TY - JOUR
T1 - Search for δ±± with new decay patterns at the LHC SEARCH for δ±± with NEW DECAY PATTERNS ... CHUAN-HUNG CHEN and TAKAAKI NOMURA
AU - Chen, Chuan Hung
AU - Nomura, Takaaki
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/2/20
Y1 - 2015/2/20
N2 - A search for the doubly charged Higgs (δ±±) is performed in the two-Higgs-doublet extension of the conventional type-II seesaw model. We find that a fantastic mixing effect between the singly charged Higgses of the Higgs doublet and triplet arises from the scalar potential. The mixing leads to the following intriguing phenomena: (i) the mass splittings in triplet particles are magnified; (ii) QCD processes dominate the production of δ±±; and (iii) the new predominant decay channels of δ±± are δ±±→W±[∗]H1(2)±(∗), but not δ±→(-±-±,W±W±), which are usually discussed in the literature. With a luminosity of 40fb-1 and collision energy of 13 TeV, we demonstrate that a δ±± with mass below 330 GeV could be observed at the 5σ level. Moreover, when the luminosity approaches 300fb-1, the observed mass of δ±± could reach up to 450 GeV.
AB - A search for the doubly charged Higgs (δ±±) is performed in the two-Higgs-doublet extension of the conventional type-II seesaw model. We find that a fantastic mixing effect between the singly charged Higgses of the Higgs doublet and triplet arises from the scalar potential. The mixing leads to the following intriguing phenomena: (i) the mass splittings in triplet particles are magnified; (ii) QCD processes dominate the production of δ±±; and (iii) the new predominant decay channels of δ±± are δ±±→W±[∗]H1(2)±(∗), but not δ±→(-±-±,W±W±), which are usually discussed in the literature. With a luminosity of 40fb-1 and collision energy of 13 TeV, we demonstrate that a δ±± with mass below 330 GeV could be observed at the 5σ level. Moreover, when the luminosity approaches 300fb-1, the observed mass of δ±± could reach up to 450 GeV.
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U2 - 10.1103/PhysRevD.91.035023
DO - 10.1103/PhysRevD.91.035023
M3 - Article
AN - SCOPUS:84924281335
SN - 1550-7998
VL - 91
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
M1 - 035023
ER -