Production of $\chi_{c2}$ Mesons in Photon-Photon Collisions at LEP
- Ackerstaff, K.
- Alexander, G.
- Allison, John
- Altekamp, N.
- Anderson, K.J.
- Anderson, S.
- Arcelli, S.
- Asai, S.
- Ashby, S.F.
- Axen, D.
- Azuelos, G.
- Ball, A.H.
- Barberio, E.
- Barlow, Roger J.
- Bartoldus, R.
- Batley, J.R.
- Baumann, S.
- Bechtluft, J.
- Behnke, T.
- Bell, Kenneth Watson
- Bella, G.
- Bellerive, A.
- Bentvelsen, S.
- Bethke, S.
- Betts, S.
- Biebel, O.
- Biguzzi, A.
- Bird, S.D.
- Blobel, V.
- Bloodworth, I.J.
- Bobinski, M.
- Bock, P.
- Bohme, J.
- Boutemeur, M.
- Braibant, S.
- Bright-Thomas, P.
- Brown, Robert M.
- Burckhart, H.J.
- Burgard, C.
- Burgin, R.
- Capiluppi, P.
- Carnegie, R.K.
- Carter, A.A.
- Carter, J.R.
- Chang, C.Y.
- Charlton, David G.
- Chrisman, D.
- Ciocca, C.
- Clarke, P.E.L.
- Clay, E.
- Cohen, I.
- Conboy, J.E.
- Cooke, O.C.
- Couyoumtzelis, C.
- Coxe, R.L.
- Cuffiani, M.
- Dado, S.
- Dallavalle, G.Marco
- Davis, R.
- De Jong, S.
- del Pozo, L.A.
- De Roeck, A.
- Desch, K.
- Dienes, B.
- Dixit, M.S.
- Dubbert, J.
- Duchovni, E.
- Duckeck, G.
- Duerdoth, I.P.
- Eatough, D.
- Estabrooks, P.G.
- Etzion, E.
- Evans, H.G.
- Fabbri, F.
- Fanfani, A.
- Fanti, M.
- Faust, A.A.
- Fiedler, F.
- Fierro, M.
- Fleck, I.
- Folman, R.
- Furtjes, A.
- Futyan, D.I.
- Gagnon, P.
- Gary, J.W.
- Gascon, J.
- Gascon-Shotkin, S.M.
- Gaycken, G.
- Geich-Gimbel, C.
- Giacomelli, G.
- Giacomelli, P.
- Gibson, V.
- Gibson, W.R.
- Gingrich, D.M.
- Glenzinski, D.
- Goldberg, J.
- Gorn, W.
- Grandi, C.
- Gross, E.
- Grunhaus, J.
- Gruwe, M.
- Hanson, G.G.
- Hansroul, M.
- Hapke, M.
- Harder, K.
- Hargrove, C.K.
- Hartmann, C.
- Hauschild, M.
- Hawkes, C.M.
- Hawkings, R.
- Hemingway, R.J.
- Herndon, M.
- Herten, G.
- Heuer, R.D.
- Hildreth, M.D.
- Hill, J.C.
- Hillier, S.J.
- Hobson, P.R.
- Hocker, James Andrew
- Homer, R.J.
- Honma, A.K.
- Horvath, D.
- Hossain, K.R.
- Howard, R.
- Huntemeyer, P.
- Igo-Kemenes, P.
- Imrie, D.C.
- Ishii, K.
- Jacob, F.R.
- Jawahery, A.
- Jeremie, H.
- Jimack, M.
- Jones, C.R.
- Jovanovic, P.
- Junk, T.R.
- Karlen, D.
- Kartvelishvili, V.
- Kawagoe, K.
- Kawamoto, T.
- Kayal, P.I.
- Keeler, R.K.
- Kellogg, R.G.
- Kennedy, B.W.
- Klier, A.
- Kluth, S.
- Kobayashi, T.
- Kobel, M.
- Koetke, D.S.
- Kokott, T.P.
- Kolrep, M.
- Komamiya, S.
- Kowalewski, Robert V.
