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We discuss central exclusive diffractive dihadron production in proton-proton collisions at high energies. The calculation is based on a tensor pomeron model and the amplitudes for the processes are formulated in an effective…

High Energy Physics - Phenomenology · Physics 2017-11-02 Piotr Lebiedowicz , Otto Nachtmann , Antoni Szczurek

We consider the general theoretical framework to study exclusive double diffractive events (EDDE). It is a powerful tool to study the picture of the $pp$ interaction. Basic kinematical and dynamical properties of the process, and also…

High Energy Physics - Phenomenology · Physics 2015-06-12 R. A. Ryutin

We consider the central exclusive production of the $p\bar{p}$ in the continuum and via resonances in proton-proton collisions at high energies. We discuss the diffractive mechanism calculated within the tensor-pomeron approach including…

High Energy Physics - Phenomenology · Physics 2018-10-03 Piotr Lebiedowicz , Otto Nachtmann , Antoni Szczurek

We discuss diffractive production of open charm and bottom mesons at the LHC. The differential cross sections for single- and central-diffractive mechanisms for $c\bar c$ and $b\bar b$ pair production are calculated in the framework of the…

High Energy Physics - Phenomenology · Physics 2015-03-25 Marta Luszczak , Rafal Maciula , Antoni Szczurek

Measurements of soft and hard diffractive processes have been performed at the Tevatron p-pbar collider during the past decade. Diffractive events are studied by means of identification of one or more rapidity gaps and/or a leading…

High Energy Physics - Phenomenology · Physics 2017-08-23 Michele Gallinaro

The processes of exclusive diffractive scattering $p+p\to p+p$, $\bar p+p\to\bar p+p$, and $\gamma^*+p\to V+p$ at high energies are considered in the framework of a unified Regge-eikonal model with a very simple reggeon structure of the…

High Energy Physics - Phenomenology · Physics 2011-09-28 A. A. Godizov

We consider Exclusive Double Diffractive Events (EDDE) as a powerfull tool to study the picture of the $pp$ interaction. Calculations of the cross-sections for the process $p+p\to p+M+p$ are presented in the convenient form for further…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. A. Petrov , R. A. Ryutin

Diffractive meson production at HERA offers interesting possibilities to investigate diffractive processes and thus to learn something about the properties of the pomeron. The most succesful phenomenological description of the pomeron so…

High Energy Physics - Phenomenology · Physics 2009-10-28 J. Klenner , A. Schäfer , W. Greiner

We present first predictions of the cross sections and differential distributions for the central exclusive reaction $pp \to pp \pi^{+} \pi^{-} \pi^{+} \pi^{-}$ being studied at RHIC and LHC. The amplitudes for the processes are formulated…

High Energy Physics - Phenomenology · Physics 2016-08-17 Piotr Lebiedowicz , Otto Nachtmann , Antoni Szczurek

We revisit diffractive and exclusive W production at hadron colliders in different models for soft colour exchanges. The process pp to p[WX]p, and in particular a W charge asymmetry, has been suggested as a way to discriminate diffractive…

High Energy Physics - Phenomenology · Physics 2013-07-16 Gunnar Ingelman , Roman Pasechnik , Johan Rathsman , Dominik Werder

We consider central exclusive diffractive dipion production in the reactions $pp \to pp \pi^{+} \pi^{-}$ and $p\bar{p} \to p\bar{p} \pi^{+} \pi^{-}$ at high energies. We include the dipion continuum, the dominant scalar $f_{0}(500)$,…

High Energy Physics - Phenomenology · Physics 2016-03-23 Piotr Lebiedowicz , Otto Nachtmann , Antoni Szczurek

Instrumenting the LHC to measure the outgoing protons in the process pp -> p+X+p opens up new possibilities for physics studies in the Standard Model and beyond. In this talk I first present an overview of the underlying QCD calculation and…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jeffrey R. Forshaw

We discuss exclusive central diffractive production of $\pi^{+} \pi^{-}$ in proton-(anti)proton collisions at high energies. Based on a tensor pomeron model we present results of the purely diffractive dipion continuum, the scalar…

High Energy Physics - Phenomenology · Physics 2016-06-30 Piotr Lebiedowicz , Otto Nachtmann , Antoni Szczurek

We present results for exclusive $p p \to p p \pi^+ \pi^-$ or $p \bar p \to p \bar p \pi^+ \pi^-$ processes at high energies. We discuss the role of new additional absorption corrections in the non-resonant Lebiedowicz-Szczurek model…

High Energy Physics - Phenomenology · Physics 2015-09-28 Piotr Lebiedowicz , Antoni Szczurek

Experimental results on hadronic soft and hard diffractive processes are reviewed with emphasis on aspects of the data that point to the underlying QCD mechanism for diffraction. Diffractive differential cross sections are shown to be…

High Energy Physics - Phenomenology · Physics 2009-09-29 Konstantin Goulianos

We consider diffractive processes which can be measured at the LHC. Analysis of diffractive events will give unique information about the high energy asymptotics of hadron scattering. In semihard diffraction one may study the partonic…

High Energy Physics - Phenomenology · Physics 2017-08-23 M. G. Ryskin , A. D. Martin , V. A. Khoze

We discuss new diffractive mechanism of central exclusive production of $W^+W^-$ pairs in proton-proton collisions at the LHC. We include diagrams with intermediate virtual Higgs boson as well as quark box diagrams. Several observables…

High Energy Physics - Phenomenology · Physics 2015-06-04 Piotr Lebiedowicz , Roman Pasechnik , Antoni Szczurek

Hadron production in single and central diffraction dissociation is studied in a model which includes soft hadron interaction as controlled by a supercritical pomeron parametrization and hard diffraction. Within this model, particle…

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

Different theoretical methods used for the description of diffractive processes in small-x deep inelastic scattering are reviewed. The semiclassical approach, where a partonic fluctuation of the incoming virtual photon scatters off a…

High Energy Physics - Phenomenology · Physics 2009-02-20 A. Hebecker

We discuss central exclusive diffractive production of light mesons in the reactions $pp \to pp\pi^{+}\pi^{-}$ and $pp \to ppK^{+}K^{-}$. The calculation is based on a tensor-pomeron approach. We include a purely diffractive dipion…

High Energy Physics - Phenomenology · Physics 2019-02-20 Piotr Lebiedowicz , Antoni Szczurek , Otto Nachtmann
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