Measurement of the differential cross sections of the Sigma-p elastic scattering in momentum range of 470 to 850 MeV/c

2021/04/28 by J-PARC E Collaboration, K. Miwa, PARC E40 Collaboration +160 · 1 citation
Engineering · Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Superconducting Materials and Applications #nucl-ex

paper · pdf · doi:10.48550/arxiv.2104.13608

openalex publication_date 2021/04/28 · openalex created_date 2021/05/10 · arxiv created 2021/07/24 · arxiv updated 2021/07/27 · openalex updated_date 2026/08/03

Abstract

A high statistics Σp scattering experiment has been performed at the J-PARC Hadron Experimental Facility. Data for momentum-tagged Σ^- running in a liquid hydrogen target were accumulated by detecting the π^-p → K⁺Σ^- reaction with a high intensity π^- beam of 20 M/spill. Differential cross sections of the Σ^-p elastic scattering were derived with a drastically improved accuracy by identifying the largest statistics of about 4,500 events from 1.72 × 10⁷ Σ^-. The derived differential cross section shows a clear forward-peaking angular distribution for a Σ^- momentum range from 470 to 850 MeV/c. The accurate data will impose a strong constraint on the theoretical models of the baryon-baryon interactions.

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• Precise measurement of differential cross sections of the Σ-p --> Λ n reaction in momentum range 470-650 MeV/c

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