First Study of Reaction Ξ0n → Ξ-p Using Ξ0 -Nucleus Scattering at an Electron-Positron Collider

Sonia Kabana; Vindhyawasini Prasad; BESIII Collaboration

doi:10.1103/PHYSREVLETT.130.251902

First Study of Reaction Ξ0n → Ξ-p Using Ξ0 -Nucleus Scattering at an Electron-Positron Collider

Título traducido de la contribución: Primer estudio de la reacción Ξ0n → Ξ-p utilizando dispersión de núcleo Ξ0 en un colisionador electrón-positrón

Sonia Kabana
, Vindhyawasini Prasad
, BESIII Collaboration

Instituto de Alta Investigación

Universidad de Tarapacá

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

20 Citas (Scopus)

Resumen

Utilizando eventos de (1,0087±0,0044)×10¹0 J/ψ recopilados con el detector BESIII en el anillo de almacenamiento BEPCII, se estudia el proceso Ξ0n→Ξ-p, donde el barión Ξ0 se produce en el proceso J/ψ→Ξ0Ξ¯0 y el neutrón es un componente de los núcleos de Be₂, C₁₂ y Au₂₁ en la tubería del haz. Se observa una señal clara con una significancia estadística de 7,1σ. La sección eficaz de la reacción Ξ0+Be₂₁₂₁₂+Be₂ se determina como σ(Ξ0+Be₂₁₂₁₂+Be₂)=(22,1±5,3stat±4,5sys) mb con un momento Ξ0 de 0,818 GeV/c, donde la primera incertidumbre es estadística y la segunda, sistemática. No se observa ninguna señal significativa de H-dibarión en el estado final Ξ-p. Este es el primer estudio de interacciones hiperón-nucleón en colisiones electrón-positrón y abre una nueva vía para dicha investigación.

Título traducido de la contribución	Primer estudio de la reacción Ξ0n → Ξ-p utilizando dispersión de núcleo Ξ0 en un colisionador electrón-positrón
Idioma original	Inglés
Número de artículo	251902
Páginas (desde-hasta)	1-9
Número de páginas	9
Publicación	Physical Review Letters
Volumen	130
N.º	25
DOI	https://doi.org/10.1103/PHYSREVLETT.130.251902
Estado	Publicada - 23 jun. 2023

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title = "First Study of Reaction Ξ0n → Ξ-p Using Ξ0 -Nucleus Scattering at an Electron-Positron Collider",

abstract = "Using (1.0087±0.0044)×1010 J/ψ events collected with the BESIII detector at the BEPCII storage ring, the process Ξ0n→Ξ-p is studied, where the Ξ0 baryon is produced in the process J/ψ→Ξ0Ξ¯0 and the neutron is a component of the Be9, C12, and Au197 nuclei in the beam pipe. A clear signal is observed with a statistical significance of 7.1σ. The cross section of the reaction Ξ0+Be9→Ξ-+p+Be8 is determined to be σ(Ξ0+Be9→Ξ-+p+Be8)=(22.1±5.3stat±4.5sys) mb at the Ξ0 momentum of 0.818 GeV/c, where the first uncertainty is statistical and the second is systematic. No significant H-dibaryon signal is observed in the Ξ-p final state. This is the first study of hyperon-nucleon interactions in electron-positron collisions and opens up a new direction for such research.",

author = "Sonia Kabana and Vindhyawasini Prasad and \{The BESIII collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s).",

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doi = "10.1103/PHYSREVLETT.130.251902",

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AU - Kabana, Sonia

AU - Prasad, Vindhyawasini

AU - The BESIII collaboration

PY - 2023/6/23

Y1 - 2023/6/23

N2 - Using (1.0087±0.0044)×1010 J/ψ events collected with the BESIII detector at the BEPCII storage ring, the process Ξ0n→Ξ-p is studied, where the Ξ0 baryon is produced in the process J/ψ→Ξ0Ξ¯0 and the neutron is a component of the Be9, C12, and Au197 nuclei in the beam pipe. A clear signal is observed with a statistical significance of 7.1σ. The cross section of the reaction Ξ0+Be9→Ξ-+p+Be8 is determined to be σ(Ξ0+Be9→Ξ-+p+Be8)=(22.1±5.3stat±4.5sys) mb at the Ξ0 momentum of 0.818 GeV/c, where the first uncertainty is statistical and the second is systematic. No significant H-dibaryon signal is observed in the Ξ-p final state. This is the first study of hyperon-nucleon interactions in electron-positron collisions and opens up a new direction for such research.

AB - Using (1.0087±0.0044)×1010 J/ψ events collected with the BESIII detector at the BEPCII storage ring, the process Ξ0n→Ξ-p is studied, where the Ξ0 baryon is produced in the process J/ψ→Ξ0Ξ¯0 and the neutron is a component of the Be9, C12, and Au197 nuclei in the beam pipe. A clear signal is observed with a statistical significance of 7.1σ. The cross section of the reaction Ξ0+Be9→Ξ-+p+Be8 is determined to be σ(Ξ0+Be9→Ξ-+p+Be8)=(22.1±5.3stat±4.5sys) mb at the Ξ0 momentum of 0.818 GeV/c, where the first uncertainty is statistical and the second is systematic. No significant H-dibaryon signal is observed in the Ξ-p final state. This is the first study of hyperon-nucleon interactions in electron-positron collisions and opens up a new direction for such research.

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First Study of Reaction Ξ0n → Ξ-p Using Ξ0 -Nucleus Scattering at an Electron-Positron Collider

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