum considered luminosity of 20 ab-1 could potentially probe these couplings.
Lepton colliders, such as a muon collider and an e+e- collider like CLIC, were also found to be well-suited for probing these anomalous couplings. A muon collider running at the Z’ resonance and an electron-positron collider like CLIC could complement each other in their ability to probe these couplings.
The researchers used a combination of theoretical calculations and Monte Carlo simulations to study the capabilities of different colliders. They found that the high energy leptonic collisions, such as those at a 100 TeV collider, can provide valuable information about the triple-gauge couplings.
The results of this research have significant implications for our understanding of particle physics beyond the Standard Model. The discovery of anomalous triple-gauge couplings could be evidence of new physics, such as the existence of additional gauge bosons or fermions. This would require a re-evaluation of our current understanding of the universe and the forces that govern it.
The future of particle physics is likely to involve further investigations into the properties of these couplings.
Cite this article: “Probing Anomalous Triple-Gauge Couplings at Future Colliders”, The Science Archive, 2025.
Particle Physics, Triple-Gauge Couplings, Standard Model, Hadron Colliders, Lepton Colliders, Gauge Bosons, Electroweak Force, Massive Z’ Gauge Boson, Monte Carlo Simulations, New Physics Beyond Sm
