Inelastic diffractive scattering at the CERN ISR

Albrow, M.; Bagchus, A.; Barber, D. P.; Benz, P.; Bogaerts, A.; Bǒsnjaković, B.; Brooks, J.R.; Chang, C. Y.; Clegg, A.B.; Erné, F.C.; Gee, C. N. P.; Kooijman, P.; Locke, D.H.; Loebinger, F. K.; McCubbin, N. A.; Murphy, Paul L.; Radojičić, D.; Rudge, A.; Sens, J.C.; Sessoms, A.L.; Singh, J. B.; Stork, D. H.; Timmer, J.

doi:10.1016/0550-3213(76)90121-8

Cited by 148 publications

(43 citation statements)

References 214 publications

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“…This observation is different from pomeron exchange processes, dominant at lower M X /W , where a dσ/dM 2 X ∼ 1/M 2 X dependence is a good approximation to the data [4]. The present measurement is reminiscent of data from proton-proton scattering pp → Xp ′ at lower centre-of-mass energies squared s < 3900 GeV 2 [1,20], where a flattening of the cross section dσ/dM 2 X is observed for masses above M X / √ s ∼ 0.2. In section 3.2, the measured cross-section dσ/dz is interpreted in a Regge motivated model.…”

Section: The Differential Cross Section Dσ γP→xp ′ (W Z)/dzsupporting

confidence: 53%

Photoproduction With a Leading Proton at Hera

HILLER¹

2002

Deep Inelastic Scattering

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The total cross section for the photoproduction process with a leading proton in the final state has been measured at γp centre-of-mass energies W of 91, 181 and 231 GeV. The measured cross sections apply to the kinematic range with the transverse momentum of the scattered proton restricted to p T ≤ 0.2 GeV and 0.68 ≤ z ≤ 0.88, where z = E ′ p /E p is the scattered proton energy normalised to the beam energy. The cross section dσ γp→Xp ′ (W, z)/dz is observed to be independent of W and z within the measurement errors and amounts to (8.05±0.06 (stat)±0.89 (syst)) µb on average. The data are well described by a Triple Regge model in which the process is mediated by a mixture of exchanges with an effective Regge trajectory of intercept α i (0) = 0.33 ± 0.04 (stat) ± 0.04 (syst). The total cross section for the interaction of the photon with this mixture (γα i → X) can be described by an effective trajectory of intercept α k (0) = 0.99 ± 0.01 (stat) ± 0.05 (syst). Predictions based on previous triple Regge analyses of pp → pX data assuming vertex factorisation are broadly consistent with the γp data. The measured cross sections are compared with deep inelastic scattering leading proton data in the same region of z and p T for photon virtuality Q 2 > 2.5 GeV 2 . The ratio of the cross section for leading proton production to the total cross section is found to rise with Q 2 .To be submitted to Nucl. Phys. B

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Section: The Differential Cross Section Dσ γP→xp ′ (W Z)/dzsupporting

confidence: 53%

Photoproduction With a Leading Proton at Hera

HILLER¹

2002

Deep Inelastic Scattering

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“…Encouraged by this result, we turn to the corresponding ISR measurements [43,44] of dσ sd /dt (see Fig. 7).…”

Section: The Pomeron Trajectorymentioning

confidence: 98%

Inelastic diffraction data and the effective omeron trajectory

Erhan¹,

Schlein²

2000

Physics Letters B

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A further analysis of inelastic diffraction data at the ISR and SPS-Collider confirms the relatively flat s-independent Pomeron trajectory in the high-|t| domain, 1 < |t| < 2 GeV 2 , reported earlier by the UA8 Collaboration. At |t| = 1.5 GeV 2 , α = 0.92 ± 0.03 is in agreement with the trajectories found in diffractive photoproduction of vector mesons at HERA. This suggests a universal fixed Pomeron trajectory at high-|t|. We also show that a triple-Regge Pomeron-exchange parametrization fit to the data requires an s-dependent (effective) Pomeron trajectory intercept, α(0), which decreases with increasing s, as expected from unitarization (multi-Pomeron-exchange) calculations. α(0) = 1.10 at the lowest ISR energy, 1.03 at the SPS-Collider and perhaps smaller at the Tevatron.

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“…This is successfully verified, as Figs. 1 and 2 show, in experiment [5,3], being a crucial evidence in favor of our formalism.…”

Section: Pos(diff2006)048mentioning

confidence: 81%

“…The measurements of the inclusive inelastic cross-section at the ISR and SPS colliders [5,3] are perhaps not sufficiently appreciated. The angular distribution of inelastic diffraction is, in a wide range of energy, consistently characterised by two different slopes at small and large momentum transfers.…”

Section: Pos(diff2006)048mentioning

confidence: 99%

The Structure of Forward Peak in Elastic and Inclusive Inelastic Diffraction

Małecki¹

2007

Proceedings of Diffraction 06, International Workshop on Diffraction in High-Energy Physics — PoS(DIFF2006)

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Elastic scattering and inclusive inelastic diffraction of high energy hadrons at small momentum transfers are considered. A general expression for the elastic scattering amplitude in terms of even moments of the probability distribution is presented. We also show that the shape of the forward inclusive inelastic diffraction is determined by elastic scattering in the transition region between the forward peak and diffraction minimum.

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Inelastic diffractive scattering at the CERN ISR

Cited by 148 publications

References 214 publications

Photoproduction With a Leading Proton at Hera

Photoproduction With a Leading Proton at Hera

Inelastic diffraction data and the effective omeron trajectory

The Structure of Forward Peak in Elastic and Inclusive Inelastic Diffraction

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