Gluon dominance model and cluster production

Кокоулина, Е. С.; Kutov, A. Ya.; Никитин, В. А.

doi:10.1590/s0103-97332007000500028

Cited by 18 publications

(19 citation statements)

References 12 publications

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“…Reviews of the experimental results and theoretical models have been presented [11,12]. There are models based on the assumption of a cold quark gluon plasma [13], a boostinvariant classical flux tube [14], gluon dominance [15], the Unruh-Davies effect [16], synchrotron radiation in the stochastic nonperturbative QCD vacuum [17], the classical string fragmentation [18], a closed quark-antiquark loop [19], * wongc@ornl.gov and the ADS/CFT Supersymmetric Yang-Mills theory [20]. These different proposed models are useful to indicate that, to search for the source of the anomalous soft photons, it is necessary to go beyond the electromagnetic bremsstrahlung process.…”

Section: Introductionmentioning

confidence: 99%

Anomalous soft photons in hadron production

Wong

2010

Phys. Rev. C

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Anomalous soft photons in excess of what is expected from electromagnetic bremsstrahlung have been observed in association with the production of hadrons, mostly mesons, in high-energy K + p, π + p, π − p, pp, and e + e − collisions. We propose a model for the simultaneous production of anomalous soft photons and mesons in quantum field theory, in which the meson production arises from the oscillation of color charge densities of the quarks of the underlying vacuum in the flux tube. Because a quark carries both a color charge and an electric charge, the oscillation of the color charge densities will be accompanied by the oscillation of electric charge densities, which will in turn lead to the simultaneous production of soft photons during the meson production process. How the production of these soft photons may explain the anomalous soft photon data is discussed. Further experimental measurements to test the model are proposed.

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Section: Introductionmentioning

confidence: 99%

Anomalous soft photons in hadron production

Wong

2010

Phys. Rev. C

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“…The phenomenological models gave them the different predictions too. One of them is MGD [7], called a gluon model, second one − quark model [21].…”

Section: Gdm and Hadron Interactionsmentioning

confidence: 99%

“…Only completely an excluding of the valence quark (they are staying in the leading particles), we achieve the considerable improvement of χ 2 , at that, the hadronization parameters become rather more than 1 as in the e + e − annihilation. It indicates the change of mechanism of hadronization: from fragmentation to recombination one [7].…”

Section: Gdm and Hadron Interactionsmentioning

confidence: 99%

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Gluon dominance model

Кокоулина

Kutov²

2017

EPJ Web Conf.

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Abstract. Study of multi-particle production has longer than the semi-centennial history. As it is known, with the growth of energy of accelerators, the new channels of reaction are being opened, the average number of secondary particles is increasing. Physicists are able to accelerate stable particles, such as electrons, positrons, protons, antiprotons, ions (both light and heavy). Rarely, they accelerate kaons and pions. The obtained experimental material stimulates the development of the different theoretical approaches. Since appearance of the modern theory of strong interactions, quantum chromodynamics (QCD), our understanding of multi-particle production is advanced significantly. The language of quarks and gluons is basic one at the explanation of observable phenomena. This review is devoted to the history of appearance and the following development of the gluon dominance model. This model is based on the pQCD and the phenomenological description of the hadronization stage. It permits to describe multiplicity distributions both for lepton and hadron interactions, especially in the high multiplicity region.

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“…For description of the topological cross sections at the HM region and their behavior at the tail of the HM prediction, the gluon dominance model has been developed out [10][11][12]. In concordance with this model gluons are the basic sources of secondary As it was noted in the beginning, the HM study hides a lot of unexpected discoveries.…”

Section: Introductionmentioning

confidence: 98%

Search for Collective Phenomena in High Multiplicity Events at Nuclotron and U-70

Avdeichikov¹,

Bogdanova²,

Borzunov³

et al. 2018

KEn

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More than ten-year experimental search for collective phenomena in high multiplicity events has been carried out at the Laboratory of high energy physics at JINR. We present main results, which have been received at the U-70 accelerator (IHEP, Protvino) in the proton collisions and at Nuclotron ( JINR, Dubna) in the nuclear interactions. For interactions, topological cross sections have been gone three orders down and achieved KNO-scaling variable ( / ) 4.5. Probably, the tail of high multiplicity distribution stipulates gluon splitting. In the region of high multiplicity, the formation of pions is predominant. Some collective phenomena are predicted in this region. Using charged multiplicity data, we could restore total (sum of charged and neutral particles) multiplicity and have implemented unique research for fluctuations of the neutral particle number at the given total multiplicity. The revealed growth of scaled variance may indicate the pion (Bose-Einstein) condensate formation. The excess of soft photon yield at interactions of the Nuclotron beams (d, Li and C) with a carbon target has been confirmed. This can be connected with the pion condensate formation. Currently, we prepare two-shoulder electromagnetic calorimeter to carry out experimental studies at BM@N setup and plan to take part in new experiments on heavy ion collisions at Nuclotron.

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Gluon dominance model and cluster production

Cited by 18 publications

References 12 publications

Anomalous soft photons in hadron production

Anomalous soft photons in hadron production

Gluon dominance model

Search for Collective Phenomena in High Multiplicity Events at Nuclotron and U-70

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