ITP OpenIR  > 理论物理所2017年知识产出
Connected and disconnected contractions in pion-pion scattering
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.
2017
发表期刊NUCLEAR PHYSICS B
卷号922页码:480-498
文章类型Article
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.
学科领域Physics
资助者DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; 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 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] ; DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; 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 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]
DOIhttp://dx.doi.org/10.1016/j.nuclphysb.2017.07.012
关键词[WOS]CHIRAL PERTURBATION-THEORY ; LATTICE QCD ; ONE-LOOP ; LENGTH ; FERMIONS ; QUARKS ; MASS
语种英语
资助者DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; 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 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] ; DFG [CRC 110, 11621131001, TRR110] ; DFG [CRC 110, 11621131001, TRR110] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; NSFC [11621131001, TRR110, 11575110, 11175115, 11647601] ; 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 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]
WOS类目Physics, Particles & Fields
引用统计
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2017年知识产出
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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