Search for the radiative $$ {\Xi}_b^{-} $$ → Ξ−γ decay

Journal article

A bstract The first search for the rare radiative decay $$ {\Xi}_b^{-} $$ Ξ b − → Ξ − γ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb − 1 . The $$ {\Xi}_b^{-} $$ Ξ b − → Ξ − J/ψ channel is used as normalization. No $$ {\Xi}_b^{-} $$ Ξ b − → Ξ − γ signal is found and an upper limit of $$ \mathcal{B} $$ B ( $$ {\Xi}_b^{-} $$ Ξ b − → Ξ − γ ) < 1 . 3 × 10 − 4 at 95% confidence level is obtained.

Authors: Aaij, R; Abdelmotteleb, ASW; Abellán Beteta, C; Ackernley, T; Adeva, B

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2022
• Issue: 1
• Pages: 69
• Article number: 69
• Publication date: 2022-01-14
• DOI: 10.1007/jhep01(2022)069
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: Nuclear physics; Luminosity; Normalization (sociology); Radiative transfer; Quantum mechanics; Physics; Particle physics; Mathematics; Limit (mathematics); Proton; Astrophysics