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pA and ppA correlation functions
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DOI：10.1103/PhysRevC.110.054004.png)
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Abstract
En 中文
In this work we present the study of pA and ppA scattering processes using femtoscopic correlation functions. This observable has been recently used to access the low-energy interaction of hadrons emitted in the final state of high-energy collisions, delivering unprecedented precision information of the interaction among strange hadrons. The formalism for particle pairs is well established and it relates the measured correlation functions with the scattering wave function and the emission source. In the present work we analyze the NNA scattering in free space and relate the corresponding wave function to the ppA correlation measurement performed by the ALICE collaboration. The three-body problem is solved using the hyperspherical adiabatic basis. Regarding the pA and ppA interactions, different models are used and their impact on the correlation function is studied. The three-body force considered in this work is anchored to describe the binding energy of the hypertriton and to give a good description of the two four-body hypernuclei. As a main result we have observed a huge, low-energy peak in the ppA correlation function, mainly produced by the J pi = 1/2+ three-body state. The study of this peak from an experimental as well as a theoretical point of view will provide important constraints to the twoand three-body interactions.
Keywords:
HYPERON-NUCLEON INTERACTION
EFFECTIVE-FIELD THEORY
BINDING-ENERGIES
PROTON
HYPERNUCLEI
SYSTEM
Journal
IF:
3.4
Papers:
2.9W
Citations:
5.7W
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