{eta}{ital N} {ital S}-wave scattering length in a three-coupled-channel, multiresonance, unitary model
- Rudjer Boskovic Institute, Zagreb (Croatia)
The {ital S}-wave scattering length for the {eta}{ital N} elastic scattering is extracted from the {ital S}-wave {ital T} matrix in a three-coupled-channel, multiresonance unitary model. Results are compared with values already reported in the literature which are obtained on the basis of simpler models, usually single-resonance--no background. The dispersion among the previously published values of the real part of the {ital S}-wave scattering length is observed. We show that the {eta}{ital N} scattering length value obtained in single-resonance--no background models significantly increases if a background term is added in a unitary way. We question the reliability of previously reported values based only on the single-resonance--no background models, and demonstrate that the value of the {eta}{ital N} {ital S}-wave scattering length obtained in this publication is much more realistic because of the multiresonance and unitary approach.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 118514
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 52; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
{pi}{ital N}{r_arrow}{eta}{ital N} and {eta}{ital N}{r_arrow}{eta}{ital N} partial-wave {ital T} matrices in a coupled, three-channel model
{ital S}-wave resonance coupled-channel approach to the reactions {pi}{sup {minus}}+{ital p}{r_arrow}{eta}+{ital n} and {ital K}{sup {minus}}+{ital p}{r_arrow}{eta}+{Lambda}, and a determination of the {eta}{ital n} and {eta}{Lambda} scattering lengths
A coupled-channels analysis of pion scattering and pion-induced eta production on the nucleon
Journal Article
·
Mon May 01 00:00:00 EDT 1995
· Physical Review, C
·
OSTI ID:44669
{ital S}-wave resonance coupled-channel approach to the reactions {pi}{sup {minus}}+{ital p}{r_arrow}{eta}+{ital n} and {ital K}{sup {minus}}+{ital p}{r_arrow}{eta}+{Lambda}, and a determination of the {eta}{ital n} and {eta}{Lambda} scattering lengths
Journal Article
·
Sun Dec 31 23:00:00 EST 1995
· Physical Review, C
·
OSTI ID:277419
A coupled-channels analysis of pion scattering and pion-induced eta production on the nucleon
Journal Article
·
Fri Mar 31 23:00:00 EST 1995
· Bulletin of the American Physical Society
·
OSTI ID:374662