Chinese Physics C > 2007, Vol. 31 > Issue(2): 119-124

A Monte Carlo Study on the Reconstruction Method for Instanton in Deep-Inelastic e⁺p Scattering

XU Ming-Mei,
LIU Lian-Shou^,

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

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Abstract：
Instantons can induce characteristic events in deep-inelastic e ⁺p scattering. Such effects are expected to become sizable in QCD. In the present paper QCD-instanton induced events are modelled by the Monte Carlo generator QCDINS. Different methods to reconstruct the instanton part and the current jet are tried in the boson-gluon fusion events of deep-inelastic e ⁺p scattering with instantons as background, using QCDINS Monte Carlo event generator. A comparison among these methods are performed and an optimum method is proposed, which can reconstruct well the energies of current jet and instanton as well as the mass of instanton. The proposed method will be useful in the Monte Carlo study of the physical properties of instanton, and can serve as a reference in the experimental identification of instanton.

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XU Ming-Mei and LIU Lian-Shou. A Monte Carlo Study on the Reconstruction Method for Instanton in Deep-Inelastic e ⁺p Scattering[J]. Chinese Physics C, 2007, 31(2): 119-124.

XU Ming-Mei and LIU Lian-Shou. A Monte Carlo Study on the Reconstruction Method for Instanton in Deep-Inelastic e ⁺p Scattering[J]. Chinese Physics C, 2007, 31(2): 119-124. shu

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Received: 2006-06-26
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

A Monte Carlo Study on the Reconstruction Method for Instanton in Deep-Inelastic e⁺p Scattering

XU Ming-Mei
LIU Lian-Shou^,

Corresponding author:LIU Lian-Shou,

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Received Date:2006-06-26
Accepted Date:1900-01-01
Available Online:2007-02-05

Abstract:Instantons can induce characteristic events in deep-inelastic e⁺p scattering. Such effects are expected to become sizable in QCD. In the present paper QCD-instanton induced events are modelled by the Monte Carlo generator QCDINS. Different methods to reconstruct the instanton part and the current jet are tried in the boson-gluon fusion events of deep-inelastic e⁺p scattering with instantons as background, using QCDINS Monte Carlo event generator. A comparison among these methods are performed and an optimum method is proposed, which can reconstruct well the energies of current jet and instanton as well as the mass of instanton. The proposed method will be useful in the Monte Carlo study of the physical properties of instanton, and can serve as a reference in the experimental identification of instanton.

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A Monte Carlo Study on the Reconstruction Method for Instanton in Deep-Inelastic e⁺p Scattering

A Monte Carlo Study on the Reconstruction Method for Instanton in Deep-Inelastic e⁺p Scattering