TY - JOUR

T1 - Search for hyperon Δs= Δq violating decay Ξ0 → ς-e+νe

AU - BESIII Collaboration

AU - Achasov, M. N.

AU - Chen, C.

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Search for hyperon ΔS=ΔQ violating decay Ξ0→Σ−e+νe / BESIII Collaboration // Physical Review D. – 2023. – Vol. 107, No. 1. – P. 012002. – DOI 10.1103/physrevd.107.012002.

PY - 2023/1/19

Y1 - 2023/1/19

N2 - Using a data sample of (1.0087±0.0044)×1010 J/ψ decay events collected with the BESIII detector at the center-of-mass energy of s=3.097 GeV, we present a search for the hyperon semileptonic decay Ξ0→ς-e+νe which violates the ΔS=ΔQ rule. No significant signal is observed, and the upper limit on the branching fraction B(Ξ0→ς-e+νe) is determined to be 1.6×10-4 at the 90% confidence level. This result improves the previous upper limit result by about one order of magnitude.

AB - Using a data sample of (1.0087±0.0044)×1010 J/ψ decay events collected with the BESIII detector at the center-of-mass energy of s=3.097 GeV, we present a search for the hyperon semileptonic decay Ξ0→ς-e+νe which violates the ΔS=ΔQ rule. No significant signal is observed, and the upper limit on the branching fraction B(Ξ0→ς-e+νe) is determined to be 1.6×10-4 at the 90% confidence level. This result improves the previous upper limit result by about one order of magnitude.

UR - https://www.mendeley.com/catalogue/62d2d27f-5e43-3553-88b4-45fb19d71858/

UR - https://www.elibrary.ru/item.asp?id=60533852

U2 - 10.1103/PhysRevD.107.012002

DO - 10.1103/PhysRevD.107.012002

M3 - Article

VL - 107

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 1

M1 - 012002

ER -