A precision measurement of the three-proton correlation function in pp collisions at 13.6 TeV provides the first direct probe of unbound three-baryon continuum dynamics and shows sensitivity to the partial-wave structure of the nucleon-nucleon interaction.
Effect of the N3LO three-nucleon contact interaction on p-d scattering observables
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
A unitary transformation allows to remove redundant terms in the two-nucleon (2N) contact interaction at the fourth order (N3LO) in the low-energy expansion of Chiral Effective Field Theory. In so doing a three-nucleon (3N) interaction is generated. We express its short-range component in terms of five combinations of low-energy constants (LECs) parametrizing the N3LO 2N contact Lagrangian. Within a hybrid approach, in which this interaction is considered in conjunction with the phenomenological AV18 2N potential, we show that the involved LECs can be used to fit very accurate data on polarization observables of low-energy $p-d$ scattering, in particular the $A_y$ asymmetry. The resulting interaction is of the right order of magnitude for a N3LO contribution.
citation-role summary
background 1
citation-polarity summary
fields
nucl-ex 1years
2026 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
Three-baryon femtoscopy as an effective 3$\rightarrow$3 scattering experiment
A precision measurement of the three-proton correlation function in pp collisions at 13.6 TeV provides the first direct probe of unbound three-baryon continuum dynamics and shows sensitivity to the partial-wave structure of the nucleon-nucleon interaction.