Knowledge Management System of Institute of Theoretical Physics, CAS
| Han, ZL; Ding, R; Liao, Y; Han, ZL (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China. | |
| LHC phenomenology of the type II seesaw mechanism: Nondegenerate case | |
| Source Publication | PHYSICAL REVIEW D
 |
| Language | 英语 |
| Abstract | 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. |
| 2015 | |
| Volume | 91Issue:9Pages:93006 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| DOI | http://dx.doi.org/10.1103/PhysRevD.91.093006 |
| Indexed By | SCI |
| Funding Organization | CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; [NSFC-11025525] ; [NSFC-11025525] ; [NSFC-11025525] ; [NSFC-11025525] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/21000 |
| Collection | SCI期刊论文 |
| Corresponding Author | Han, ZL (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China. |
| Recommended Citation GB/T 7714 | 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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| LHC phenomenology of（1091KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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