Abstract
Combining the anomaly and dark matter observables, we study the capability of the LHC to test dark matter, , and a vector-like quark. We focus on a local model with a vector-like doublet quark Q and a complex singlet scalar whose lightest component is a candidate of dark matter. After imposing relevant constraints, we find that the anomaly and the relic abundance of dark matter favor GeV and GeV for 2 TeV and 2 TeV (the heavy partner of ). Current searches for jets and missing transverse momentum at the LHC sizably reduce the mass ranges of the vector-like quark, and is required to be larger than 1.7 TeV. Finally, we discuss the possibility of probing these new particles at the high luminosity LHC via the QCD process followed by , , and then . Taking a benchmark point of = 1.93 TeV, GeV, and 145 GeV, we perform a detailed Monte Carlo simulation and find that this benchmark point can be accessed at the 14 TeV LHC with an integrated luminosity of 3000 fb .
Highlights
The global fits to the experimental data show the new physics (NP) model can explain the anomalies of R(K) and R(K∗) by contributing to C9μ
In Ref. [23], in addition to the U (1)Lμ−Lτ gauge boson Z and a complex singlet S breaking U (1)Lμ−Lτ symmetry, a vector-like SU (2)L doublet quark Q and a complex singlet X are introduced to produce the Z bs coupling large enough to explain the anomalies of R(K(∗))
The model gives the new contributions to Bs − Bs mixing via the box diagrams involving the vector-like quarks, XR and XI, which can be written in the form
Summary
The global fits to the experimental data show the new physics (NP) model can explain the anomalies of R(K) and R(K∗) by contributing to C9μ. [23], in addition to the U (1)Lμ−Lτ gauge boson Z and a complex singlet S breaking U (1)Lμ−Lτ symmetry, a vector-like SU (2)L doublet quark Q and a complex singlet X are introduced to produce the Z bs coupling large enough to explain the anomalies of R(K(∗)). We will combine the b → sμ+μ− anomaly and the experimental data of DM, and study the capability of LHC to test dark matter, Z , and vector-like quark.
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