Interpreting the 750 GeV diphoton excess by the singlet extension of the Manohar-Wise model
文献类型：期刊论文
| 作者 | Cao, JJ; Han, CC; Shang, LL; Su, W; Yang, JM ; Zhang, Y; Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.; Zhang, Y (reprint author), Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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| 刊名 | PHYSICS LETTERS B
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| 出版日期 | 2016 |
| 卷号 | 755页码:456-463 |
| DOI | http://dx.doi.org/10.1016/j.physletb.2016.02.045 |
| 英文摘要 | The evidence of a new scalar particle X from the 750 GeV diphoton excess, and the absence of any other signal of new physics at the LHC so far suggest the existence of new colored scalars, which may be moderately light and thus can induce sizable Xgg and X gamma gamma couplings without resorting to very strong interactions. Motivated by this speculation, we extend the Manohar-Wise model by adding one gauge singlet scalar field. The resulting theory then predicts one singlet dominated scalar phi as well as three kinds of color-octet scalars, which can mediate through loops the phi gg and phi gamma gamma interactions. After fitting the model to the diphoton data at the LHC, we find that in reasonable parameter regions the excess can be explained at 1 sigma level by the process gg -> phi -> gamma gamma.,and the best points predict the central value of the excess rate with chi(2)(min) = 2.32, which corresponds to a p-value of 0.68. We also consider the constraints from various LHC Run I signals, and we conclude that, although these constraints are powerful in excluding the parameter space of the model, the best points are still experimentally allowed. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21696]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.; Zhang, Y (reprint author), Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Cao, JJ,Han, CC,Shang, LL,et al. Interpreting the 750 GeV diphoton excess by the singlet extension of the Manohar-Wise model[J]. PHYSICS LETTERS B,2016,755:456-463. |
| APA | Cao, JJ.,Han, CC.,Shang, LL.,Su, W.,Yang, JM.,...&Zhang, Y .(2016).Interpreting the 750 GeV diphoton excess by the singlet extension of the Manohar-Wise model.PHYSICS LETTERS B,755,456-463. |
| MLA | Cao, JJ,et al."Interpreting the 750 GeV diphoton excess by the singlet extension of the Manohar-Wise model".PHYSICS LETTERS B 755(2016):456-463. |
入库方式： OAI收割
来源：理论物理研究所
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