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Study of the Hyperon-Nucleon Interaction via Final-State Interactions in Exclusive Reactions.

by Nicholas Zachariou and Daniel Watts and Yordanka Ilieva

This is not the current version.

Submission summary

As Contributors: Nicholas Zachariou
Preprint link: scipost_201910_00040v1
Date submitted: 2019-10-28 01:00
Submitted by: Zachariou, Nicholas
Submitted to: SciPost Physics Proceedings
Proceedings issue: 24th European Few Body Conference (University of Surrey, U.K.)
Academic field: Physics
  • Nuclear Physics - Experiment
Approach: Experimental


A novel approach that allows access to long-sought information on the Hyperon-Nucleon (YN) interaction was developed by producing a hyperon beam within a few-body nuclear system, and studying final-state interactions. The determination of polarisation observables, and specifically the beam spin asymmetry, in exclusive reactions allows a detailed study of the various final-state interactions and provides us with the tools needed to isolate kinematic regimes where the YN interaction dominates. High-statistics data collected using the CLAS detector housed in Hall-B of the Thomas Jefferson laboratory allows us to obtain a large set of polarisation observables and place stringent constraints on the underlying dynamics of the YN interaction.

Current status:
Has been resubmitted

Submission & Refereeing History

Resubmission 1910.12506v2 on 10 December 2019

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Submission scipost_201910_00040v1 on 28 October 2019

Reports on this Submission

Anonymous Report 1 on 2019-12-5 (Invited Report)

  • Cite as: Anonymous, Report on arXiv:scipost_201910_00040v1, delivered 2019-12-05, doi: 10.21468/SciPost.Report.1368


The paper is devoted to experimental study of possibility to study YN interaction via the final state interaction of the exclusive \gamma + d \to K^+ Lambda n reaction. Beam spin asymmetries obtained for the three different mechanisms contributing to the FSI of the reaction demonstrate that YN interaction plays the major role, therefore, the reaction can be used for study the hyperon-nucleon interaction. I think the paper deserves publication after some minor revisions.

Requested changes

1. As far as I know, mechanism (a) at Fig.1 called by the authors as "quasi-free /Lambda hotoproduction" is rather "quasi-free /Lambda K^+ photoproduction"
2. What do the dots at the end of Eq.(1) mean? Is it some expansion?
3. Notations at Figs. 5 and 6 are too small and hardly readable
4. "Crosssections", "cross sections" and "cross-sections" appearing in the paper should be somehow unified
5. Misprints: "offthe" -> "off the" below Fig.1; "allows is" -> "allows us" line 6 from below at p.3

  • validity: ok
  • significance: ok
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

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