ITP OpenIR  > 理论物理所2015年知识产出
LHC phenomenology of the type II seesaw mechanism: Nondegenerate case
Han, ZL; Ding, R; Liao, Y; Han, ZL (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China.
2015
发表期刊PHYSICAL REVIEW D
卷号91期号:9页码:93006
文章类型Article
摘要In this paper, we thoroughly investigate the LHC phenomenology of the type II seesaw mechanism for neutrino masses in the nondegenerate case where the triplet scalars of various charge ( H-+/-+/-, H-+/-, H-0, A(0)) have different masses. Compared with the degenerate case, the cascade decays of scalars lead to many new, interesting signal channels. In the positive scenario where M-H +/-+/- < M-H +/- < M-H0/A0, the four- lepton signal is still the most promising discovery channel for the doubly charged scalars H-+/-+/-. The five- lepton signal is crucial to probe the mass spectrum of the scalars, for which, for example, a 5 sigma reach at 14 TeV LHC for M-H +/- = 430 GeV with M-H +/-+/- = 400 GeV requires an integrated luminosity of 76 fb(-1). And the six- lepton signal can be used to probe the neutral scalars H-0/A(0), which are usually hard to detect in the degenerate case. In the negative scenario where M-H +/-+/- > M-H +/- > M-H0/A0, the detection of H-+/-+/- is more challenging, when the cascade decay H-+/-+/- -> (HW +/-)-W-+/-* is dominant. The most important channel is the associated (HH0)-H-+/-/A(0) production in the final state l(+/-)is not an element of(T)b (b) over barb (b) over bar, which requires a luminosity of 109 fb(-1) for a 5 sigma discovery, while the final state l(+/-)is not an element of(T)b (b) over bar tau(+)tau(-) is less promising. Moreover, the associated H(0)A(0) production can give the same signals as the standard model Higgs pair production. With a much larger cross section, the H(0)A(0) production in the final state b (b) over bar tau(+)tau(-) could reach 3 sigma significance at 14 TeV LHC with a luminosity of 300 fb(-1). In summary, with an integrated luminosity similar to O(500 fb(-1)), the triplet scalars can be fully reconstructed at 14 TeV LHC in the negative scenario.
学科领域Astronomy & Astrophysics ; Physics
资助者CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; [NSFC-11025525] ; [NSFC-11025525] ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; [NSFC-11025525] ; [NSFC-11025525]
DOIhttp://dx.doi.org/10.1103/PhysRevD.91.093006
关键词[WOS]MAJORANA NEUTRINO MASSES ; CHARGED HIGGS BOSONS ; LEFT-RIGHT SYMMETRY ; PAIR PRODUCTION ; ROOT-S=7 TEV ; FINAL-STATES ; SEARCH ; PARITY ; SCALE ; VIOLATION
收录类别SCI
语种英语
资助者CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; [NSFC-11025525] ; [NSFC-11025525] ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; [NSFC-11025525] ; [NSFC-11025525]
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21000
专题理论物理所2015年知识产出
通讯作者Han, ZL (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China.
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Han, ZL,Ding, R,Liao, Y,et al. LHC phenomenology of the type II seesaw mechanism: Nondegenerate case[J]. PHYSICAL REVIEW D,2015,91(9):93006.
APA Han, ZL,Ding, R,Liao, Y,&Han, ZL .(2015).LHC phenomenology of the type II seesaw mechanism: Nondegenerate case.PHYSICAL REVIEW D,91(9),93006.
MLA Han, ZL,et al."LHC phenomenology of the type II seesaw mechanism: Nondegenerate case".PHYSICAL REVIEW D 91.9(2015):93006.
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