Charged-particle multiplicity and angular distributions in proton-emulsion interactions at 800 GeV

Abduzhamilov, A.; Barbier, L.; Chernova, L. P.; Chernyavsky, M. M.; Gadzhieva, S. I.; Gulamov, K. G.; Hołyński, R.; Jones, W. V.; Litvinenko, N.; Lukicheva, N. S.; Mirkhodzhaeva, D.; Navotny, V. S.; Orlova, G. I.; Petrov, NW; Ravvina, E. A.; Saidkhanov, N.; Salmanova, N. A.; Svechnikova, L. N.; Tretyakova, M. I.; Wefel, J. P.; Wolter, W.; Wosiek, B. K.; Wózniak, K. W.

doi:10.1103/physrevd.35.3537

Cited by 37 publications

(19 citation statements)

References 11 publications

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“…Study of the characteristics of grey particles produced in high energy hadron-nucleus (h-A) interactions has attracted a great deal of attention in the last decade (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12), because of the fact that the number of grey particles having velocity in the interval 0.3 S P S 0.7. (N ) is considered a good measure of the number of collisions (vj made by the incident hadron inside the struck nucleus (1 1 -15).…”

Section: Introductionmentioning

confidence: 99%

Some interesting features of charged particles produced in high-energy hadron–emulsion collisions

Khushnood¹,

Ansari²,

Irfan³

et al. 1990

Can. J. Phys.

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The emission characteristics of secondary charged particles produced in 400 GeV proton-emulsion interactions were compared with those obtained at other energies. The results revealed that the angular distribution of grey particles does not depend on the nature and energy of the projectile. The dependence of the average multiplicity of the grey, black, shower, and heavily ionizing tracks on the mass of the target nucleus (A) and the nature and energy of the projectiles are also examined. The ratio of the valance quarks in pions ( n -) and protons (p) was found to be almost equal to the ratio of the grey particles produced in .rr--A and p-A collisions at the same energy. The values of the normalized moments of the multiplicity distributions of charged shower particles in different N,, intervals were found to be nearly the same. However, this value increased with increasing values of the moment index, K. Finally, the values of the normalized and central moments were almost equal for both p-p and p-A interactions.Les caractCristiques de I'emission de particules secondaires chargtes dans les interactions de protons de 400 GeV dans des Cmulsions sont comparCes avec celles qu'on a observCes i d'autres Cnergies. Les rCsultats rCvklent que la distribution angulaire des particules grises ne dipend pas de la nature et de 1'Cnergie du projectile. On examine aussi l'influence de la masse du noyau cible (A), ainsi que de la nature et de 1'Cnergie des projectiles, sur la multiplicitC moyenne des particules grises ou noires, des cascades et des traces de forte ionisation. On observe que le rapport des quarks de valence dans les pions (a-) et les protons (p) est presque Cgal au rapport des particules grises produites dans les collisions n--A et p-A B la m&me Cnergie. On trouve que les valeurs des moments normalisCs des distributions de multiplicitt dans les cascades de particules chargCes sont presque les mCmes dans differents intervalles N,. La valeur augmente cependant avec la valeur de l'indice K du moment. Enfin, les valeurs des moments normalisCs et des moments centraux sont presque les mCmes pour les interactions p-p et les interactions p-A.[Traduit par la revue]Can. I. Phys. 68, 67 (1990)

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Section: Introductionmentioning

confidence: 99%

Some interesting features of charged particles produced in high-energy hadron–emulsion collisions

Khushnood¹,

Ansari²,

Irfan³

et al. 1990

Can. J. Phys.

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“…The pseudorapidity distributions of combined shower and gray particles produced in minimum-bias p-Em collisions at high energies are presented in Fig. 3 [38,39]. The solid curves are our calculated results using Eq.…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

Dependence of charged particle pseudorapidity distributions on centrality and energy inp(d)Acollisions at high energies

Liu

2008

Phys. Rev. C

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The pseudorapidity distributions of charged particles produced in deuteron-gold (d-Au) and proton-emulsion (p-Em) collisions at high energies are studied in the framework of the two-cylinder model. The experimental results of nuclear reactions induced by protons and deuterons [p(d)A collisions] can be simply described by this model. The dependencies of parameter values on centrality for d-Au collisions and on nucleon-nucleon center-of-mass energy for p-Em collisions are obtained. The formula obtained by this model is a unified formula in the description of (pseudo)rapidity distributions of final-state particles produced in different interactions over an energy range from intermediate accelerator energy to ultrahigh cosmic-ray energy.

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“…The theoretical Gaussian distribution f (η) ∝ (σ √ 2π) −1 ·exp(− (ν−η) 2 2σ 2 ) has two parameters (a mathematical expectation ν and variance σ), which depend on the physical conditions that arise in each collision (see [6]). Therefore, for example, the total inclusive theoretical and experimental [5] distributions differ from the Gaussian distribution. The theory of mathematical statistics [7] offers asymmetry g 1 and excess g 2 , which do not depend on these parameters ν and σ but they are sensitive to the shape of the distribution :…”

Section: Parametrically Invariant Variablesmentioning

confidence: 99%

“…Our experimental data (Baton Rouge-Krakow-Moscow-Tashkent Collaboration [5]) are (central) collisions of protons with energies of 0.8 TeV with emulsion nuclei. This energy is less than the energy at which ATLAS [1,2] collaboration is working, and so the cross section of the hard jet production is small.…”

Section: Introductionmentioning

confidence: 99%

Formation of Relativistic Non-Viscous Fluid in Central Collisions of Protons with an Energy of 0.8 Tev with Photoemulsion Nuclei

Abdurakhmanov¹

2013

AJMP

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By the methods of mathematical statistics we test a qualitative prediction of the old theory of relativistic hydrodynamics non-viscous liquid which can be used as a part of the process of hadronization within the modern hydrodynamical approach for the description of the quark-gluon plasma. Experimental data on the interaction of protons with the energies of 0.8 TeV with emulsion nuclei are used. Results do not contradict the formation of relativistic ideal non-viscous liquid in rare central collisions. * Electronic address: lugovoi@uzsci.net

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Charged-particle multiplicity and angular distributions in proton-emulsion interactions at 800 GeV

Cited by 37 publications

References 11 publications

Some interesting features of charged particles produced in high-energy hadron–emulsion collisions

Some interesting features of charged particles produced in high-energy hadron–emulsion collisions

Dependence of charged particle pseudorapidity distributions on centrality and energy inp(d)Acollisions at high energies

Formation of Relativistic Non-Viscous Fluid in Central Collisions of Protons with an Energy of 0.8 Tev with Photoemulsion Nuclei

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