Chiral perturbation theory for pentaquark baryons and its applications

P. Ko; Jungil Lee; Taekoon Lee; Jae Hyeon Park

doi:10.1016/j.physletb.2005.02.031

Chiral perturbation theory for pentaquark baryons and its applications

P. Ko, Jungil Lee, Taekoon Lee, Jae Hyeon Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We construct a chiral Lagrangian for pentaquark baryons assuming that the recently found Θ+(1540) state belongs to an antidecuplet of SU(3) flavor symmetry with JP=12±. We derive the Gell-Mann-Okubo formulae for the antidecuplet baryon masses, and a possible mixing between the antidecuplet and the pentaquark octet. Then we calculate the cross sections for π-p→K-Θ+ and γn→K-Θ+ using our chiral Lagrangian. The resulting amplitudes respect the underlying chiral symmetry of QCD correctly. We also describe how to include the light vector mesons in the chiral Lagrangian.

Original language	English
Pages (from-to)	87-92
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	611
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2005.02.031
Publication status	Published - 2005 Mar 31

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2005.02.031

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title = "Chiral perturbation theory for pentaquark baryons and its applications",

abstract = "We construct a chiral Lagrangian for pentaquark baryons assuming that the recently found Θ+(1540) state belongs to an antidecuplet of SU(3) flavor symmetry with JP=12±. We derive the Gell-Mann-Okubo formulae for the antidecuplet baryon masses, and a possible mixing between the antidecuplet and the pentaquark octet. Then we calculate the cross sections for π-p→K-Θ+ and γn→K-Θ+ using our chiral Lagrangian. The resulting amplitudes respect the underlying chiral symmetry of QCD correctly. We also describe how to include the light vector mesons in the chiral Lagrangian.",

author = "P. Ko and Jungil Lee and Taekoon Lee and Park, {Jae Hyeon}",

note = "Funding Information: This work is supported in part by KOSEF through CHEP at Kyungpook National University and by the BK21 program. The research of J.L. in the High Energy Physics Division at Argonne National Laboratory is supported by the US Department of Energy, Division of High Energy Physics, under Contract W-31-109-ENG-38. J.L. thanks KAIST and KIAS for their hospitality during this work. T.L. is supported in part by BK21 Program and Korea Research Foundation Grant (KRF-2004-015-C00095).",

year = "2005",

month = mar,

day = "31",

doi = "10.1016/j.physletb.2005.02.031",

language = "English",

volume = "611",

pages = "87--92",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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publisher = "Elsevier",

number = "1-2",

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TY - JOUR

T1 - Chiral perturbation theory for pentaquark baryons and its applications

AU - Ko, P.

AU - Lee, Jungil

AU - Lee, Taekoon

AU - Park, Jae Hyeon

N1 - Funding Information: This work is supported in part by KOSEF through CHEP at Kyungpook National University and by the BK21 program. The research of J.L. in the High Energy Physics Division at Argonne National Laboratory is supported by the US Department of Energy, Division of High Energy Physics, under Contract W-31-109-ENG-38. J.L. thanks KAIST and KIAS for their hospitality during this work. T.L. is supported in part by BK21 Program and Korea Research Foundation Grant (KRF-2004-015-C00095).

PY - 2005/3/31

Y1 - 2005/3/31

N2 - We construct a chiral Lagrangian for pentaquark baryons assuming that the recently found Θ+(1540) state belongs to an antidecuplet of SU(3) flavor symmetry with JP=12±. We derive the Gell-Mann-Okubo formulae for the antidecuplet baryon masses, and a possible mixing between the antidecuplet and the pentaquark octet. Then we calculate the cross sections for π-p→K-Θ+ and γn→K-Θ+ using our chiral Lagrangian. The resulting amplitudes respect the underlying chiral symmetry of QCD correctly. We also describe how to include the light vector mesons in the chiral Lagrangian.

AB - We construct a chiral Lagrangian for pentaquark baryons assuming that the recently found Θ+(1540) state belongs to an antidecuplet of SU(3) flavor symmetry with JP=12±. We derive the Gell-Mann-Okubo formulae for the antidecuplet baryon masses, and a possible mixing between the antidecuplet and the pentaquark octet. Then we calculate the cross sections for π-p→K-Θ+ and γn→K-Θ+ using our chiral Lagrangian. The resulting amplitudes respect the underlying chiral symmetry of QCD correctly. We also describe how to include the light vector mesons in the chiral Lagrangian.

UR - http://www.scopus.com/inward/record.url?scp=15044363493&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2005.02.031

DO - 10.1016/j.physletb.2005.02.031

M3 - Article

AN - SCOPUS:15044363493

SN - 0370-2693

VL - 611

SP - 87

EP - 92

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Chiral perturbation theory for pentaquark baryons and its applications

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