Experimental evidence for a vector-like behaviour of Pomeron exchange

Abstract

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.

13 pages, Latex, 4 Figures

References in corpus (1)

• A partial wave analysis of the centrally produced pi+pi- system in pp interactions at 450 GeV/c

Cited by in corpus (23)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• The mixing of the f0(1370), f0(1500) and f0(1710) and the search for the scalar glueball
• Isospin breaking exposed in f0(980)- a0(980) mixing
• Exclusive central diffractive production of scalar and pseudoscalar mesons; tensorial vs. vectorial pomeron
• Novel approaches in Hadron Spectroscopy
• QCD Glueball Regge Trajectories and the Pomeron
• Diffractive gamma-gamma production at hadron colliders
• Resonance production in central pp collisions at the CERN Omega Spectrometer
• Towards a complete study of central exclusive production of $K^{+}{K}^{-}$ pairs in proton-proton collisions within the tensor Pomeron approach
• Dynamics of Glueball and qqbar production in the central region of pp collisions
• A study of the centrally produced eta pi0 and eta pi- systems in pp interactions at 450 GeV/c
• Toward the non-perturbative description of high energy processes
• Azimuthal Angular Distributions in EDDE as Spin-Parity Analyser and Glueball Filter for LHC
• Exclusive diffractive production of ${\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}$ via the intermediate $\sigma \sigma$ and $\rho \rho$ states in proton-proton collisions within tensor pomeron approach
• Measurement of the central exclusive production of charged particle pairs in proton-proton collisions at $\sqrt{s}=200$ GeV with the STAR detector at RHIC
• Central exclusive diffractive production of axial-vector $f_1(1285)$ and $f_1(1420)$ mesons in proton-proton collisions
• New analysis of $\eta \pi$ tensor resonances measured at the COMPASS experiment
• Extracting the pomeron-pomeron-$f_2(1270)$ coupling in the $pp\to pp{\pi }^{+}{\pi }^{-}$ reaction through angular distributions of the pions
• Exclusive Double Diffractive Events: general framework and prospects
• Visualizations of the Exclusive Central Diffraction
• The role of secondary Reggeons in central meson production
• Single and Double Peripheral Production of Sigmas in Proton Proton Collisions
• Diffraction at RHIC