A study of the centrally produced and φω systems in pp interactions at 450 GeV/c
by: D. Barberis, W. Beusch, F. G. Binon, A. M. Blick, F. E. Close, K. M. Danielsen, A. V. Dolgopolov, S. V. Donskov, B. C. Earl, D. Evans, B. R. French, T. Hino, S. Inaba, A. V. Inyakin, T. Ishida, A. Jacholkowski, T. Jacobsen, Jones, G. V. Khaustov, T. Kinashi, J. B. Kinson, A. Kirk, W. Klempt, V. Kolosov, A. A. Kondashov, A. A. Lednev, V. Lenti, S. Maljukov, P. Martinengo, I. Minashvili, T. Nakagawa, K. L. Norman, J. P. Peigneux, S. A. Polovnikov, V. A. Polyakov, V. Romanovsky, H. Rotscheidt, V. Rumyantsev, N. Russakovich, V. D. Samoylenko, A. Semenov, M. Sené, R. Sené, P. M. Shagin, H. Shimizu, A. V. Singovsky, A. Sobol, A. Solovjev, M. Stassinaki, J. P. Stroot, V. P. Sugonyaev, K. Takamatsu, G. Tchlatchidze, T. Tsuru, M. Venables, O. Villalobos Baillie, M. F. Votruba, Y. Yasu
Physics Letters B, Vol. 436, No. 1-2. (September 1998), pp. 204-210, doi:10.1016/s0370-2693(98)00962-9 Key: citeulike:11958985
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Abstract
A study of the reactions pp→pfps(K+K−Ï+Ï−) and pp→pfps(K+K−Ï+Ï−Ï0) shows evidence for the and ÏÏ channels respectively. The mass spectrum shows a broad distribution with a maximum near threshold and an angular analysis shows that it is compatible with having JP=2+. The behaviour of the cross-section as a function of centre of mass energy, and the four momentum transfer dependence, are compatible with what would be expected if the system was produced via double Pomeron exchange. The dPT behaviour of the ÏÏ channel is similar to what has been observed for all the undisputed states. In contrast, the dPT behaviour of the final state is similar to what has been observed for the ÏÏ final state and for previously observed glueball candidates.
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