- By:
- Bock, Friederike ; Read Jr, Kenneth F; Novitzky, Norbert ; Schambach, Joachim J; Glimos, Ewa
- Journal Name:
- Physical Review D
- Page Number:
- 92002-92002
- Volume:
- 112
- Issue Number:
- 9
- Publication Date:
- June 22, 2026
- View DOI Listing:
- https://doi.org/10.1103/v4mh-3r8z
Abstract
A signal consistent with the Ω(2012) baryon has been observed with a significance of 15𝜎 in pp collisions at √𝑠=13 TeV at the LHC. In this paper, the analysis technique is described and measurements of the mass and width of the Ω(2012) are reported, along with the first measurement of its transverse-momentum spectrum and yield. This paper corroborates the observation by the Belle Collaboration of this excited Ω state and the observation that the Ω(2012) has a rather narrow width for a strongly decaying resonance. The yield measurement is combined with a statistical thermal model calculation of strange baryon yield ratios to obtain estimates of the Ω(2012)− →Ξ¯K branching ratios. These results will improve our understanding of the internal structure and mass spectrum of excited baryon states and serve as a baseline for searches regarding modifications of these properties in high-temperature media.
