Abstract
The Alt-Grassberger-Sandhas N-body theory is used to study interaction of η mesons with d, He3, and He4. Separable expansion of the subamplitudes is adopted to convert the integral equations into the quasi-two-body form. The resulting formalism is applied to fit the existing data for low-energy η production of few-nucleon targets. On the basis of this fitting procedure the scattering lengths aηd, aηHe3, aηHe4 as well as the subthreshold behavior of the elementary ηN scattering amplitude are obtained.
| Original language | English |
|---|---|
| Article number | 044001 |
| Journal | Physical Review C |
| Volume | 97 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 13 Apr 2018 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Systematic few-body analysis of ηd, η He 3, and η He 4 interaction at low energies SYSTEMATIC FEW-BODY ANALYSIS of ηd, ⋯ A. FIX and O. KOLESNIKOV. / Fix, A.; Kolesnikov, O.
In: Physical Review C, Vol. 97, No. 4, 044001, 13.04.2018.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Systematic few-body analysis of ηd, η He 3, and η He 4 interaction at low energies SYSTEMATIC FEW-BODY ANALYSIS of ηd, ⋯ A. FIX and O. KOLESNIKOV
AU - Fix, A.
AU - Kolesnikov, O.
PY - 2018/4/13
Y1 - 2018/4/13
N2 - The Alt-Grassberger-Sandhas N-body theory is used to study interaction of η mesons with d, He3, and He4. Separable expansion of the subamplitudes is adopted to convert the integral equations into the quasi-two-body form. The resulting formalism is applied to fit the existing data for low-energy η production of few-nucleon targets. On the basis of this fitting procedure the scattering lengths aηd, aηHe3, aηHe4 as well as the subthreshold behavior of the elementary ηN scattering amplitude are obtained.
AB - The Alt-Grassberger-Sandhas N-body theory is used to study interaction of η mesons with d, He3, and He4. Separable expansion of the subamplitudes is adopted to convert the integral equations into the quasi-two-body form. The resulting formalism is applied to fit the existing data for low-energy η production of few-nucleon targets. On the basis of this fitting procedure the scattering lengths aηd, aηHe3, aηHe4 as well as the subthreshold behavior of the elementary ηN scattering amplitude are obtained.
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U2 - 10.1103/PhysRevC.97.044001
DO - 10.1103/PhysRevC.97.044001
M3 - Article
VL - 97
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 4
M1 - 044001
ER -