Using (10087±44)×106 J/ψ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via Λ-Λ¯ oscillation in the decay J/ψ→ΛΛ¯. No evidence for Λ-Λ¯ oscillation is observed. The upper limit on the time-integrated probability of Λ-Λ¯ oscillation is estimated to be 1.4×10-6, corresponding to an oscillation parameter less than 2.1×10-18 GeV at 90% confidence level.

Search for Λ- Λ ¯ oscillation in J/ψ → Λ Λ ¯ decay

Amoroso, A.;Bianchi, F.;Destefanis, M.;De Mori, F.;Greco, M.;Maggiora, M.;Marcello, S.;Sosio, S.;Spataro, S.;
2025-01-01

Abstract

Using (10087±44)×106 J/ψ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via Λ-Λ¯ oscillation in the decay J/ψ→ΛΛ¯. No evidence for Λ-Λ¯ oscillation is observed. The upper limit on the time-integrated probability of Λ-Λ¯ oscillation is estimated to be 1.4×10-6, corresponding to an oscillation parameter less than 2.1×10-18 GeV at 90% confidence level.
2025
111
5
052014-1
052014-9
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.111.052014
Baryogenesis & leptogenesis, Symmetries, Baryon & lepton number symmetries, Particle mixing & oscillations
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y.; ...espandi
File in questo prodotto:
File Dimensione Formato  
PhysRevD.111.052014.pdf

Accesso aperto

Descrizione: paper
Tipo di file: PDF EDITORIALE
Dimensione 544.97 kB
Formato Adobe PDF
544.97 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2068742
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact