Search for Evidence of Baryogenesis and Dark Matter in B⁺ → ψ_D + p Decays at BABAR

2023/06/14 by The BABAR Collaboration
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2306.08490

openalex publication_date 2023/06/14 · openalex created_date 2023/06/17 · openalex updated_date 2026/07/28

Abstract

A new dark sector anti-baryon, denoted ψ_D, could be produced in decays of B mesons. This letter presents a search for B⁺ → ψ_D + p (and the charge conjugate) decays in e⁺e^- annihilations at 10.58 GeV, using data collected in the ~\babar~ experiment. Data corresponding to an integrated luminosity of 398 fb^-1 are analyzed. No evidence for a signal is observed. Branching fraction upper limits in the range from 10^-7 -- 10^-5 are obtained at 90% confidence level for masses of 1.0 < m_ψ_D < 4.3 GeV/c². The result is also reinterpreted to provide the first limits on a supersymmetric model with R-parity violation and a light neutralino.

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