- By:
- Bock, Friederike ; Read Jr, Kenneth F; Novitzky, Norbert ; Schambach, Joachim J; Glimos, Ewa
- Journal Name:
- The European Physical Journal C
- Page Number:
- 1-16
- Volume:
- 86
- Issue Number:
- 2
- Publication Date:
- June 11, 2026
- View DOI Listing:
- https://doi.org/10.1140/epjc/s10052-025-15095-9
Abstract
The measurement of + production in pp collisions at √s = 13 TeV is presented. The measurement is performed at midrapidity in both minimum-bias and high multiplicity pp collisions at √s = 13 TeV. The + is reconstructed via its weak-decay topology in the decay channel + →p+π0withπ0 →γ +γ.Inanovelapproach, the neutral pion is reconstructed by combining photons that convert in the detector material with photons measured in the calorimeters. The transverse-momentum (pT) distributions of the + and its rapidity densities dN/dy in both event classes are reported. The pT spectrum in minimum-bias collisions is compared to QCD-inspired event generators. The ratio of + to previously measured baryons is in good agreement with calculations from the Statistical Hadronization Model. The high efficiency and purity of the novel reconstruction method for + presented here will enable future studies of the interaction of + with protons in the context of femtoscopic measurements, which could be crucial for understanding the equation of state of neutron stars.
