| Bridging light-cone and nrqcd approaches: asymptotic behavior of b-c electromagnetic form factor | |
| Jia, Yu1,2; Wang, Jian-Xiong1,2; Yang, Deshan3 | |
| 刊名 | Journal of high energy physics
 |
| 2011-10-01 | |
| 期号 | 10页码:33 |
| 关键词 | Asymptotic freedom Nlo computations Qcd |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/jhep10(2011)105 |
| 通讯作者 | Jia, yu(jiay@ihep.ac.cn) |
| 英文摘要 | This work aims at illustrating that, for a class of leading-twist hard exclusive reactions involving two heavy quarkonia, the light-conic approach, when equipped with the strategy of refactorization of the light-cone distribution amplitude of quarkonium, can be employed to elegantly reproduce the corresponding prediction's made in the nonrelativistic qcd (nrqcd) factorization approach, order by order in perturbative expansion. taking the electromagnetic form factor of the b-c meson at large momentum transfer, q(2), as a concrete example, we compare the results obtained from both nrqcd-based and light-cone-based calculations through the next-to-leading order (nlo) in alpha(s)., while at the leading order (lo) in both velocity and 1/q(2) expansion, and explicitly confirm their mutual agreement. as a byproduct, we apply our nlo result to explore certain features about the asymptotic behavior of the heavy-light meson form factor. we also address the major theoretical obstacles that prevent us from establishing an analogous equivalence between these two approaches for the double charmonium production process of phenomenological interest, e(+)e(-) -> j/psi + eta(c). |
| WOS关键词 | TO-LEADING-ORDER ; QUANTUM CHROMODYNAMICS ; EXCLUSIVE PROCESSES ; RADIATIVE-CORRECTIONS ; QCD FACTORIZATION ; HEAVY QUARKONIUM ; ROOT-S=10.6 GEV ; WAVE-FUNCTION ; MESON ; ANNIHILATION |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000296917300030 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2176063 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Jia, Yu |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Grad Univ, Coll Phys Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Yu,Wang, Jian-Xiong,Yang, Deshan. Bridging light-cone and nrqcd approaches: asymptotic behavior of b-c electromagnetic form factor[J]. Journal of high energy physics,2011(10):33. |
| APA | Jia, Yu,Wang, Jian-Xiong,&Yang, Deshan.(2011).Bridging light-cone and nrqcd approaches: asymptotic behavior of b-c electromagnetic form factor.Journal of high energy physics(10),33. |
| MLA | Jia, Yu,et al."Bridging light-cone and nrqcd approaches: asymptotic behavior of b-c electromagnetic form factor".Journal of high energy physics .10(2011):33. |
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