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T: Fachverband Teilchenphysik

T 74: Flavour Physics V

T 74.8: Vortrag

Donnerstag, 3. April 2025, 18:00–18:15, VG 1.104

Search for the decays Ξ_b⁰ → Ξ⁰ J/ψ and Ξ_b⁰ → Ξ⁰ ψ(2S) at the LHCb experiment — Johannes Albrecht¹, Vitalii Lisovskyi², •Leandra Moeser¹, and Janina Nicolini³ — ¹TU Dortmund University, Dortmund, Germany — ²Aix-Marseille Université, CNRS/IN2P3, CPPM, Marseille, France — ³CERN

Weak decays of heavy-quark baryons provide an opportunity to probe for effects beyond the Standard Model, complementary to searches in meson decays. Given the high masses of b-baryons, they are primarily studied at hadron colliders. The LHCb experiment is ideally suited to investigate such weakly decaying b-baryons.
The current status of the search for the tree-level decays Ξ_b⁰ → Ξ⁰ J/ψ and Ξ_b⁰ → Ξ⁰ ψ(2S) is presented. The used data was collected at the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb⁻¹. The challenges posed by the reconstruction of neutral decay chains are discussed and the calibration of the simulation is presented.

Keywords: LHCb; Data Analysis; b-baryons