{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

DOI:https://doi.org/10.1103/PhysRevC.53.385· OSTI ID:277419

Abaev, V V ^[1]; Nefkens, B M ^[2]

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1. St. Petersburg Institute of Nuclear Physics, Gatchina (Russia)
2. University of California, Los Angeles, California 90095 (United States)

The total cross sections of the reactions {pi}{sup {minus}}+{ital p}{r_arrow}{eta}+{ital n} and {ital K}{sup {minus}}+{ital p}{r_arrow}{eta}+{Lambda} near threshold have been calculated in an {ital S}-wave resonance coupled-channel approach. The {eta}{ital N} scattering length is [0.621{plus_minus}0.040+{ital i}(0.306{plus_minus}0.034)] fm and the {eta}{Lambda} scattering length is [0.64{plus_minus}0.29+{ital i}(0.80{plus_minus}0.30)] fm. The large value of the {eta}{Lambda} scattering length leads us to speculate on the possible existence of {eta}-mesic hypernuclei. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 277419
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BRANCHING RATIO
COUPLED CHANNEL THEORY
ETA MESONS
HYPERNUCLEI
KAON MINUS-PROTON INTERACTIONS
LAMBDA PARTICLES
NEUTRONS
PION MINUS-PROTON INTERACTIONS
RESONANCE
S WAVES
SCATTERING LENGTHS
TOTAL CROSS SECTIONS