Document Type

Article

Publication Date

2021

DOI

10.1103/PhysRevLett.127.272303

Publication Title

Physical Review Letters

Volume

127

Issue

27

Pages

272303 (1-7)

Abstract

Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this is true, then hyperon-nucleon interactions will play a significant part in the neutron star equation of state. Yet, compared to other elastic scattering processes, there is very little data on Λ-N scattering. This experiment utilized the CEBAF Large Acceptance Spectrometer (CLAS) detector to study the Λp→Λp elastic scattering cross section in the incident Λ momentum range 0.9-2.0  GeV/c. These are the first data on this reaction since the 1970s. The new cross sections have significantly better accuracy and precision than the existing world data, and the techniques developed here can also be used in future experiments.

Comments

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Original Publication Citation

Rowley, J., Compton, N., Djalali, C. ... Yurov, M., Zhang, J., & Zhao, Z. W. (2021) Improved Λp elastic scattering cross sections between 0.9 and 2.0  GeV/c as a main ingredient of the neutron star equation of state. Physical Review Letters, 127(27), 1-7, Article 272303. https://doi.org/10.1103/PhysRevLett.127.272303

ORCID

0000-0002-4136-2572 (Bulumulla), 0000-0003-2243-6836 (Kuhn), 0000-0002-3598-4594 (Pandey),

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