TY - JOUR
T1 - Five-body calculation of s-wave n-4He scattering at next-to-leading order pionless effective field theory
AU - Bagnarol, Mirko
AU - Schäfer, Martin
AU - Bazak, Betzalel
AU - Barnea, Nir
N1 - Publisher Copyright:
© 2023 The Author(s)
PY - 2023/9/10
Y1 - 2023/9/10
N2 - We present the first five-body calculations of s-wave n-4He scattering within leading order and next-to-leading order (NLO) pionless effective field theory (π̸EFT). Using an harmonic oscillator trap technique and π̸EFT fitted to just six well-established experimental parameters, we predict the s-wave n-4He phase shifts, scattering length an4He 1/2(NLO)=2.47(4num.)(17theor.)fm, and effective range rn4He 1/2(NLO)=1.384(3num.)(211theor.)fm in agreement with experiment. The apparent cutoff independence of our results is used to estimate the theoretical errors coming as an integral part of our final results.
AB - We present the first five-body calculations of s-wave n-4He scattering within leading order and next-to-leading order (NLO) pionless effective field theory (π̸EFT). Using an harmonic oscillator trap technique and π̸EFT fitted to just six well-established experimental parameters, we predict the s-wave n-4He phase shifts, scattering length an4He 1/2(NLO)=2.47(4num.)(17theor.)fm, and effective range rn4He 1/2(NLO)=1.384(3num.)(211theor.)fm in agreement with experiment. The apparent cutoff independence of our results is used to estimate the theoretical errors coming as an integral part of our final results.
UR - http://www.scopus.com/inward/record.url?scp=85165936538&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2023.138078
DO - 10.1016/j.physletb.2023.138078
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AN - SCOPUS:85165936538
SN - 0370-2693
VL - 844
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 138078
ER -