Experimental evidence for a vector-like behaviour of Pomeron exchange

Evidence is presented that the Pomeron act as a non-conserved vector current. A study has been made of the azimuthal angle phi, which is defined as the angle between the pT vectors of the two outgoing protons, in the reaction pp -> pp(X0) for those resonances (X0) which are compatible with being...

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Detalles Bibliográficos
Autores principales: Barberis, D, Binon, F.G, Close, F.E, Danielsen, K.M, Donskov, S.V, Earl, B.C, Evans, D, French, B.R, Hino, T, Inaba, S, Jacholkowski, A, Jacobsen, T, Khaustov, G.V, Kinson, J.B, Kirk, A, Kondashov, A.A, Lednev, A.A, Lenti, V, Minashvili, I, Peigneux, J.P, Romanovsky, V, Russakovich, N, Semenov, A, Shagin, P.M, Shimizu, H, Singovsky, A.V, Sobol, A, Stassinaki, M, Stroot, J.P, Takamatsu, K, Tsuru, T, Villalobos Baillie, O, Votruba, M.F, Yasu, Y
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)01186-7
http://cds.cern.ch/record/399139
Descripción
Sumario:Evidence is presented that the Pomeron act as a non-conserved vector current. A study has been made of the azimuthal angle phi, which is defined as the angle between the pT vectors of the two outgoing protons, in the reaction pp -> pp(X0) for those resonances (X0) which are compatible with being produced by double Pomeron exchange. These distributions have been compared with a model which describes the Pomeron as a non-conserved vector current and a qualitative agreement is found. In addition, when one of the particles exchanged is known to have spin 0, namely pi-Pomeron exchange, the phi distribution is flat.

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