Soft colour interactions and diffractive Higgs production

Enberg, Rikard; Ingelman, G.; Tı̂mneanu, Nicuşor

doi:10.1140/epjcd/s2004-03-1837-x

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…It comes from the diffractive amplitude T D ≡ T D (s, t). It means that (22),(23), (28), (29) and (32) are taken at any fixed value of t. If we use the data on total cross-sections we have to use the following equality:…”

Section: Convolution and Integration Extraction Of Parameters For Thmentioning

confidence: 99%

Exclusive double diffractive events: general framework and prospects

Ryutin

2013

Eur. Phys. J. C

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Abstract. We consider the general theoretical framework to study exclusive double diffractive events (EDDE). It is a powerful tool to explore the picture of the pp interaction. Basic kinematical and dynamical properties of the process, and also normalization of parameters via standard processes like the exclusive vector meson production (EVMP), are considered in detail. As an example, calculations of the cross-sections in the model with three pomerons for the process p + p → p + M + p are presented for Tevatron and LHC energies. PACS ItroductionImpressive progress of the LHC experiments stimulates new investigations in different areas of high energy physics. Latest weighty arguments in favor of the existence of the Higgs boson give us the basis for futher experiments, since we have to define exactly the nature of this particle. It is a problem of today to have a clear instrument to determine its quantum numbers and couplings to other particles. Besides this task concerning Higgs boson, we have to continue to study other fundamental objects of high energy physics like jets and particles produced in different processes.If we consider huge number of high energy processes which have been studied for a long time, we will find the one which can serve as a clear source of information about high-energy dynamics. It is the exclusive double diffractive event (EDDE), i.e. the process of the type h + h → h * + M + h * , where h → h * scattering is quasidiffractive, M is the centrally produced particle or system of particles and "+" means large rapidity gap (LRG). If one takes M as a single particle produced, this is the first "genuinely" inelastic process which not only retains a lot of features of elastic scattering (diffractive patterns), but also shows clearly how the initial energy is being transformed into the secondary particles. General properties of such amplitudes were considered in Ref. Experimental study has begun since 1970's [31]. As Pomerons are the driving force of the processes in question at high energies it is naturally to expect that glueball production will be favorable, if one believes that Pomerons are mostly gluonic objects. Central glueball production was suggested as possible origin of the total cross section rise in Ref. [3]. One of the early proposal for experimental investigations of centrally produced glueballs in EDDE was made in [32]. As to the most recent experimental studies one has to mention the series of results from the expe-

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Section: Convolution and Integration Extraction Of Parameters For Thmentioning

confidence: 99%

Exclusive double diffractive events: general framework and prospects

Ryutin

2013

Eur. Phys. J. C

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“…The SCI model assumes that soft color exchanges give variations in the topology of the confining color-string fields which then hadronize into a final state which can include a leading neutron. It was interfaced to the Pythia program [57]; this implementation of Pythia did not include multiple parton interactions.…”

Section: Model Comparisonsmentioning

confidence: 99%

Measurement of dijet photoproduction for events with a leading neutron at HERA

Jeneret

Piotrzkowski

2010

Nuclear Physics B

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Differential cross sections for dijet photoproduction and this process in association with a leading neutron, e(+) + p -> e(+) + jet + jet + X (+n), have been measured with the ZEUS detector at HERA using an integrated luminosity of 40 pb(-1). The fraction of dijet events with a leading neutron was studied as a function of different jet and event variables. Single- and double-differential cross sections are presented as a function of the longitudinal fraction of the proton momentum carried by the leading neutron, x(L) and of its transverse momentum squared, p(T)(2). The dijet data are compared to inclusive DIS and photoproduction results; they are all consistent with a simple pion-exchange model. The neutron yield as a function of x(L) was found to depend only on the fraction of the proton beam energy going into the forward region, independent of the hard process. No firm conclusion can be drawn on the presence of rescattering effects. (C) 2009 Elsevier B.V. All rights reserved

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Visualizations of exclusive central diffraction

Ryutin

2014

Eur. Phys. J. C

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The case of low invariant mass exclusive central diffractive production is considered in the general theoretical framework. It is shown that diffractive patterns (differential cross-sections in variables like transfer momenta squared, the azimuthal angle between final hadrons and their combinations) can serve as a unique tool to explore the picture of the pp interaction and falsify theoretical models. Basic kinematical and dynamical properties of the process are considered in detail. As an example, visualizations of diffractive patterns in the model with three pomerons for processes p

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Soft colour interactions and diffractive Higgs production

Cited by 3 publications

References 10 publications

Exclusive double diffractive events: general framework and prospects

Exclusive double diffractive events: general framework and prospects

Measurement of dijet photoproduction for events with a leading neutron at HERA

Visualizations of exclusive central diffraction

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