gamma gamma -> M+ M-(M = pi, K) processes with twist-3 corrections in QCD

doi:http://dx.doi.org/10.1140/epjc/s10052-017-4764-2

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	gamma gamma -> M+ M-(M = pi, K) processes with twist-3 corrections in QCD
	Wang, C; Zhou, MZ; Chen, H; Zhou, MZ (reprint author), Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China.
刊名	EUROPEAN PHYSICAL JOURNAL C
	2017
卷号	77 期号:4 页码:219
DOI	http://dx.doi.org/10.1140/epjc/s10052-017-4764-2
英文摘要	We study the gamma gamma -> M+ M- (M = pi, K) processes with the contributions from the two-particle twist-2 and twist-3 distribution amplitudes of pion and kaon mesons on BHL prescription in the standard hard-scattering approach. The results show that the contributions from twist-3 parts are actually not power suppressed compared with the leading-twist contributions in the low energy region. The cross sections with twist-3 corrections agree well with the experimental data in the two-photon center-of-mass energy W > 2.8 GeV and we also predict the cross section ratio sigma(0)(K+ K-)/sigma(0)(pi(+) pi(-)), which is compatible with the experimental data from TPC and Belle.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22079]
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	Zhou, MZ (reprint author), Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China.
推荐引用方式 GB/T 7714	Wang, C,Zhou, MZ,Chen, H,et al. gamma gamma -> M+ M-(M = pi, K) processes with twist-3 corrections in QCD[J]. EUROPEAN PHYSICAL JOURNAL C,2017,77(4):219.
APA	Wang, C,Zhou, MZ,Chen, H,&Zhou, MZ .(2017).gamma gamma -> M+ M-(M = pi, K) processes with twist-3 corrections in QCD.EUROPEAN PHYSICAL JOURNAL C,77(4),219.
MLA	Wang, C,et al."gamma gamma -> M+ M-(M = pi, K) processes with twist-3 corrections in QCD".EUROPEAN PHYSICAL JOURNAL C 77.4(2017):219.