Search for X(3872)→π⁰π⁰χ_c1,2

2024/08/02 by BESIII Collaboration, Ablikim, M., Achasov, M. N. +644
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2408.01597

Abstract

Using 10.1 fb^-1 of e⁺e^- collision data collected by the BESIII detector with center-of-mass energies between 4.15 GeV and 4.30 GeV, we search for the decays X(3872)→π⁰π⁰χ_c1,2, where the X(3872) is produced in e⁺e^-→γX(3872). No evidence above 3σ is found for either decay. Upper limits at the 90% C.L. on the branching fractions of X(3872)→π⁰π⁰χ_c1,2 normalized to the branching fraction of X(3872)→π⁺π^-J/ψ are set to be B(X(3872)→π⁰π⁰χ_c1)/B(X(3872)→π⁺π^-J/ψ) < 1.1 and B(X(3872)→π⁰π⁰χ_c2)/B(X(3872)→π⁺π^-J/ψ) < 0.5, taking into account both statistical and systematic uncertainties.

Related

• Search for the B⁺_c→ χ_c1(3872)π⁺ decay
• Search for the decays X(3872)→ K_S⁰K^±π^∓ and K^*(892)K at BESIII
• Search for a scalar partner of the X(3872) via ψ(3770) decays into γηη' and γπ⁺π^-J/ψ
• Search for X(3872)→π⁺π^-π⁰ at Belle
• Search for χ_c1→ π⁺π^-η_c via ψ(3686)→γχ_c1