Scattering in the πN negative parity channel in lattice QCD

被引：82

作者：

Lang, C. B. ^{[1
]}

Verduci, V. ^{[1
]}

机构：

[1] Graz Univ, Inst Phys, A-8010 Graz, Austria

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 05期

基金：

奥地利科学基金会;

关键词：

QUANTUM-FIELD THEORIES; VOLUME DEPENDENCE; ENERGY-SPECTRUM; RESONANCE; STATES; MESON;

D O I：

10.1103/PhysRevD.87.054502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the coupled pi N system (negative parity, isospin 1/2) based on a lattice QCD simulation for n(f) = 2 mass degenerate light quarks. Both standard 3-quark baryon operators as well as meson-baryon (4 + 1)-quark operators are included. This is an exploratory study for just one lattice size and lattice spacing and at a pion mass of 266 MeV. Using the distillation method and variational analysis we determine energy levels of the lowest eigenstates. Comparison with the results of simple 3-quark correlation studies exhibits drastic differences and a new level appears. A clearer picture of the negative parity nucleon spectrum emerges. For the parameters of the simulation we may assume elastic s-wave scattering and can derive values of the phase shift. DOI: 10.1103/PhysRevD.87.054502

引用

页数：12

共 48 条

[1] ρ meson decay in 2+1 flavor lattice QCD [J].

Aoki, S. ;

Ishikawa, K-I. ;

Ishizuka, N. ;

Kanaya, K. ;

Kuramashi, Y. ;

Namekawa, Y. ;

Okawa, M. ;

Taniguchi, Y. ;

Ukawa, A. ;

Ukita, N. ;

Yamazaki, T. ;

Yoshie, T. .

PHYSICAL REVIEW D, 2011, 84 (09)

[2] Extended partial-wave analysis of πN scattering data [J].

Arndt, R. A. ;

Briscoe, W. J. ;

Strakovsky, I. I. ;

Workman, R. L. .

PHYSICAL REVIEW C, 2006, 74 (04)

[3] 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)

[4] Resonance properties from the finite-volume energy spectrum [J].

Bernard, V. ;

Lage, M. ;

Meissner, U. -G. ;

Rusetsky, A. .

JOURNAL OF HIGH ENERGY PHYSICS, 2008, (08)

[5] On the generalized eigenvalue method for energies and matrix elements in lattice field theory [J].

Blossier, Benoit ;

Della Morte, Michele ;

von Hippel, Georg ;

Mendes, Tereza ;

Sommer, Rainer .

JOURNAL OF HIGH ENERGY PHYSICS, 2009, (04)

[6] Nucleon, Δ, and Ω excited state spectra in Nf=2+1 lattice QCD [J].

Bulava, J. ;

Edwards, R. G. ;

Engelson, E. ;

Joo, B. ;

Lin, H-W. ;

Morningstar, C. ;

Richards, D. G. ;

Wallace, S. J. .

PHYSICAL REVIEW D, 2010, 82 (01)

[7]

Cohen S., 2009, POS LAT2009, P112

[8] PION-NUCLEON PARTIAL-WAVE AMPLITUDES [J].

CUTKOSKY, RE ;

FORSYTH, CP ;

HENDRICK, RE ;

KELLY, RL .

PHYSICAL REVIEW D, 1979, 20 (11) :2839-2853

[9] Dynamical coupled-channel approaches on a momentum lattice [J].

Doering, M. ;

Haidenbauer, J. ;

Meissner, U. -G. ;

Rusetsky, A. .

EUROPEAN PHYSICAL JOURNAL A, 2011, 47 (12)

[10] Energy dependence of the ρ resonance in ππ elastic scattering from lattice QCD [J].

Dudek, Jozef J. ;

Edwards, Robert G. ;

Thomas, Christopher E. .

PHYSICAL REVIEW D, 2013, 87 (03)

← 1 2 3 4 5 →