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Acharya, NR; Guo, FK; Meissner, UG; Seng, CY; Seng, CY (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, INPAC, Shanghai 200240, Shanghai, Peoples R China.
Connected and disconnected contractions in pion-pion scattering
发表期刊NUCLEAR PHYSICS B
语种英语
摘要We show that the interplay of chiral effective field theory and lattice QCD can be used in the evaluation of so-called disconnected diagrams, which appear in the study of the isoscalar and isovector channels of pion-pion scattering and have long been a major challenge for the lattice community. By means of partially-quenched chiral perturbation theory, we distinguish and analyze the effects from different types of contraction diagrams to the pion-pion scattering amplitude, including its scattering lengths and the energy-dependence of its imaginary part. Our results may be used to test the current degree of accuracy of lattice calculation in the handling of disconnected diagrams, as well as to set criteria for the future improvement of relevant lattice computational techniques that may play a critical role in the study of other interesting QCD matrix elements. (C) 2017 The Author(s). Published by Elsevier B.V.
2017
卷号922页码:480-498
学科领域Physics
DOIhttp://dx.doi.org/10.1016/j.nuclphysb.2017.07.012
项目资助者DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS President's International Fellowship Initiative (PIFI) [2017VMA0025] ; CAS President's International Fellowship Initiative (PIFI) [2017VMA0025] ; CAS President's International Fellowship Initiative (PIFI) [2017VMA0025] ; CAS President's International Fellowship Initiative (PIFI) [2017VMA0025] ; Natural Science Foundation of Shanghai [15DZ2272100, 15ZR1423100] ; Natural Science Foundation of Shanghai [15DZ2272100, 15ZR1423100] ; Natural Science Foundation of Shanghai [15DZ2272100, 15ZR1423100] ; Natural Science Foundation of Shanghai [15DZ2272100, 15ZR1423100]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21979
专题理论物理所科研产出_SCI论文
通讯作者Seng, CY (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, INPAC, Shanghai 200240, Shanghai, Peoples R China.
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GB/T 7714
Acharya, NR,Guo, FK,Meissner, UG,et al. Connected and disconnected contractions in pion-pion scattering[J]. NUCLEAR PHYSICS B,2017,922:480-498.
APA Acharya, NR,Guo, FK,Meissner, UG,Seng, CY,&Seng, CY .(2017).Connected and disconnected contractions in pion-pion scattering.NUCLEAR PHYSICS B,922,480-498.
MLA Acharya, NR,et al."Connected and disconnected contractions in pion-pion scattering".NUCLEAR PHYSICS B 922(2017):480-498.
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