Next-to-leading-order QCD corrections to e+e− → H + γ
文献类型：期刊论文
| 作者 | Sun QF(孙青峰); Sang, W.-L., 陈文; Feng F(冯锋); Jia Y(贾宇) ; W. Chen, F. Feng, Y. Jia and Q.-F. Sun
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| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2017 |
| 卷号 | 775页码:152-159 |
| ISSN号 | 0370-2693 |
| 关键词 | Standard Model Higgs boson QCD corrections |
| DOI | 10.1016/j.physletb.2017.10.044 |
| 文献子类 | Article |
| 英文摘要 | The associated production of Higgs boson with a hard photon at lepton collider, i.e., e(+)e(-) -> H gamma, is known to bear a rather small cross section in Standard Model, and can serve as a sensitive probe for the potential new physics signals. Similar to the loop-induced Higgs decay channels H -> gamma gamma, Z gamma, the e(+)e(-) -> H gamma process also starts at one-loop order provided that the tiny electron mass is neglected. In this work, we calculate the next-to-leading-order (NLO) QCD corrections to this associated H + gamma production process, which mainly stem from the gluonic dressing to the top quark loop. The QCD corrections are found to be rather modest at lower center-of-mass energy range (root s < 300 GeV), thus of negligible impact on Higgs factory such as CEPC. Nevertheless, when the energy is boosted to the ILC energy range (root s approximate to 400 GeV), QCD corrections may enhance the leading-order cross section by 20%. In any event, the e(+)e(-) -> H gamma process has a maximal production rate sigma(max) approximate to 0.08 fb around root s= 250 GeV, thus CEPC turns out to be the best place to look for this rare Higgs production process. In the high energy limit, the effect of NLO QCD corrections become completely negligible, which can be simply attributed to the different asymptotic scaling behaviors of the LO and NLO cross sections, where the former exhibits a milder decrement alpha 1/s, but the latter undergoes a much faster decrease alpha 1/s(2). (C) 2017 The Author(s). Published by Elsevier B.V. |
| 电子版国际标准刊号 | 1873-2445 |
| WOS关键词 | ELECTROWEAK RADIATIVE-CORRECTIONS ; HIGGS-BOSON ; FEYNMAN DIAGRAMS ; E+E-ANNIHILATION ; STANDARD MODEL ; 2-PHOTON DECAY ; PARTICLES ; COLLIDERS ; PHYSICS ; QUARKS |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000417190700021 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284579]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Sun QF,Sang, W.-L., 陈文,Feng F,et al. Next-to-leading-order QCD corrections to e+e− → H + γ[J]. PHYSICS LETTERS B,2017,775:152-159. |
| APA | 孙青峰,Sang, W.-L., 陈文,冯锋,贾宇,&W. Chen, F. Feng, Y. Jia and Q.-F. Sun.(2017).Next-to-leading-order QCD corrections to e+e− → H + γ.PHYSICS LETTERS B,775,152-159. |
| MLA | 孙青峰,et al."Next-to-leading-order QCD corrections to e+e− → H + γ".PHYSICS LETTERS B 775(2017):152-159. |
入库方式： OAI收割
来源：高能物理研究所
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