Details

Autor(en) / Beteiligte

• Alcaraz, J
• Alverson, G
• Azemoon, T
• Baksay, L
• Banerjee, Sw
• Bartalini, P
• Baschirotto, A
• Bertucci, B
• Bilei, G.M
• Böhm, A
• Bourilkov, D
• Burger, W.J
• Casaus, J
• Castellini, G
• Chen, M
• Cifarelli, L
• Clare, I
• Cotorobai, F
• Dai, T.S
• Deiters, K
• Eppling, F.J
• Erné, F.C
• Falciano, S
• Fenyi, B
• Ferroni, F
• Fiandrini, E
• Fisk, I
• Fredj, L
• Furetta, C
• Ganguli, S.N
• Garcia-Abia, P
• Gau, S.S
• Gentile, S
• Gong, Z.F
• Gupta, V.K
• Hasan, A
• Hebbeker, T
• Hofer, H
• Hong, S.J
• Hou, S.R
• Hu, G
• Jones, L.W
• de Jong, P
• Kamyshkov, Yu
• Karyotakis, Y
• Kim, D
• Kim, J.K
• Kirkby, A
• Koutsenko, V
• Krenz, W
• Lapoint, C
• Laurikainen, P
• Lecoq, P
• Le Coultre, P
• Lee, H.J
• Lin, W.T
• Liu, Z.A
• Lu, W
• Luci, C
• Malgeri, L
• Maña, C
• McNally, D
• Metzger, W.J
• Moore, R
• Nahn, S
• Napolitano, M
• Newman, H
• Nippe, A
• Oh, Y.D
• Palomares, C
• Passaleva, G
• Pauss, F
• Perret-Gallix, D
• Rancoita, P.G
• Ren, D
• van Rhee, T
• Rizzo, R
• Romero, L
• Rosselet, Ph
• Rykaczewski, H
• Schäfer, C
• Scholz, N
• Schotanus, D.J
• Schwenke, J
• Shevchenko, S
• Spillantini, P
• Steuer, M
• Stoyanov, B
• Tauscher, L
• Taylor, L
• Ting, Samuel C.C
• Tonutti, M
• Tóth, J
• Vesztergombi, G
• Wittgenstein, F
• Wu, S.X
• Wynhoff, S
• Xu, Z.Z
• Ye, J.B
• Ziegler, F

Titel

Measurement of η′(958) formation in two-photon collisions at LEP1

Ist Teil von

• Physics letters. B, 1998-02, Vol.418 (3), p.399-410

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

1998

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• The formation of the η′ in the reaction e +e −→e +e − η′→e +e − π + π − γ has been measured by the L3 detector at a centre-of-mass energy of 91 GeV . The radiative width of the η′ has been found to be Γ γγ=4.17±0.10 (stat.)±0.27 (sys.) keV . The Q 2 dependence of the η′ formation cross section has been measured for Q 2≤10 GeV 2 and the η′ electromagnetic transition form factor has been determined. The form factor can be parametrised by a pole form with Λ=0.900±0.046 (stat.)±0.022 (sys.) GeV . It is also consistent with recent non-perturbative QCD calculations.