Studies of ω(782) → π0γ → 3γ in p+p collisions at √s = 7 TeV with the ALICE electromagnetic calorimeters

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Théâtre National (Centre Bonlieu)

Théâtre National

Centre Bonlieu

Board: 28
Poster Jets


Renzhuo Wan (IOPP-CCNU, Wuhan, China and IPHC-UDS, Strasbourg, France)


ALICE electromagnetic calorimeters, PHOS (PHOton Spectrometer) and EMCAL (ElectroMagnetic CALorimeter), have the capability to detect and identify photons over a large pT range. The measurement of vector meson ω(782) to π0 γ channel thanks to the calorimeters is interesting both as a test of pQCD and as a probe to explore the properties of hot-dense matter created in heavy-ion collisions. Two complementary analysis techniques are explored: one is only based on the three photon invariant mass, while the other takes profit of the cluster shower shapes to constrain the analysis. Here we show the expected pT reach with these techniques. Prospects on the measurement of π0 γ invariant mass studies in pp collisions at √s = 7 TeV will also be presented.

Primary author

Renzhuo Wan (IOPP-CCNU, Wuhan, China and IPHC-UDS, Strasbourg, France)

Presentation materials