Three-body interactions from the finite-volume QCD spectrum
نویسندگان
چکیده
We perform a fit of the finite-volume QCD spectrum three pions at maximal isospin to constrain three-body force. use unitarity-based relativistic three-particle quantization condition, with GWUQCD obtained 315 MeV and 220 pion mass in two-flavor QCD. For heavier we find that data is consistent constant contact term close zero, whereas for lighter see statistically significant energy dependence tension prediction leading order ChPT. Our results also suggest enough levels, two-body amplitude could be constrained.
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ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.104.014501