We present a case study for the doubly charged Higgs boson H^(±±)pair production ine^(+)+e^(-)and pp colliders with their subsequent decays to four charged leptons.We consider the Higgs Triplet Model(HTM),wh...We present a case study for the doubly charged Higgs boson H^(±±)pair production ine^(+)+e^(-)and pp colliders with their subsequent decays to four charged leptons.We consider the Higgs Triplet Model(HTM),which is not restricted by the custodial symmetry,and the Minimal Left-Right Symmetric Model(MLRSM).These models include scalar triplets with different complexities of scalar potentials and,because of experimental restrictions,completely different scales of non-standard triplet vacuum expectation values.In both models,a doubly charged Higgs bosonH^(±±)can acquire a mass of hundreds of gigaelectronvolts,which can be probed at the HL-LHC,futuree^(+)+e^(-),and hadron colliders.We take into account a comprehensive set of constraints on the parameters of both models coming from neutrino oscillations,LHC,e^(+)+e^(-),and low-energy lepton flavor violating data and assume the same mass ofH^(±±).Our finding is that theH^(±±)pair production in lepton and hadron colliders is comparable in both models,though more pronounced in the MLRSM.We show that the decay branching ratios can be different within both models,leading to distinguishable four-lepton signals,and that the strongest are 4μevents yielded by theMLRSM.Typically,we find that the MLRSM signals are one order of magnitude larger those in theHTM.For example,the pp→to 4μMLRSM signal for 1 TeVH^(±±)mass results in a clearly detectable significance of S■11for the HL-LHC and S≥290 for the FCC-hh.Finally,we provide quantitative predictions for the dilepton invariant mass distributions and lepton separations,which help to identify non-standard signals.展开更多
基金supported by the Polish National Science Center (NCN) under grant 2015/17/N/ST2/04067COST (European Cooperation in Science and Technology) Action CA16201 PARTICLEFACEco-financed by the funds granted under the Research Excellence Initiative of the University of Silesia in Katowice
文摘We present a case study for the doubly charged Higgs boson H^(±±)pair production ine^(+)+e^(-)and pp colliders with their subsequent decays to four charged leptons.We consider the Higgs Triplet Model(HTM),which is not restricted by the custodial symmetry,and the Minimal Left-Right Symmetric Model(MLRSM).These models include scalar triplets with different complexities of scalar potentials and,because of experimental restrictions,completely different scales of non-standard triplet vacuum expectation values.In both models,a doubly charged Higgs bosonH^(±±)can acquire a mass of hundreds of gigaelectronvolts,which can be probed at the HL-LHC,futuree^(+)+e^(-),and hadron colliders.We take into account a comprehensive set of constraints on the parameters of both models coming from neutrino oscillations,LHC,e^(+)+e^(-),and low-energy lepton flavor violating data and assume the same mass ofH^(±±).Our finding is that theH^(±±)pair production in lepton and hadron colliders is comparable in both models,though more pronounced in the MLRSM.We show that the decay branching ratios can be different within both models,leading to distinguishable four-lepton signals,and that the strongest are 4μevents yielded by theMLRSM.Typically,we find that the MLRSM signals are one order of magnitude larger those in theHTM.For example,the pp→to 4μMLRSM signal for 1 TeVH^(±±)mass results in a clearly detectable significance of S■11for the HL-LHC and S≥290 for the FCC-hh.Finally,we provide quantitative predictions for the dilepton invariant mass distributions and lepton separations,which help to identify non-standard signals.
