Proton-proton scattering and the pomeron

Collins, Peter; Gault, Fred; Martin, A. D.

doi:10.1016/0550-3213(74)90035-2

Cited by 57 publications

(17 citation statements)

References 57 publications

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“…Let us discuss a last example of eikonal niodels. Motivated by a study of quantum electrodynamics at very high energies, CHENG, WALKER and Wu [83] have chosen for the Pomeron singularity a' = 0, E > 0 and y = 0, -l. I n agreement with COLLIES et al [89], Cheng et al have also found that in order to obtain reasonable fits to the data one needs a complicated residue function for which they have used:…”

Section: *supporting

confidence: 72%

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Nucleon‐Nucleon Scattering as High Energies

Kroll

1976

Fortschr. Phys.

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Section: *supporting

confidence: 72%

“…A way ont of this dilemma is the use of a Pomeron which increases itself. So, for example, COLLISS, GAULT and MARTIN [89] have used a Pomeron with an intercept larger than one (8 = 0.06, a' = y = 0). It has turned out however that they have to admit a more complicated residue than eq.…”

Section: *mentioning

confidence: 99%

Nucleon‐Nucleon Scattering as High Energies

Kroll

1976

Fortschr. Phys.

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“…There have been many attempts over the years to fit total cross sections with a combination of Reggeon and Pomeron contributions. See for example [7,8], both of which conclude that the Pomeron has an intercept P ð0Þ $ 1:06-1:08 and a slope 0 P $ 0:25 GeV À2 . However, the existence of the Pomeron trajectory and its structure has remained elusive for a number of reasons.…”

Section: Regge Theory String Theory and The Pomeronmentioning

confidence: 96%

Pomeron contribution toppandpp¯scattering in AdS/QCD

2009

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We consider the differential and total cross sections for proton-proton and proton-antiproton scattering in the Regge regime from the point of view of string dual models of QCD. We argue that the form factor which appears in the differential cross section is related to the matrix element of the stress tensor between proton states and give a procedure for computing the strength of the coupling of the Pomeron trajectory to the proton. We compute this coupling in the Sakai-Sugimoto model and find excellent agreement with the data at large s and small t. The form factor can be estimated in the Skyrme model or in AdS/QCD models and gives a stiffer form factor than the commonly used electromagnetic form factor, in agreement with our fits to data. Our model is also in good agreement with the measured ratio of real to imaginary parts of the forward scattering amplitude at large s.

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“…We will adapt the common interpretation of this, that these processes are mediated by a single trajectory of glueballs known as the Pomeron [14][15][16]. However, direct experimental confirmation of the glueballs involved does not exist, though they are observed in lattice QCD calculations [17].…”

Section: Jhep08(2018)093mentioning

confidence: 99%

“…This suggests the trajectory is made up of particles with vacuum quantum numbers, and in particular that only even-spin particles appear on it. We have taken the common point of view that this is associated with a single glueball trajectory: the Pomeron [14].…”

Section: Reviewing Pomeron Exchange In Proton-proton Scatteringmentioning

confidence: 99%

A second look at string-inspired models for proton-proton scattering via Pomeron exchange

Maddock

Mann

2018

J. High Energ. Phys.

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Abstract:We re-examine a string dual model for elastic proton-proton scattering via Pomeron exchange. We argue that the method of "Reggeizing" a propagator to take into account an entire trajectory of exchanged particles can be generalized, in particular by modifying the value of a mass-shell parameter in the model. We then fit the generalized model to scattering data at large s and small t. The fitting results are inconclusive, but suggest that a better fit might be obtained by allowing the mass-shell parameter to vary. The model fits the data equally well (roughly) for a wide range of values of the mass-shell parameter, but the other fitting parameters (the slope and intercept of the Regge trajectory, and the coupling constant and dipole mass from the proton-proton-glueball coupling) are then inconsistent with what we expect. On the other hand, using the traditional method of Reggeization generates a weaker fit, but the other parameters obtain more physically reasonable values. In analyzing the fitting results, we also found that our model is more consistent with the √ s = 1800 GeV data coming from the E710 experiment than that coming from the CDF experiment, and that our model has the greatest discrepancy with the data in the range 0.5 GeV 2 < |t| < 0.6 GeV 2 , suggesting that the transition from soft Pomeron to hard Pomeron may occur closer to t = −0.5 GeV 2 rather than t = −0.6 GeV 2 as previously thought.

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Proton-proton scattering and the pomeron

Cited by 57 publications

References 57 publications

Nucleon‐Nucleon Scattering as High Energies

Nucleon‐Nucleon Scattering as High Energies

Pomeron contribution toppandpp¯scattering in AdS/QCD

A second look at string-inspired models for proton-proton scattering via Pomeron exchange

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