Time resolution study of SiPMs as tracker elements for the ALICE 3 timing layer

Following the present ALICE, a next generation experiment at the LHC is under discussion (for LHC-Run5): ALICE 3. The idea is to have a superior tracking, vertexing, and timing all-silicon detector. For the Particle IDentification via Time Of Flight (PID-TOF), a detector capable of 20 ps time resolution positioned at 1 m from the interaction point is required. For this aim, a huge R&D phase on different technologies has just begun. Preliminary studies will be reported. In particular, the first time resolution study using SiPM detectors directly detecting Minimum Ionizing Particles will be discussed. The results will be also compared with laser measurements.