Lattice study of two-photon decay widths for scalar and pseudo-scalar charmonium

doi:10.1088/1674-1137/44/8/083108

ITP OpenIR > SCI期刊论文

	Chen, Ying ; Gong, Ming ; Li, Ning 2; Liu, Chuan 4,5; Li, Yu-Bin ; Liu, Zhaofeng ; Ma, Jian-Ping; Meng, Yu ; Xiong, Chao ; Zhang, Ke-Long
	Lattice study of two-photon decay widths for scalar and pseudo-scalar charmonium
Source Publication	CHINESE PHYSICS C
Language	英语
Keyword	TRANSITION FORM-FACTOR GAMMA-GAMMA-ASTERISK
Abstract	This exploratory study computes two-photon decay widths of pseudo-scalar (eta(c)) and scalar (chi(c0)) charmonium using two ensembles of N-f = 2 twisted mass lattice QCD gauge configurations. The simulation is performed using two lattice ensembles with lattice spacings a = 0.067 fm with size 32(3) x 64 and a = 0.085 fm with size 24(3) x 48. The decay widths for the two charmonia are obtained within the expected ballpark, but are however smaller than the experimental ones. Possible reasons for these discrepancies are discussed.
	2020
ISSN	1674-1137
Volume	44 Issue:8 Pages:83108
Cooperation Status	国内
Subject Area	Physics
MOST Discipline Catalogue	Physics, Nuclear ; Physics, Particles & Fields
DOI	10.1088/1674-1137/44/8/083108
Indexed By	SCIE
Citation statistics
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/27378
Collection	SCI期刊论文
Affiliation	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 3.Xian Technol Univ, Sch Sci, Xian 710032, Peoples R China 4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 5.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 6.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China 7.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China 8.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation GB/T 7714	Chen, Ying,Gong, Ming,Li, Ning,et al. Lattice study of two-photon decay widths for scalar and pseudo-scalar charmonium[J]. CHINESE PHYSICS C,2020,44(8):83108.
APA	Chen, Ying.,Gong, Ming.,Li, Ning.,Liu, Chuan.,Li, Yu-Bin.,...&Zhang, Ke-Long.(2020).Lattice study of two-photon decay widths for scalar and pseudo-scalar charmonium.CHINESE PHYSICS C,44(8),83108.
MLA	Chen, Ying,et al."Lattice study of two-photon decay widths for scalar and pseudo-scalar charmonium".CHINESE PHYSICS C 44.8(2020):83108.

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