The magnitude of the sigma-commutator term in current algebra - INSPIRE

DataBETA

The magnitude of the sigma-commutator term in current algebra

1971

5 pages

Published in:

Phys.Lett.B 35 (1971) 445-449

Published: 1971

DOI:

10.1016/0370-2693(71)90418-7

View in:

reference search86 citations

Citations per year

Abstract: (Elsevier)

The magnitude of the σ-commutator term is estimated from an extrapolation of the πN scattering amplitude to an unphysical point and the uncertainties of this procedure are discussed. The result is smaller than the recent estimate by Chang and Dashen.

pi nucleon: interaction
interaction: pi nucleon
current algebra
dispersion relation
partial wave
pi: total cross section
total cross section: pi
model: sigma-exchange
sigma-exchange: model
meson resonance

References(19)

Figures(0)

[1]

Current algebras and their applications

B. Renner

[2]

Is SU(2) x SU(2) a better symmetry than SU(3)?

- Phys.Rev.Lett. 26 (1971) 594
•
DOI:
- 10.1103/PhysRevLett.26.594

[3]

preprint, University of Karlsruhe

G. Höhler
,
H.P. Jakob
,
R. Strauss

[4]

preprint, Universities of Bielefeld and Karlsruhe

G. Höhler
,
P. Stichel

[5]

UCRL-20030 πN (Feb.) CERN Experimental Solution and private communication from Dr. Lovelace

[6]

Ward-identity techniques and low-energy pion-nucleon scattering

E.T. Osypowski
(
- Wisconsin U., Madison
)

- Nucl.Phys.B 21 (1970) 615-658
•
DOI:
- 10.1016/0550-3213(70)90549-3

[7]

Is a subtraction really necessary in the isospin even pi n dispersion relation?

G. Hoehler
(
- Karlsruhe U.
)
,
R. Strauss
(
- Karlsruhe U.
)

- Z.Phys. 232 (1970) 205-222
•
DOI:
- 10.1007/BF01391518

[8]

Tables of pion-nucleon forward amplitudes, preprint, Univeristy of Karlsruhe (Oct.)

G. Höhler
,
R. Strauss

[9]

to be published

G. Höhler
,
H.P. Jakob

[10]

Experimental test of the pion-nucleon forward dispersion relations at high energies

et al.

- Phys.Rev. 181 (1969) 1775-1793
•
DOI:
- 10.1103/PhysRev.181.1775

[11]

The total cross-sections for pion-proton scattering between 70 mev and 290 mev

- Nucl.Phys.B 26 (1971) 445-460
•
DOI:
- 10.1016/0550-3213(71)90188-X

[12]

Discrepancies between pi n charge exchange forward scattering data and the dispersion relation prediction

G. Hoehler
(
- Karlsruhe U.
)
,
R. Strauss
(
- Karlsruhe U.
)

- Z.Phys. 240 (1970) 377-391
•
DOI:
- 10.1007/BF01395574

[13]

Compilation of coupling constants and low energy parameters

Ebel

[14]

University of Bielefeld, to be published

J. Engels

[15]

preprint, Florida State University, Tallahassee

L.M. Nath
,
B. Etemadi
,
J.D. Kimel

[16]

Consistency conditions on the strong interactions implied by a partially conserved axial vector current

Stephen L. Adler
(
- Princeton U.
)

- Phys.Rev. 137 (1965) B1022-B1033,
•
DOI:
- 10.1103/PhysRev.137.B1022

[17]

Intern. Conf. on Elementary particles at Kiev

G. Höhler
,
J. Engels

[17]

J. Engels

- Nucl.Phys.B 25 (1971) 146

[18]

to be published

R. Strauss