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

被引：0

作者：

陈莹 ^{[1
,2
]}

宫明 ^{[1
,2
]}

荔宁 ^{[3
]}

刘川 ^{[4
,5
]}

刘玉斌 ^{[6
]}

刘朝峰 ^{[1
,2
]}

马建平 ^{[7
,2
]}

孟雨 ^{[8
]}

熊超 ^{[8
]}

张克龙 ^{[8
]}

CLQCD Collaboration

机构：

[1] Institute of High Energy Physics Chinese Academy of Sciences

[2] School of Physics University of Chinese Academy of Sciences

[3] School of Science Xi’an Technological University

[4] School of Physics and Center for High Energy Physics Peking University

[5] Collaborative Innovation Center of Quantum Matter

[6] School of Physics Nankai University

[7] Institute of Theoretical Physics Chinese Academy of Sciences

[8] School of Physics Peking University

来源：

Chinese Physics C | 2020年 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

暂无

中图分类号：

O413.1 [量子力学（波动力学、矩阵力学）];

学科分类号：

070205 ; 0809 ;

摘要：

This exploratory study computes two-photon decay widths of pseudo-scalar（η;） and scalar(χ;) charmonium using two ensembles of N;=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;×64 and a=0.085 fm with size 24;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.

引用

页码：92 / 101

页数：10

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[1] Lattice study of two-photon decay widths for scalar and pseudo-scalar charmonium
陈莹
宫明
荔宁
刘川
刘玉斌
刘朝峰
马建平
孟雨
熊超
张克龙
CLQCD Collaboration
[J]. Chinese Physics C, 2020, 44 (08) : 92 - 101
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