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Central exclusive diffractive production in proton-proton collisions at hadron colliders is characterised by hadronic activity at or close to midrapidity, and by the two forward scattered protons, or their remnants. In such events, no…

High Energy Physics - Experiment · Physics 2026-04-23 Rainer Schicker

We argue that diffractive DIS, dominated by soft interactions, is probably the unique process which allows us to observe unitarity effects in DIS. Guided by a close analogy between the diffractive dissociation of a highly virtual photon and…

High Energy Physics - Phenomenology · Physics 2009-10-30 B. Z. Kopeliovich , B. Povh , E. Predazzi

The diffractive dissociation of virtual photons, gamma*p -> Xp, has been studied with the ZEUS detector at HERA by requiring a large rapidity gap between X and the outgoing proton, by analysing the mass distribution, M_X, of the hadronic…

High Energy Physics - Experiment · Physics 2008-08-07 Marta Ruspa

The gauge boson production at forward rapidities in single diffractive events at the LHC is investigated considering $pp$ collisions at $\sqrt{s} =$ 8 and 13 TeV. The impact of gap survival effects is analysed using two different models for…

High Energy Physics - Phenomenology · Physics 2017-02-01 E. Basso , V. P. Goncalves , M. S. Rangel

A search for diphoton events with large missing transverse energy is presented. The data were collected with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV at the CERN Large Hadron Collider and correspond to an integrated…

High Energy Physics - Experiment · Physics 2015-03-17 The ATLAS Collaboration

We briefly present the soft colour interaction models which are successful in reproducing a multitude of diffractive hard scattering data, and give predictions for diffractive Higgs production at the Tevatron and LHC. Only a few diffractive…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. Timneanu , R. Enberg , G. Ingelman

Soft diffractive cross sections in $pp$ (or $\bar pp$), $\pi p$ and $\gamma p$ collisions are calculated using QCD-motivated pomeron. The $s$-channel unitarization of the amplitude is performed by the eikonal approach, and in the framework…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. V. Anisovich , L. G. Dakhno , V. A. Nikonov

The forward physics program of the CMS experiment at the LHC spans a broad range of diverse physics topics including studies of low-x QCD and diffractive scattering, multi-parton interactions and underlying event structure, gamma-mediated…

High Energy Physics - Experiment · Physics 2019-08-13 Dmytro Volyanskyy

This talk will review selected topics in rapidity gap physics. In particular I will discuss diffractive jet production and the possibility of searching for the higgs boson using diffraction at the LHC; the dipole picture of diffraction and…

High Energy Physics - Phenomenology · Physics 2007-05-23 J R Forshaw

In this paper, we estimate the number of event topologies that have the potential to be produced in $pp$ collisions at the Large Hadron Collider (LHC) without violating kinematic and other constraints. We use numerical calculations and…

High Energy Physics - Phenomenology · Physics 2024-11-06 S. V. Chekanov

A short run of proton-oxygen and oxygen-oxygen collisions is planned to take place at the Large Hadron Collider during LHC Run 3. The primary goal of this run is to improve the modeling of Cosmic-Ray interactions and to reduce the…

High Energy Physics - Experiment · Physics 2023-08-08 Michael Pitt

We make predictions for the cross sections of diffractive dijet photoproduction in $pp$, $pA$ and $AA$ ultraperipheral collisions (UPCs) at the LHC during Runs 1 and 2 using next-to-leading perturbative QCD. We find that the resulting cross…

High Energy Physics - Phenomenology · Physics 2016-05-25 V. Guzey , M. Klasen

A model for the production of large rapidity gaps being implemented in the Monte Carlo event generator PHOJET is discussed. In this model, high-mass diffraction dissociation exhibits properties similar to hadron production in…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. W. Bopp , R. Engel , J. Ranft

Feasibility studies of the measurement of the exclusive diffractive bremsstrahlung cross-section in proton-proton scattering at the centre of mass energy of 13 TeV at the LHC are reported. Present studies were performed for the low…

High Energy Physics - Experiment · Physics 2017-04-26 J. J. Chwastowski , S. Czekierda , R. Staszewski , M. Trzebiński

We present charged-particle distributions sensitive to the underlying event, measured by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV, in low-luminosity Large Hadron Collider fills corresponding to an…

High Energy Physics - Experiment · Physics 2017-05-11 ATLAS Collaboration

In these lectures, we present and discuss the most recent results on inclusive diffraction from the HERA and Tevatron colliders and give the prospects for the future at the LHC. Of special interest is the exclusive production of Higgs boson…

High Energy Physics - Phenomenology · Physics 2008-11-26 C. Royon

The following effects in the nearly forward ("soft") region of the LHC are proposed to be investigated: 1) At small |t| the fine structure of the cone (Pomeron) shouldbe scrutinized: a) a break of the cone near $t\approx - 0.1 ~ GeV$^2, due…

High Energy Physics - Phenomenology · Physics 2014-11-18 R. Fiore , L. Jenkovszky , R. Orava , E. Predazzi , A. Prokudin , O. Selyugin

Charged particle multiplicities in proton-proton collisions measured in the LHCb detector at a centre-of-mass energy of $\sqrt s$=7 TeV in different windows of pseudorapidity $\eta$, in the forward region of the vertex detector are studied…

High Energy Physics - Experiment · Physics 2020-09-16 R. Aggarwal , M. Kaur

On the basis of the experimental data on diffractive processes in $\pi p$, $pp$ and $p \bar p$ collisions at intermediate, moderately high and high energies, we restore the scattering amplitude related to the $t$-channel exchange by vacuum…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. G. Dakhno , V. A. Nikonov

Production of rare particles within rapidity gaps has been proposed as a background-free signal for the detection of new physics at hadron colliders. No complete formalism accounts for such processes yet. We study a simple lowest-order QCD…

High Energy Physics - Phenomenology · Physics 2011-07-19 Jean-Rene Cudell , Oscar F. Hernandez