Speaker
Dr
威 刘
(南京理工大学)
Description
If the masses of at least two generations of right-handed neutrinos (RHNs)
are near-degenerate, the scale of leptogenesis can be as low as ∼ 100 GeV. In this work,
we study probing such resonant leptogenesis in the B B L model at the LHC and future
multi-TeV muon colliders via the process Z' → NN → l± l± + jets, with Z0
the U(1)B-L
gauge boson and N the RHN. The same-sign dilepton feature of the signal makes it almost
background-free, while the event number difference between positive and negative leptons
is a hint for CP violation, which is a key ingredient of leptogenesis. We found that resonant
leptogenesis can be tested at the HL-LHC for MZ' up to 12 TeV, while at a 10 (30) TeV
muon collider the reach can be up to MZ' ∼ 30 (100) TeV via the off-shell production of
Z'.
| Presentation type | Oral |
|---|
Primary authors
Dr
威 刘
(南京理工大学)
Dr
柯盼 谢
(Department of Physics and Astronomy, University of Nebraska, Lincoln)
