Cluster cascading in the geometrical branching model

Chen, Wei R.; Hwa, Rudolph C.; Wang, Xin‐Nian

doi:10.1103/physrevd.43.2425

Cited by 3 publications

(6 citation statements)

References 20 publications

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“…In Fig The results are shown by the solid lines in Fig. 5, for which (4.9) has been used for h and y , since they were 3. Energy dependence of normalized moments C,.…”

Section: Results Of Eccomentioning

confidence: 99%

“…In order to implement the branching process with actual steps of branching, a simple Monte Carlo simulation was attempted with the aim of reproducing the global features such as P, in the full rapidity space [3]. Cluster cascading was considered in a scheme in which a specific mass spectrum was used.…”

Section: A Brief Review Of the Gbmmentioning

confidence: 99%

“…We have found that the intermittency data impose severe constraints on the branching process, thereby demonstrating the importance of studying intermittency. the branching process [3]. A t higher energies it is known that minijet production breaks the various scaling behaviors, and the GBM augmented by QCD hard subprocesses has successfully accounted for the changes in the above global properties [12].…”

Section: Introductionmentioning

confidence: 99%

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Geometrical branching model: A Monte Carlo simulation of multiparticle production

Hwa

Pan

1992

Phys. Rev. D

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The geometrical branching model for soft production in hadronic collisions is developed into a Monte Carlo code, called ECCO, in which the eikonal, formalism is combined with cluster cascades. The model not only can account for the global features of multiparticle production, but is also designed to describe the properties of rapidity fluctuations in small rapidity bins. With the use of five parameters ECCO can simultaneously simulate all the data on ( n ), P,, C,, dn /dy, C ( y , ,y, ), d~/ d~+ , and F,, for di ranging from 10 to 65 GeV, nearly all within error bars.PACS number(s): 13.85.Hd, 12.40.P~

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“…In Fig The results are shown by the solid lines in Fig. 5, for which (4.9) has been used for h and y , since they were 3. Energy dependence of normalized moments C,.…”

Section: Results Of Eccomentioning

confidence: 99%

Section: A Brief Review Of the Gbmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geometrical branching model: A Monte Carlo simulation of multiparticle production

Hwa

Pan

1992

Phys. Rev. D

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“…However, the effect of the discrete charge distribution of adsorbed atoms in some systems (especially the CslIr system) on the work function is remarkable because of the stronger attracting power of Ir atoms for electrons in adsorbed Cs atoms. Thus the calculated results for the work function-coverage curve for the CslIr(OO1) system with the jelliundslab model [61 are not very satisfactory whether by the multiple-energy-parameter augmented-function method [6-8] or by the multiple-energy-parameter function with derivative method [9] for description of wave functions in the jellium-vacuum region in the LMW method (linear augmented plane wave). In Lang's jelliudjellium model [ 1,2], the discretenesses of both substrate and overlayer are neglected simultaneously, so the result is in this case consistent with the realistic case because the positive discrete charges in both regions have an opposite and nearly cancelling effect on the electrons.…”

Section: Introductionmentioning

confidence: 99%

“…In order to consider the effect of discreteness, but not to expand the calculation cell, the jellium spherehlab model [13,14] is used in this paper to simulate the discreteness of positive charge in the overlayer. By the multiple-energy-parameter function with the derivative method proposed in [9], the work function of the Csfir system is calculated and an improved work functioncoverage curve is obtained. The charge transition between the jellium-vacuum region and slab as well as the potential in the jellium-vacuum region are analysed.…”

Section: Introductionmentioning

confidence: 99%

Ab initio investigation of the Cs/Ir(001) system

Chen

Wang

Luo

1993

J. Phys. D: Appl. Phys.

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The work function of an Ir(001) surface coated with a Cs overlayer is investigated by using the jellium sphere/slab model containing three layers of Ir slab, and a work function versus coverage curve much closer to the experimental one is obtained. The theoretical value of the work function at theta =0.0 (clean surface) is reduced to 5.84 eV from the former result 6.6 eV, which is now in good agreement with the experiment (5.5 eV). The minimum of the work function is found to be 1.02 eV (former value about 0.2 eV), which is also much closer to the experimental result (about 1.3 eV). The relationship between the work function and the transition of the valence electrons in the jellium sphere-vacuum region is analysed.

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Particle production at high energy. II. Accumulative impact and clustering in relativistic heavy-ion collisions

Shih

Zhang

1997

Phys. Rev. C

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Transverse energy dependence dE T /d of OϩAg, SϩAg, and SϩW collisions at 200 GeV/c are analyzed in a parameter-free phenomenological model of cascade and clustering based on pϩp and pϩAg collisions. The model uses an event generator which explicitly displays the impact parameter dependence of the colliding hadrons and incorporates basic features of multiparticle production in pϩp collisions. pϩAg data at 200 GeV/ c are first analyzed with special attention to the time ordering of the cascading many-body processes using the space-time geometry and the impact parameter dependence of the colliding hadrons. We introduce a relaxation time parameter , the size of a time interval of the overlapping regions of space-time in the center-ofmomentum frame of the colliding hadrons. Within a interval of relaxation, impacts of all collisions are accumulative. Only after this time has passed are pions allowed to be emitted from excited nuclear matter according to a set of rules for cascade. A value of ϳ0.1 fm/c used for pϩAg data leads to a description of the gross features of the transverse energy dependence dE T /d of OϩAg and SϩAg data of WA80 and SϩW data in the forward region of HELIOS.

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Cluster cascading in the geometrical branching model

Cited by 3 publications

References 20 publications

Geometrical branching model: A Monte Carlo simulation of multiparticle production

Geometrical branching model: A Monte Carlo simulation of multiparticle production

Ab initio investigation of the Cs/Ir(001) system

Particle production at high energy. II. Accumulative impact and clustering in relativistic heavy-ion collisions

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