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	Anatomy of the ρ resonance from lattice qcd at the physical point**supported in part by the u.s. doe grant no. de-sc0013065, the national nature science foundation of china (nsfc) (11335001, 11575196, 11575197, 11621131001) (crc110 by dfg and nsfc), a. a. is supported in part by the national science foundation career (phy-1151648) and by u.s. doe (de-fg02-95er40907), y. c. thanks the cas center for excellence in particle physics (ccepp) for their support, this research used the resources of the oak ridge leadership computing facility at the oak ridge national laboratory, which is supported by the office of science of the u.s. department of energy (de-ac05-00or22725)
	Sun,Wei1,2; Alexandru,Andrei3; Chen,Ying1,2; Draper,Terrence4; Liu,Zhaofeng1,2; Yang,Yi-Bo5
刊名	Chinese physics c
	2018-05-01
卷号	42期号:6
关键词	ρ resonance Leptonic decay constant Renormalization 12.38.gc 13.20.jf 14.40.be
ISSN号	1674-1137
DOI	10.1088/1674-1137/42/6/063102
英文摘要	Abstract we propose a strategy to access the q q ˉ component of the ρ resonance in lattice qcd. through a mixed action formalism (overlap valence on domain wall sea), the energy of the q q ˉ component is derived at different valence quark masses, and shows a linear dependence on m π 2 . the slope is determined to be c 1 = 0.505 ( 3 ) gev ? 1 , from which the valence π ρ sigma term is extracted to be σ π ρ ( val ) = 9.82 ( 6 ) mev using the feynman-hellman theorem. at the physical pion mass, the mass of the q q ˉ component is interpolated to be m ρ = 775.9 ± 6.0 ± 1.8 mev , which is close to the ρ resonance mass. we also obtain the leptonic decay constant of the q q ˉ component to be f ρ ? = 208.5 ± 5.5 ± 0.9 mev , which can be compared with the experimental value f ρ exp ≈ 221 mev through the relation f ρ exp = z ρ f ρ ± , with z ρ ≈ 1.13 being the on-shell wavefunction renormalization of ρ owing to the ρ ? π interaction. we emphasize that m ρ and f ρ of the q q ˉ component, which are obtained for the first time from qcd, can be taken as the input parameters of ρ in effective field theory studies where ρ acts as a fundamental degree of freedom.
语种	英语
出版者	Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
WOS记录号	IOP:1674-1137-42-6-063102
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2175741
专题	高能物理研究所
作者单位	1.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 2.School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China 3.Department of Physics, George Washington University, Washington, DC 20052, USA 4.Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506, USA 5.Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
推荐引用方式 GB/T 7714	Sun,Wei,Alexandru,Andrei,Chen,Ying,et al. Anatomy of the ρ resonance from lattice qcd at the physical point**supported in part by the u.s. doe grant no. de-sc0013065, the national nature science foundation of china (nsfc) (11335001, 11575196, 11575197, 11621131001) (crc110 by dfg and nsfc), a. a. is supported in part by the national science foundation career (phy-1151648) and by u.s. doe (de-fg02-95er40907), y. c. thanks the cas center for excellence in particle physics (ccepp) for their support, this research used the resources of the oak ridge leadership computing facility at the oak ridge national laboratory, which is supported by the office of science of the u.s. department of energy (de-ac05-00or22725)[J]. Chinese physics c,2018,42(6).
APA	Sun,Wei,Alexandru,Andrei,Chen,Ying,Draper,Terrence,Liu,Zhaofeng,&Yang,Yi-Bo.(2018).Anatomy of the ρ resonance from lattice qcd at the physical point**supported in part by the u.s. doe grant no. de-sc0013065, the national nature science foundation of china (nsfc) (11335001, 11575196, 11575197, 11621131001) (crc110 by dfg and nsfc), a. a. is supported in part by the national science foundation career (phy-1151648) and by u.s. doe (de-fg02-95er40907), y. c. thanks the cas center for excellence in particle physics (ccepp) for their support, this research used the resources of the oak ridge leadership computing facility at the oak ridge national laboratory, which is supported by the office of science of the u.s. department of energy (de-ac05-00or22725).Chinese physics c,42(6).
MLA	Sun,Wei,et al."Anatomy of the ρ resonance from lattice qcd at the physical point**supported in part by the u.s. doe grant no. de-sc0013065, the national nature science foundation of china (nsfc) (11335001, 11575196, 11575197, 11621131001) (crc110 by dfg and nsfc), a. a. is supported in part by the national science foundation career (phy-1151648) and by u.s. doe (de-fg02-95er40907), y. c. thanks the cas center for excellence in particle physics (ccepp) for their support, this research used the resources of the oak ridge leadership computing facility at the oak ridge national laboratory, which is supported by the office of science of the u.s. department of energy (de-ac05-00or22725)".Chinese physics c 42.6(2018).

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