Sensitive Observables for Color Connections in Three-Jet Events at Z<SUP>0</SUP> Pole

SHAO Feng-Lan; XIE Qu-Bing; LI Shi-Yuan

Chinese Physics C> 2003, Vol. 27> Issue(6) : 479-483

Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole

School of Physics and Microelectronics, Shandong University, Ji′nan 250100, China

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Abstract：
By substituting the color separate singlet connections for the color neutral flow connections into JETSET7.4, we select the three-jet events according to DURHAM algorithm in e⁺e^－ annihilation at Z⁰ pole. We find that the ratio of the special three-jet events defined by constraining the angles between different jets is sensitive to different kinds of color connections. For these special events, different connections lead to significant differences for the charged particle multiplicity of events and properties of the gluon jet. The differences become larger as y_cut getting smaller. By taking appropriate y_cut, as 0.0005 in this paper, the differences between these two kinds of color connections should be discriminated by experiments.

References

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SHAO Feng-Lan, XIE Qu-Bing and LI Shi-Yuan. Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole[J]. Chinese Physics C, 2003, 27(6): 479-483.

SHAO Feng-Lan, XIE Qu-Bing and LI Shi-Yuan. Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole[J]. Chinese Physics C, 2003, 27(6): 479-483. shu

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Received: 2002-11-25
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole

Corresponding author: SHAO Feng-Lan,

School of Physics and Microelectronics, Shandong University, Ji′nan 250100, China

Received Date: 2002-11-25

Accepted Date: 1900-01-01

Available Online: 2003-06-05

Abstract: By substituting the color separate singlet connections for the color neutral flow connections into JETSET7.4, we select the three-jet events according to DURHAM algorithm in e⁺e^－ annihilation at Z⁰ pole. We find that the ratio of the special three-jet events defined by constraining the angles between different jets is sensitive to different kinds of color connections. For these special events, different connections lead to significant differences for the charged particle multiplicity of events and properties of the gluon jet. The differences become larger as y_cut getting smaller. By taking appropriate y_cut, as 0.0005 in this paper, the differences between these two kinds of color connections should be discriminated by experiments.

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Sensitive Observables for Color Connections in Three-Jet Events at Z0 Pole

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Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole

Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole