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In this letter we estimate the contribution of the double diffractive processes for the diphoton production in $pp$ collisions at the Large Hadron Collider (LHC). The acceptance of the central and forward LHC detectors is taken into account…

High Energy Physics - Phenomenology · Physics 2020-10-28 V. P. Goncalves , D. E. Martins , M. S. Rangel

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

The exchange of electroweak gauginos in the $t-$ or $u-$channel allows squark pair production at hadron colliders without color exchange between the squarks. This can give rise to events where little or no energy is deposited in the…

High Energy Physics - Phenomenology · Physics 2009-11-10 Sascha Bornhauser , Manuel Drees , Herbert K. Dreiner , Jong Soo Kim

The relative rates of single- and double- diffractive processes were measured with the ALICE detector by studying properties of gaps in the pseudorapidity distribution of particles produced in proton-proton collisions at $\sqrt{s}$ = 0.9…

High Energy Physics - Experiment · Physics 2019-08-13 M. G. Poghosyan

The process of soft diffractive dissociation in hadronic collisions is discussed in the framework of the Miettinen-Pumplin model. A good description of the data in the ISR-Tevatron energy range is found. Predictions for the total, elastic…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Sapeta

We propose a model to describe diffractive events in hadron-hadron collisions where a rapidity gap is surrounded by two jets. The hard color-singlet object exchanged in the t-channel and responsible for the rapidity gap is described by the…

High Energy Physics - Phenomenology · Physics 2011-03-21 O. Kepka , C. Marquet , C. Royon

Measurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV are presented. The luminosity is independently determined using several detectors and multiple…

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

The requirement of a large pseudo-rapidity gap to select diffractive DIS events at HERA restricts the kinematically accessible region of phase space for a significant range of $Q^2$, $\beta$ and $\xpom$. Consequences of this include a…

High Energy Physics - Phenomenology · Physics 2009-10-31 J Williams

Double diffractive Higgs production at $pp$ (or $\bar{p}p$) colliders continues to attract attention as a potential signal in the search for the boson. We present improved perturbative QCD estimates of the event rates for both the exclusive…

High Energy Physics - Phenomenology · Physics 2011-09-13 V. A. Khoze , A. D. Martin , M. G. Ryskin

We summarize our understanding of the dynamical mechanisms governing rapidity gap survival in central exclusive diffraction, pp -> p + H + p (H = high-mass system), and discuss the uncertainties in present estimates of the survival…

High Energy Physics - Phenomenology · Physics 2008-12-08 M. Strikman , C. Weiss

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 present measurements of soft single- and double-diffractive cross sections, as well as of forward rapidity gap cross sections at 7 TeV at the LHC, and compare the results to other measurements and to theoretical predictions implemented…

High Energy Physics - Experiment · Physics 2013-10-10 Konstantin Goulianos

The ALICE experiment is equipped with a wide range of detectors providing excellent tracking and particle identification in the central region, as well as forward detectors with extended pseudorapidity coverage, which are well suited for…

High Energy Physics - Experiment · Physics 2014-12-24 Sergey Evdokimov

We present a model of high energy soft $pp$ interactions that has multi s- and t-channel components, which has been tuned to describe all the available data. The t-channel components allow matching of the soft to the hard (QCD) Pomeron.…

High Energy Physics - Phenomenology · Physics 2009-11-13 A. D. Martin , V. A. Khoze , M. G. Ryskin

In this paper, we discuss the observation of exclusive events using the dijet mass fraction as measured by the CDF collaboration at the Tevatron. We compare the data to pomeron exchange inspired models as well as Soft color interaction…

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

We consider hard diffractive events in proton-proton collisions at the LHC, in which both protons escape the collision intact. In such double Pomeron exchange processes, we propose to measure dijets and photon-jet final states, and we show…

High Energy Physics - Phenomenology · Physics 2015-06-16 C. Marquet , C. Royon , M. Saimpert , D. Werder

The exchange of electroweak gauginos in the $t-$ or $u-$channel allows squark pair production at hadron colliders without color exchange between the squarks. This can give rise to events where little or no energy is deposited in the…

High Energy Physics - Phenomenology · Physics 2015-05-14 Sascha Bornhauser , Manuel Drees , Herbert K. Dreiner , Jong Soo Kim

We show that the diffractive pp (and p\bar{p}) data (on \sigma_tot, d\sigma_el/dt, proton dissociation into low-mass systems, \sigma^D(low M), and high-mass dissociation, d\sigma/d(\Delta\eta)) in a wide energy range from CERN-ISR to LHC…

High Energy Physics - Phenomenology · Physics 2015-06-16 V. A. Khoze , A. D. Martin , M. G. Ryskin

We discuss a phenomenological model that describes results on diffractive pp and pbar-p cross sections and event final states up to the Fermilab Tevatron collider energy of 1.96 TeV and use it to make predictions for Large Hadron Collider…

High Energy Physics - Phenomenology · Physics 2011-01-04 Konstantin Goulianos

Very forward (VF) detectors in hadron colliders, having unique sensitivity to diffractive processes, can be a powerful tool for studying diffractive dissociation by combining them with central detectors. Several Monte Carlo simulation…

High Energy Physics - Experiment · Physics 2017-04-12 Qi-Dong Zhou , Yoshitaka Itow , Hiroaki Menjo , Takashi Sako