Composite nature of the Λ (1520) resonance

被引：15

作者：

Aceti, F. ^{[1
,2
]}

Oset, E. ^{[1
,2
]}

Roca, L. ^{[3
]}

机构：

[1] Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,Dept Fis Teor, E-46071 Valencia, Spain

[2] Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,IFIC, E-46071 Valencia, Spain

[3] Univ Murcia, Dept Fis, E-30100 Murcia, Spain

来源：

PHYSICAL REVIEW C | 2014年 / 90卷 / 02期

关键词：

CHIRAL DYNAMICS; STATES; MESON;

D O I：

10.1103/PhysRevC.90.025208

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recently, the Weinberg compositeness condition of a bound state was generalized to account for resonant states and higher partial waves. We apply this extension to the case of the Lambda (1520) resonance and quantify the weight of the meson-baryon components in contrast to other possible genuine building blocks. This resonance was theoretically obtained from a coupled channels analysis using the s-wave pi Sigma* and K Xi* and the d-wave (K) over bar N and pi Sigma channels, applying the techniques of the chiral unitary approach. We obtain the result that this resonance is essentially dynamically generated from these meson-baryon channels, leaving room for only 15% weight of other kinds of components in its wave function.

引用

页数：8

共 38 条

[1] Meson-baryon components in the states of the baryon decuplet [J].

Aceti, F. ;

Dai, L. R. ;

Geng, L. S. ;

Oset, E. ;

Zhang, Y. .

EUROPEAN PHYSICAL JOURNAL A, 2014, 50 (03) :1-11

[2] X(3872) → J/ψγ decay in the D(D)over-bar* molecular picture [J].

Aceti, F. ;

Molina, R. ;

Oset, E. .

PHYSICAL REVIEW D, 2012, 86 (11)

[3] Wave functions of composite hadron states and relationship to couplings of scattering amplitudes for general partial waves [J].

Aceti, F. ;

Oset, E. .

PHYSICAL REVIEW D, 2012, 86 (01)

[4]

Alston-Garnjost M., UNPUB

[5] Evidence that the a0(980) and f0(980) are not elementary particles [J].

Baru, V ;

Haidenbauer, J ;

Hanhart, C ;

Kalashnikova, Y ;

Kudryavtsev, A .

PHYSICS LETTERS B, 2004, 586 (1-2) :53-61

[6] REVIEW OF PARTICLE PHYSICS Particle Data Group [J].

Beringer, J. ;

Arguin, J. -F. ;

Barnett, R. M. ;

Copic, K. ;

Dahl, O. ;

Groom, D. E. ;

Lin, C. -J. ;

Lys, J. ;

Murayama, H. ;

Wohl, C. G. ;

Yao, W. -M. ;

Zyla, P. A. ;

Amsler, C. ;

Antonelli, M. ;

Asner, D. M. ;

Baer, H. ;

Band, H. R. ;

Basaglia, T. ;

Bauer, C. W. ;

Beatty, J. J. ;

Belousov, V. I. ;

Bergren, E. ;

Bernardi, G. ;

Bertl, W. ;

Bethke, S. ;

Bichsel, H. ;

Biebel, O. ;

Blucher, E. ;

Blusk, S. ;

Brooijmans, G. ;

Buchmueller, O. ;

Cahn, R. N. ;

Carena, M. ;

Ceccucci, A. ;

Chakraborty, D. ;

Chen, M. -C. ;

Chivukula, R. S. ;

Cowan, G. ;

D'Ambrosio, G. ;

Damour, T. ;

de Florian, D. ;

de Gouvea, A. ;

DeGrand, T. ;

de Jong, P. ;

Dissertori, G. ;

Dobrescu, B. ;

Doser, M. ;

Drees, M. ;

Edwards, D. A. ;

Eidelman, S. .

PHYSICAL REVIEW D, 2012, 86 (01)

[7] Bound state nature of the exotic Zb states [J].

Cleven, M. ;

Guo, F. -K. ;

Hanhart, C. ;

Meissner, U. -G. .

EUROPEAN PHYSICAL JOURNAL A, 2011, 47 (10)

[8] Finite volume effects in pion-kaon scattering and reconstruction of the κ(800) resonance [J].

Doering, M. ;

Meissner, U. -G. .

JOURNAL OF HIGH ENERGY PHYSICS, 2012, (01)

[9] Radiative decay of the Λ*(1520) [J].

Doring, M. ;

Oset, E. ;

Sarkar, Sourav .

PHYSICAL REVIEW C, 2006, 74 (06)

[10] Couplings in coupled channels versus wave functions: Application to the X(3872) resonance [J].

Gamermann, D. ;

Nieves, J. ;

Oset, E. ;

Ruiz Arriola, E. .

PHYSICAL REVIEW D, 2010, 81 (01)

← 1 2 3 4 →