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Low-lying even parity meson resonances and spin-flavor symmetry revisited
Garcia-Recio, C; Geng, LS; Nieves, J; Salcedo, LL; Wang, E; Xie, JJ; Garcia-Recio, C (reprint author), Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain.
2013
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号87期号:9页码:96006
摘要We review and extend the model derived in Garcia-Recio et al. [Phys. Rev. D 83, 016007 (2011)] to address the dynamics of the low-lying even-parity meson resonances. This model is based on a coupled-channels spin-flavor extension of the chiralWeinberg-Tomozawa Lagrangian. This interaction is then used to study the S-wave meson-meson scattering involving members not only of the pi octet, but also of the rho nonet. In this work, we study in detail the structure of the SU(6)-symmetry-breaking contact terms that respect (or softly break) chiral symmetry. We derive the most general local (without involving derivatives) terms consistent with the chiral-symmetry-breaking pattern of QCD. After introducing sensible simplifications to reduce the large number of possible operators, we carry out a phenomenological discussion of the effects of these terms. We show how the inclusion of these pieces leads to an improvement of the description of the J(P) = 2(+) sector, without spoiling the main features of the predictions obtained in the original model in the JP = 0(+) and J(P) = 1(+) sectors. In particular, we find a significantly better description of the I-G(J(PC)) =0(+)(2(++)), 1(-)(2(++)) and the I(JP)=1/2(2(+)) sectors, which correspond to the f(2)(1270), a(2)(1320), and K-2(*)(1430) quantum numbers, respectively.
部门归属[Garcia-Recio, C.; Salcedo, L. L.] Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain; [Garcia-Recio, C.; Salcedo, L. L.] Univ Granada, Inst Carlos Fis Teor & Computac 1, E-18071 Granada, Spain; [Geng, L. S.] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China; [Nieves, J.; Wang, En] Univ Valencia, CSIC, Inst Invest Paterna, Inst Fis Corpuscular IFIC,Ctr Mixto, E-46071 Valencia, Spain; [Xie, Ju-Jun] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China; [Xie, Ju-Jun] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
关键词Chiral Perturbation-theory Inverse Amplitude Method Bethe-salpeter Approach Pi-pi Scattering-amplitude Dispersion-relations Lagrangians Quark Lengths Model
学科领域Physics
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收录类别SCI
语种英语
WOS记录号WOS:000319059500004
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15365
专题理论物理所SCI论文
通讯作者Garcia-Recio, C (reprint author), Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain.
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Garcia-Recio, C,Geng, LS,Nieves, J,et al. Low-lying even parity meson resonances and spin-flavor symmetry revisited[J]. PHYSICAL REVIEW D,2013,87(9):96006.
APA Garcia-Recio, C.,Geng, LS.,Nieves, J.,Salcedo, LL.,Wang, E.,...&Garcia-Recio, C .(2013).Low-lying even parity meson resonances and spin-flavor symmetry revisited.PHYSICAL REVIEW D,87(9),96006.
MLA Garcia-Recio, C,et al."Low-lying even parity meson resonances and spin-flavor symmetry revisited".PHYSICAL REVIEW D 87.9(2013):96006.
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