Measurement of the Born cross section for e⁺e^- → p K^- K^- Ξ⁺ at √(s) = 3.5-4.9 GeV

2025/08/15 by BESIII Collaboration, Ablikim, M., Achasov, M. N. +695
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2508.11276

Abstract

Using e⁺ e^- collision data corresponding to a total integrated luminosity of 20 \rm fb^-1 collected with the BESIII detector at the BEPCII collider, we present a measurement of the Born cross section for the process e⁺e^- → p K^-K^-Ξ⁺ at 39 center-of-mass energies between 3.5 and 4.9 GeV with a partial reconstruction technique. By performing a fit to the dressed cross section of e⁺e^-→ p K^- K^-Ξ⁺ with a power law function for continuum production and one resonance at a time for the ψ(3770), ψ(4040), ψ(4160), ψ(4230), ψ(4360), ψ(4415) or ψ(4660), respectively, the upper limits for the product of partial electronic width and branching fraction into the final state p K^- K^- Ξ⁺ for these resonances are determined at the 90% confidence level.

Citations

• Colloquium: Hadron Production in Open-charm Meson Pair at e⁺e^- Collider
• Data driven isospin analysis of timelike octet baryons electromagnetic form factors and charmonium decay into baryon-anti-baryon
• An Iterative Weighting Method to Apply ISR Correction to e⁺e^- Hadronic Cross-section Measurements
• The hidden-charm pentaquark and tetraquark states
• Geant4 developments and applications
• Coherent Exclusive Exponentiation for Precision Monte Carlo Calculations of Fermion Pair Production / Precision Predictions for (Un)stable W+W- Pairs
• The precision Monte Carlo event generator for two-fermion final states in collisions
• Photos — a universal Monte Carlo for QED radiative corrections in decays

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