Four and two-lepton signals of leptophilic gauge interactions at large colliders

@inproceedings{guila2015FourAT,
  title={Four and two-lepton signals of leptophilic gauge interactions at large colliders},
  author={Francisco del {\'A}guila and Mikael Chala and Jos{\'e} Mar{\'i}a Cerver{\'o} Santiago and Yasuhiro Yamamoto},
  year={2015}
}
Many Standard Model extensions can contribute to four-lepton signals at large colliders. We review the particular case of leptophilic interactions eventually observable at the LHC and the ILC, paying special attention to the addition of a new vector boson coupled to muon minus tau lepton number, $Z'_{\mu - \tau}$, and emphasizing the prospects at a very large hadron collider with $\sqrt s =$ 100 TeV. We also discuss in this case the new contribution to two-lepton (Drell-Yan) production when the… 

Figures from this paper

Model independent constraints on four-lepton operators
A bstractWe obtain constraints on 4-lepton interactions in the effective field theory with dimension-6 operators. To this end, we combine the experimental input from Z boson measurements in LEP-1, W
Collider limits on leptophilic interactions
A bstractLeptophilic interactions can only be observed at the LHC in four-lepton final states. If these interactions are mediated by a resonance in the di-leptonic channel with renormalizable
Constraining four-fermion operators using rare top decays
A bstractNew physics can manifest itself by an appreciable increase of the decay rate of top quarks in rare flavour-changing final states. Exploiting the large top quark production rate at the LHC,
Compilation of low-energy constraints on 4-fermion operators in the SMEFT
A bstractWe compile information from low-energy observables sensitive to flavor-conserving 4-fermion operators with two or four leptons. Our analysis includes data from e+e− colliders, neutrino
Probing μτ flavor-violating solutions for the muon g − 2 anomaly at Belle II
The discrepancy between the measured value and the Standard Model prediction of the muon anomalous magnetic moment is one of the most important issues in the particle physics. It is known that
Exploring beyond the Standard Model: the Heavy and the Dark
Physics beyond the Standard Model can appear as new particles too heavy to be produced in experiments (the energy frontier) or interacting too weakly to be seen in our measurements (the intensity
Effective description of general extensions of the Standard Model: the complete tree-level dictionary
A bstractWe compute all the tree-level contributions to the Wilson coefficients of the dimension-six Standard-Model effective theory in ultraviolet completions with general scalar, spinor and vector

References

SHOWING 1-10 OF 46 REFERENCES
Collider limits on leptophilic interactions
A bstractLeptophilic interactions can only be observed at the LHC in four-lepton final states. If these interactions are mediated by a resonance in the di-leptonic channel with renormalizable
Global constraints on lepton-quark contact interactions
The Large Hadron Collider can do precision physics at a level that is competitive with electroweak precision constraints when probing physics beyond the Standard Model. We present a simple yet
Electroweak limits on general new vector bosons
We study extensions of the Standard Model with general new vector bosons. The full Standard Model gauge symmetry is used to classify the extra vectors and constrain their couplings. We derive the
Distinguishing between lepton number violating scalars at the LHC
Scalars with lepton number violating interactions decaying into lepton pairs, as those mediating the see-saw of type II, always include doubly-charged components. If these are observed at the LHC,
LHC bounds on lepton number violation mediated by doubly and singly-charged scalars
A bstractThe only possible doubly-charged scalar decays into two Standard Model particles are into pairs of same-sign charged leptons, H±± → l±l±, l = e, μ, τ, or gauge bosons, H±± → W±W±; being
Neutrino masses from an A4 symmetry in holographic composite Higgs models
We show that holographic composite Higgs Models with a discrete A4 symmetry can be built, which naturally predict hierarchical charged lepton masses and an approximate tri-bimaximal lepton mixing
Neutrino mixing and masses from a minimum principle
A bstractWe analyze the structure of quark and lepton mass matrices under the hypothesis that they are determined from a minimum principle applied to a generic potential invariant under the [SU(3)]5
...
...