Details

Autor(en) / Beteiligte

• Baglin, C.
• Baird, S.
• Bassompierre, G.
• Borreani, G.
• Brient, J.-C.
• Broll, C.
• Brom, J.-M.
• Bugge, L.
• Buran, T.
• Burq, J.-P.
• Bussière, A.
• Buzzo, A.
• Cester, R.
• Chemarin, M.
• Chevallier, M.
• Escoubes, B.
• Fay, J.
• Ferroni, S.
• Gracco, V.
• Guillaud, J.-P.
• Khan-Aronsen, E.
• Ille, B.
• Kirsebom, K.
• Lambert, M.
• Leistam, L.
• Lundby, A.
• Macri, M.
• Marchetto, F.
• Menichetti, E.
• Mörch, Ch
• Mouellic, B.
• Pastrone, N.
• Petrillo, L.
• Pia, M.G.
• Poole, J.
• Poulet, M.
• Rinaudo, G.
• Santroni, A.
• Severi, M.
• Skjevling, G.
• Stugu, B.

Titel

Direct observation and partial-width measurement of γγ decay of charmonium states

Ist Teil von

• Physics letters. B, , Vol.187 (1), p.191-197

Ort / Verlag

Elsevier B.V

Link zum Volltext

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• As part of the charmonium formation experiment at the CERN Intersecting Storage Rings, we studied the reaction p p →c c →γγ in an antiproton momentum scan through the η c, χ 1, and χ 2 regions. We report events observed in the η c and χ 2 regions, whilst no event was observed in the χ 1 region, as expected for a spin-1 state.