Next-to-leading-order qcd corrections to e(+)e(-) -> h plus gamma
文献类型：期刊论文
| 作者 | Sang, Wen-Long1; Chen, Wen2,3; Feng, Feng2,4; Jia, Yu2,3,5; Sun, Qing-Feng2,6 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2017-12-10 |
| 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 |
| 通讯作者 | Chen, wen(chenwen@ihep.ac.cn) |
| 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. |
| 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 |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000417190700021 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177866 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Chen, Wen |
| 作者单位 | 1.Southwest Univ, Sch Phys Sci & Technol, Chongqing 400700, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys & Theoret Phys, Ctr Sci Facil, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 4.China Univ Min & Technol, Beijing 100083, Peoples R China 5.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 6.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sang, Wen-Long,Chen, Wen,Feng, Feng,et al. Next-to-leading-order qcd corrections to e(+)e(-) -> h plus gamma[J]. Physics letters b,2017,775:152-159. |
| APA | Sang, Wen-Long,Chen, Wen,Feng, Feng,Jia, Yu,&Sun, Qing-Feng.(2017).Next-to-leading-order qcd corrections to e(+)e(-) -> h plus gamma.Physics letters b,775,152-159. |
| MLA | Sang, Wen-Long,et al."Next-to-leading-order qcd corrections to e(+)e(-) -> h plus gamma".Physics letters b 775(2017):152-159. |
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