Gluon number fluctuations with heavy quarks at HERA

ZHU Xiang-Rong; ZHOU Dai-Cui

doi:10.1088/1674-1137/35/10/003

Chinese Physics C> 2011, Vol. 35> Issue(10) : 902-907 DOI: 10.1088/1674-1137/35/10/003

Gluon number fluctuations with heavy quarks at HERA

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Abstract：
We study the effect of gluon number fluctuations (Pomeron loops) on the proton structure function at HERA. It is shown that the description of charm and bottom quarks and longitudinal structure functions are improved, with χ²/d.o.f,=0.803 (fluctuations) as compared with χ²/d.o.f,=0.908 (without fluctuations), once the gluon number fluctuations are included. We find that in the gluon number fluctuation case the heavy quarks do not play an important role in the proton structure function as the saturation model. The successful description of the HERA data indicates that the gluon number fluctuation could be one of the key mechanisms to describe the proton structure function at HERA energies.

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ZHU Xiang-Rong and ZHOU Dai-Cui. Gluon number fluctuations with heavy quarks at HERA[J]. Chinese Physics C, 2011, 35(10): 902-907. doi: 10.1088/1674-1137/35/10/003

ZHU Xiang-Rong and ZHOU Dai-Cui. Gluon number fluctuations with heavy quarks at HERA[J]. Chinese Physics C, 2011, 35(10): 902-907. doi: 10.1088/1674-1137/35/10/003 shu

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Received: 2010-12-10
Revised: 2011-02-17

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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

Gluon number fluctuations with heavy quarks at HERA

Received Date: 2010-12-10

Accepted Date: 2011-02-17

Available Online: 2011-10-05

Abstract: We study the effect of gluon number fluctuations (Pomeron loops) on the proton structure function at HERA. It is shown that the description of charm and bottom quarks and longitudinal structure functions are improved, with χ²/d.o.f,=0.803 (fluctuations) as compared with χ²/d.o.f,=0.908 (without fluctuations), once the gluon number fluctuations are included. We find that in the gluon number fluctuation case the heavy quarks do not play an important role in the proton structure function as the saturation model. The successful description of the HERA data indicates that the gluon number fluctuation could be one of the key mechanisms to describe the proton structure function at HERA energies.

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Gluon number fluctuations with heavy quarks at HERA

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Gluon number fluctuations with heavy quarks at HERA

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