- Kress, T.
- Krieger, P.
- von Krogh, J.
- Kuhl, T.
- Kyberd, P.
- Lafferty, G.D.
- Lanske, D.
- Lauber, J.
- Lautenschlager, S.R.
- Lawson, I.
- Layter, J.G.
- Lazic, D.
- Lee, A.M.
- Lellouch, D.
- Letts, J.
- Levinson, L.
- Liebisch, R.
- List, B.
- Littlewood, C.
- Lloyd, A.W.
- Lloyd, S.L.
- Loebinger, F.K.
- Long, G.D.
- Losty, M.J.
- Ludwig, J.
- Lui, D.
- Macchiolo, A.
- Macpherson, A.
- Mader, W.
- Mannelli, M.
- Marcellini, S.
- Markopoulos, C.
- Martin, A.J.
- Martin, J.P.
- Martinez, G.
- Mashimo, T.
- Mattig, Peter
- McDonald, W.John
- McKenna, J.
- Mckigney, E.A.
- McMahon, T.J.
- McPherson, R.A.
- Meijers, F.
- Menke, S.
- Merritt, F.S.
- Mes, H.
- Meyer, J.
- Michelini, A.
- Mihara, S.
- Mikenberg, G.
- Miller, D.J.
- Mir, R.
- Mohr, W.
- Montanari, A.
- Mori, T.
- Nagai, K.
- Nakamura, I.
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- Nellen, B.
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- Oakham, F.G.
- Odorici, F.
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- Oreglia, M.J.
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- Pater, J.R.
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- Patt, J.
- Perez-Ochoa, R.
- Petzold, S.
- Pfeifenschneider, P.
- Pilcher, J.E.
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- Schaile, O.
- Scharf, F.
- Scharff-Hansen, P.
- Schieck, J.
- Schmitt, B.
- Schmitt, S.
- Schoning, A.
- Schroder, Matthias
- Schumacher, M.
- Schwick, C.
- Scott, W.G.
- Seuster, R.
- Shears, T.G.
- Shen, B.C.
- Shepherd-Themistocleous, C.H.
- Sherwood, P.
- Siroli, G.P.
- Sittler, A.
- Skuja, A.
- Smith, A.M.
- Snow, G.A.
- Sobie, R.
- Soldner-Rembold, S.
- Sproston, M.
- Stahl, A.
- Stephens, K.
- Steuerer, J.
- Stoll, K.
- Strom, David M.
- Strohmer, R.
- Surrow, B.
- Talbot, S.D.
- Tanaka, S.
- Taras, P.
- Tarem, S.
- Teuscher, R.
- Thiergen, M.
- Thomson, M.A.
- von Torne, E.
- Torrence, E.
- Towers, S.
- Trigger, I.
- Trocsanyi, Z.
- Tsur, E.
- Turcot, A.S.
- Turner-Watson, M.F.
- Van Kooten, Rick J.
- Vannerem, P.
- Verzocchi, M.
- Voss, H.
- Wackerle, F.
- Wagner, A.
- Ward, C.P.
- Ward, D.R.
- Watkins, P.M.
- Watson, A.T.
- Watson, N.K.
- Wells, P.S.
- Wermes, N.
- White, J.S.
- Wilson, G.W.
- Wilson, J.A.
- Wyatt, T.R.
- Yamashita, S.
- Yekutieli, G.
- Zacek, V.
- Zer-Zion, D.
DOIAbstract
We present an observation at LEP of the production of chi_c2 mesons in the collisions of two quasi-real photons using the OPAL detector. The chi_c2 mesons are reconstructed in the decay channel Chi_c2 to J/psi gamma to l+l- gamma (with l= e,mu) using all data taken at e+e- centre-of-mass energies of 91 and 183 GeV, corresponding to integrated luminosities of 167 and 55 pb-1 respectively. The two-photon width of the Chi_2 is determined to be 1.76 +- 0.47 +- 0.37 +- 0.15 keV where the first error is statistical, the second is systematic and the third comes from branching ratio uncertainties
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