Quark Structure of Hadrons and High Energy Collisions

Nyíri, J.

doi:10.1142/s0217751x03013612

Cited by 7 publications

(9 citation statements)

References 42 publications

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“…The remaining energy is associated with the leading particle(s), which emerge at small angles with respect to the beam direction-the "leading particle effect" [34]. In a constituent quark picture [35], only a fraction of the available quarks in p(p)+p and e ± +p collisions contribute to E eff . [36] and hence comparable N ch values in e − +e + , p(p)+p and e ± +p collisions.…”

Section: Discussionmentioning

confidence: 99%

Scaling Properties of the Mean Multiplicity and Pseudorapidity Density in e−+e+, e±+p, p( p ¯ )+p, p+A and A+A(B) Collisions

et al. 2018

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The charged-particle pseudorapidity density (dN ch /dη) for p(p)+p, p+A and A+A(B) collisions and the mean multiplicity N ch for e − +e + , e ± +p, and p(p)+p collisions are studied for a wide range of beam energies ( √ s). Characteristic scaling patterns are observed for both dN ch /dη and N ch , consistent with a thermal particle production mechanism for the bulk of the soft particles created in all of these systems. The scaling patterns found also validate an essential role for quark participants in these collisions. The measured values for dN ch /dη and N ch are observed to factorize into contributions that depend on log( √ s) and the number of nucleon or quark participant pairs N pp . The quantification of these contributions gives expressions that serve to systematize dN ch /dη and N ch measurements spanning nearly 4 orders of magnitude in √ s and to predict their values as a function of √ s and N pp .

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Section: Discussionmentioning

confidence: 99%

Scaling Properties of the Mean Multiplicity and Pseudorapidity Density in e−+e+, e±+p, p( p ¯ )+p, p+A and A+A(B) Collisions

et al. 2018

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“…The total available squared center-of-mass energy s hA in h-A collisions is related to s a as s hA = ν hA q s a [57,58] with ν hA q as the mean number of inelastic collisions of quarks with target nucleus of atomic mass A. Within the framework of the Additive Quark Model [59,60,61,62,63], the mean number of collisions in hadron-nucleus interactions is defined as the ability of constituent quarks in the projectile hadron to interact repeatedly inside a nucleus. The average number of constituent quarks (N hA q ) interacting inelastically in h-A collisions is given by [64],…”

Section: Total Mean Multiplicity Of Charged Hadronsmentioning

confidence: 99%

“…By using Eq. (4), one can easily see that the average number of constituent quark (N q ) is 1 for h-p collisions as the interactions occur between single constituent or dressed quark in accordance with the additive quark picture [62,63] and other quarks are considered to be spectators. Thus the energy of the initial thermalized state which is responsible for the production of secondary particles is assumed to arise mainly from interacting single quark pair.…”

Section: Total Mean Multiplicity Of Charged Hadronsmentioning

confidence: 99%

Wounded quarks and multiplicity at relativistic ion colliders

et al. 2013

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Abstract. In this paper, we propose a parameterization which is based on a phenomenological model involving the wounded quarks interactions for explaining the average charged particle multiplicity n ch , the central pseudo-rapidity density (dn/dη)η=0 and complete rapidity dependence of dn/dη in relativistic heavy-ion collider experiments. The model also interrelates nucleus-nucleus (A-A) collisions with p-A and p-p interactions. Our parameterization rests on simple assumptions regarding mean number of participating quarks and their average number of collisions. The results for n ch and their variations with the mass number of colliding nuclei, center-of-mass energy ( √ sNN ) and collision centrality are well supported by the available experimental data. Finally we give the predictions from our model for A-A collisions at the Large Hadron Collider (LHC) and Compressed Baryonic Matter (CBM) experiments. Our results indicate the existence of a possible universal production mechanism for p-p, p-A and A-A collisions.PACS. 25.75. .Mh

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Section: Total Mean Multiplicity Of Charged Hadronsmentioning

confidence: 99%

“…By using Eq. ( 4), one can easily see that the average number of constituent quark (N q ) is 1 for h-p collisions as the interactions occur between single constituent or dressed quark in accordance with the additive quark picture [62,63] and other quarks are considered to be spectators. Thus the energy of the initial thermalized state which is responsible for the production of secondary particles is assumed to arise mainly from interacting single quark pair.…”

Section: Total Mean Multiplicity Of Charged Hadronsmentioning

confidence: 99%

Wounded Quarks and Multiplicity at Relativistic Ion Colliders

Kumar,

Singh,

Srivastava

et al. 2012

Preprint

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In this paper, we propose a parameterization which is based on a phenomenological model involving the wounded quarks interactions for explaining the average charged particle multiplicity n ch , the central pseudo-rapidity density (dn/dη)η=0 and complete rapidity dependence of dn/dη in relativistic heavy-ion collider experiments. The model also interrelates nucleus-nucleus (A-A) collisions with p-A and p-p interactions. Our parameterization rests on simple assumptions regarding mean number of participating quarks and their average number of collisions. The results for n ch and their variations with the mass number of colliding nuclei, center-of-mass energy ( √ sNN ) and collision centrality are well supported by the available experimental data. Finally we give the predictions from our model for A-A collisions at the Large Hadron Collider (LHC) and Compressed Baryonic Matter (CBM) experiments. Our results indicate the existence of a possible universal production mechanism for p-p, p-A and A-A collisions.

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Quark Structure of Hadrons and High Energy Collisions

Abstract: The additive quark model is one of the simplest and oldest models for the description of soft processes at high energies, and it still works. We present here a review of this model and verify the rules of quark combinatorics following from it in hadronic Z0 decays.

Cited by 7 publications

References 42 publications

Scaling Properties of the Mean Multiplicity and Pseudorapidity Density in e−+e+, e±+p, p( p ¯ )+p, p+A and A+A(B) Collisions

Scaling Properties of the Mean Multiplicity and Pseudorapidity Density in e−+e+, e±+p, p( p ¯ )+p, p+A and A+A(B) Collisions

Wounded quarks and multiplicity at relativistic ion colliders

Wounded Quarks and Multiplicity at Relativistic Ion Colliders

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