Gluon number fluctuations with heavy quarks at HERA

被引：0

作者：

Zhu Xiang-Rong ^{[1
,2
]}

Zhou Dai-Cui ^{[1
,2
]}

机构：

[1] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

[2] Huazhong Normal Univ, Key Lab Quark & Lepton Phys, Minist Educ, Wuhan 430079, Peoples R China

来源：

CHINESE PHYSICS C | 2011年 / 35卷 / 10期

关键词：

deep inelastic scattering; gluon number fluctuations; proton structure function; PROTON STRUCTURE-FUNCTION; HIGH-ENERGY; DIPOLE PICTURE; CROSS-SECTION; LOW Q(2); LOW X; SATURATION; QCD; SCATTERING; EVOLUTION;

D O I：

10.1088/1674-1137/35/10/003

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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 chi(2)/d.o.f=0.803 (fluctuations) as compared with chi(2)/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.

引用

页码：902 / 907

页数：6

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