p-O contribution

Thursday 21 Nov 2024, 09:00 → 11:00 Europe/Zurich

CERN

pO_CMS_Forward.pdf

1 Michael

Speaker: Michael Pitt (CERN)

1) Measurements of charged particle multiplicities and composition in the central region. In CMS, we have demonstrated in the past competitive particle ID, so it seems that we can deliver high-quality data to be used for future constraints on the hadronic model (slide 19)

 

2) An interesting extension to (1) can be the inclusion of the forward detectors. The difference between the models shown in slide 20 is quite large, and so far, no one has been able to look at this phase space. Measuring track multiplicities in the central region for events with tagged protons or neutrons may already be a good topic for a publication (w/o introducing particle ID).

 

3) Oxygen dissociation: We have low-energy data on fragment formation. In the Oxygen case, few spectators are expected (compared to Pb), so counting neutrons (+measuring their spectra) can be a stand-alone project. A nice addition here will be adding the EM component, but it depends on the performance of ZDC EM modules, and I don't know if they will be calibrated before the run.

 

4) Oxygen fragments in PPS: This is not clear yet if the insertion of such detectors is possible. Some assessments will be done before the end of the year, and I hope I can tell you more about it later.

 

5) elastic scattering: It is not clear yet if dedicated detectors for elastic scattering can be introduced. I will know better next week as I will talk to beam experts to understand what can and cannot be done in the pO run concerning the LHC magnets settings.