Speaker
Description
The first measurements of the transverse momentum (pT) spectra, integrated yields and mean pT of Σ0 and anti-Σ0 hyperons in pp collisions at s√=7 TeV at the LHC are presented. The Σ0(anti-Σ0) signal is reconstructed via its electromagnetic decay channel Λ (anti-Λ)γ. The Λ (anti-Λ) baryon is reconstructed via its decay into p + π− (anti-p+π+), while the photon is detected by exploiting the unique capability of the ALICE detector to measure low-energy photons via conversion into e+e− pairs in the detector material.
The yield of Σ0 is compared to that of the Λ baryon, which has the same quark content but different isospin. These data contribute to the understanding of hadron production mechanisms and provide a reference for constraining QCD-inspired models and tuning Monte Carlo event generators such as PYTHIA.
In addition, the feasibility of a search for a bound state of proton, neutron and Σ0 (Σ0-hypernuclei 3Σ0H) is presented, based on the luminosities foreseen for the LHC Runs 3 and 4.
| The speaker is a student or young scientist | No |
|---|---|
| Section | 3. Intermediate and high energies, heavy ion collisions |
