Cabibbo suppressed hyperon production off nuclei induced by antineutrinos
Metadatos
Afficher la notice complèteAuteur
Benitez Galan, Maria; Alvarez Ruso, Luis; Rafi Alam, Mohammad; Ruiz Simó, Ignacio Luis; Vicente Vacas, M. J.Editorial
American Physical Society
Date
2024-02-05Referencia bibliográfica
M. Benitez Galan, L. Alvarez-Ruso, M. Rafi Alam, I. Ruiz Simo, and M. J. Vicente Vacas. Cabibbo suppressed hyperon production off nuclei induced by antineutrinos. Phys. Rev. D 109, 033001 (2024) [10.1103/PhysRevD.109.033001]
Patrocinador
Spanish Ministry of Science under Grants No. PID2020–114767 GB-I00 and No. PID2020–112777 GB-I00, funded by MCIN/AEI/10.13039/501100011033; FEDER/Junta de Andalucia-Consejeria de Transformacion Economica, Industria, Conocimiento y Universidades/A-FQM-390-UGR20; Junta de Andalucia (Grant No. FQM-225); Generalitat Valenciana under Contract No. PROMETEO/2020/023; “Planes Complementarios de I+D+i” program (Grant No. ASFAE/2022/022) by MCIN with funding from the European Union NextGenerationEU and Generalitat Valenciana; Spanish Ministry of Science under Grant No. PRE2018-083794, funded by MCIN/AEI/10.13039/501100011033 and by “ESF Investing in your future”Résumé
In this work, we study the production of Σ and Λ hyperons in strangeness-changing ΔS = −1 charged-current interactions of muon antineutrinos on nuclear targets. At the nucleon level, besides quasielastic scattering, we consider the inelastic mechanism in which a pion is produced alongside the hyperon. Its relevance for antineutrinos with energies below 2 GeV is conveyed in integrated and differential cross sections. We observe that the distributions on the angle between the hyperon and the final lepton are clearly different for quasielastic and inelastic processes. Hyperon final-state interactions, modeled with an intranuclear cascade, lead to a significant transfer from primary produced Σ’s into final Λ’s. They also cause considerable energy loss, which is apparent in hyperon energy distributions. We have investigated Λ production off 40Ar in the conditions of the recently reported MicroBooNE measurement. We find that the Λπ contribution, dominated by Σ*(1385) excitation, accounts for about one third of the cross section.