Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions

GUO Yuan-Yuan; ZENG Jie; YIN Jian-Wu

Chinese Physics C> 2001, Vol. 25> Issue(11) : 1084-1088

Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China2 Department of Physics,Huanggang Teacher's College,Hubei 438000,China

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Abstract：
The dynamical fluctuations inside jets in the p-p collisions at CERN SppS collider are studied using Monte Carlo method. The event sample is produced using the LUND Monte Carlo generator PYTHIA5.5(JETSET7.3). The jets are identified by "cone" jet algorithm. The vector sum of the momenta of all the particles inside a jet is defined as the axis of this jet. Rapidity y,transverse momentum p_t and azimuzal angle φ are defined with respect to this axis. Second order factorial moments are calculated for these variables and the Hurst exponents H_ij=lnλ/lnλ_j(1+γ_j)/(1+γ_i) are obtained. The results show that H_ypt≈0.74,H_yφ≈0.82 both are less than unity,while H_ptφ≈1.11 is near to unity. This means that the dynamical fluctuations inside jets have approximately the similar property as those in fixed target hadron hadron collisions at SPS, i.e. anisotropic in the longitudinal transverse directions while isotropic in the transverse plan.

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GUO Yuan-Yuan, ZENG Jie and YIN Jian-Wu. Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions[J]. Chinese Physics C, 2001, 25(11): 1084-1088.

GUO Yuan-Yuan, ZENG Jie and YIN Jian-Wu. Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions[J]. Chinese Physics C, 2001, 25(11): 1084-1088. shu

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Received: 2000-12-11
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沈阳化工大学材料科学与工程学院沈阳 110142

Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions

Corresponding author: GUO Yuan-Yuan,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China2 Department of Physics,Huanggang Teacher's College,Hubei 438000,China

Received Date: 2000-12-11

Accepted Date: 1900-01-01

Available Online: 2001-11-05

Abstract: The dynamical fluctuations inside jets in the p-p collisions at CERN SppS collider are studied using Monte Carlo method. The event sample is produced using the LUND Monte Carlo generator PYTHIA5.5(JETSET7.3). The jets are identified by "cone" jet algorithm. The vector sum of the momenta of all the particles inside a jet is defined as the axis of this jet. Rapidity y,transverse momentum p_t and azimuzal angle φ are defined with respect to this axis. Second order factorial moments are calculated for these variables and the Hurst exponents H_ij=lnλ/lnλ_j(1+γ_j)/(1+γ_i) are obtained. The results show that H_ypt≈0.74,H_yφ≈0.82 both are less than unity,while H_ptφ≈1.11 is near to unity. This means that the dynamical fluctuations inside jets have approximately the similar property as those in fixed target hadron hadron collisions at SPS, i.e. anisotropic in the longitudinal transverse directions while isotropic in the transverse plan.

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Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions

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