Search for baryon and lepton number violating decays \boldsymbolD → pℓ

2023/10/11 by S. Maity, Belle Collaboration, Maity, S. +258
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2310.07412

openalex publication_date 2023/10/11 · openalex created_date 2023/10/13 · openalex updated_date 2026/07/30

Abstract

We search for the baryon and lepton number violating charm decays, D → pℓ, where D is either a D⁰ or a D⁰ and ℓ is a muon or an electron, using a data sample of 921 fb^-1 collected by the Belle detector at the KEKB asymmetric energy e⁺e^- collider. In the absence of significant signals, we set upper limits on the branching fractions in the range (5 - 8) × 10^-7 at a 90% confidence level, depending on the decay mode.

Related

• Search for rare or forbidden decays of the D⁰ meson
• Search for D⁰ -> ℓ⁺ℓ^- decays and for CP violation in D⁺_(s) → K_S⁰π⁺ and D⁺_(s) → K_S⁰K⁺ at BELLE
• Search for lepton flavor violating τ→ ℓ V⁰ decays at Belle
• Search for lepton flavor-violating decay modes B⁰ → K^{∗ 0}τ^±ℓ^∓ (ℓ = e,μ) with hadronic B-tagging at Belle and Belle II
• Search for Lepton and Baryon Number Violating tau^- Decays into pgamma, ppi⁰, Lambdapi^-, and Lambda pi^-