Differential cross sections for Λ(1520) using photoproduction at CLAS

The CLAS Collaboration

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Abstract

The reaction γp→K+Λ(1520) using photoproduction data from the CLAS g12 experiment at Jefferson Lab is studied. The decay of Λ(1520) into two exclusive channels, ς+π- and ς-π+, is studied from the detected K+, π+, and π- particles. A good agreement is established for the Λ(1520) differential cross sections with the previous CLAS measurements. The differential cross sections as a function of center-of-mass angle are extended to higher photon energies. Newly added are the differential cross sections as a function of invariant four-momentum transfer t, which is the natural variable to use for a theoretical model based on a Regge-exchange reaction mechanism. No new N∗ resonances decaying into the K+Λ(1520) final state are found.

Original languageEnglish (US)
Article number025206
JournalPhysical Review C
Volume103
Issue number2
DOIs
StatePublished - Feb 2021

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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