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Probing CP violation in the heavy neutrino sector at future hadron colliders
by
DrYongchao Zhang
(Washington University in St. Louis)
→
Asia/Shanghai
B105 (CHEP)
B105
CHEP
West Building, School of Physics, PKU
Description
Heavy neutrinos are the essential ingredients of type-I seesaw mechanism, and CP violation in the heavy neutrino sector are crucial to generate the observed baryon asymmetry for TeV-scale resonant leptogenesis. The CP phase can be directly probed at future high-energy hadron colliders, by measuring the charge asymmetry in same-sign dilepton signals which is mediated by the heavy $W_R$ boson. The high-energy LHC could probe a non-vanishing CP phase for a $W_R$ mass up to 7.2 TeV, while at future 100 TeV colliders FCC-hh and SPPC the $W_R$ mass could go up to 26 TeV. The observation of a phase $\lesssim \pi/4$ will falsify resonant leptogenesis.