WA70 experiment
The WA70 experiment was a collaboration between the Universities of Geneva, Glasgow, Liverpool, Milan and Neuchatel using the facilities of the OMEGA spectrometer at CERN.[1]
The purpose of the experiment was to study
direct photons produced in proton-proton and proton-pion collisions within a fixed target of liquid hydrogen at the CERN SPS.[2] The experiment was proposed on 6 August 1980 [2] and formally approved on 22 October 1981.[3] Preliminary data was taken in 1983 with physics runs in 1984, 1985 and 1986.[4]
A novel feature of the experiment was a liquid scintillator
direct photons and other particles produced by the collisions. This was situated downstream of the liquid hydrogen
target.
Results were presented at scientific conferences and published in scientific journals.[6] The measured cross section for direct photon production was in agreement with predictions from perturbative QCD.[7]
The spokesperson for the experiment was Professor Michel Martin,Director General).
References
- S2CID 119370172.
- ^ a b c Bachmann, L. (6 August 1980). Proposal to the SPSC : study of direct photon events in hadronic collisions (PDF) (Report). CERN. CERN-SPSC-80-61 ; SPSC-P-147. Retrieved 28 January 2020.
- ^ Decision of the 54th Meeting of the Research Board held on 22 October 1981 (PDF) (Report). CERN. 23 October 1981. CERN-DG-RB-81-21. Retrieved 28 January 2020.
- ^ "WA70/OMEGA/DIRPHOTON : Study of Direct Photon Events in Hadronic Collisions". The CERN Experimental Programme. CERN. Retrieved 28 January 2020.
- .
- ^ "List of WA70 publications recorded by CERN". CERN Document Server (CDS). CERN. Retrieved 28 January 2020.
- ISSN 0258-1221.
- ^ "Recorded WA70 publications with Fabiola Gianotti as author". INSPIRE-HEP. Retrieved 28 January 2020.