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Λp Elastic Scattering in the CLAS Detector.
- Source :
- AIP Conference Proceedings; 2019, Vol. 2130 Issue 1, p020004-1-020004-12, 12p
- Publication Year :
- 2019
-
Abstract
- The elastic scattering process Λp → Λp offers insights on multiple problems in nuclear physics. SU(3)<subscript>F</subscript> symmetry implies a close agreement between the Λp and pp scattering cross sections. The Λp elastic scattering cross section can also illuminate the structure of neutron stars. A data-mining project was started using multiple CLAS data sets taken for other purposes with photon beams on a long liquid hydrogen target. A Λ produced in a process such as γp → K<superscript>+</superscript> Λ can interact with a second proton inside the target before either decaying or leaving the target. The good angular acceptance and momentum resolution of CLAS make it well-suited for this type of analysis, even though it was not designed for such a measurement. The scattered Λ can be identified from the π<superscript>−</superscript> p invariant mass. The four-vector of the initial Λ is then reconstructed in the process Xp → Λp, which shows a strong peak at the Λ mass with roughly twice the number of events as the existing world data sample. This observation opens up the possibility of other measurements using secondary beams of short-lived particles. This paper will discuss the current status of the analysis, and our plans for future work on this project. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 2130
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 137710863
- Full Text :
- https://doi.org/10.1063/1.5118372