We study the effects of running coupling and gluon number fluctuations in the latest diffractive deep inelastic scattering data.It is found that the description of the data is improved once the running coupling and gl...We study the effects of running coupling and gluon number fluctuations in the latest diffractive deep inelastic scattering data.It is found that the description of the data is improved once the running coupling and gluon number fluctuations are included with x^2/d.o.i.=0.867,x^2/d.o.f.=0.923 and x^2/d.o.f.=0.878 for three different groups of experimental data.The values of diffusive coefficient subtracted from the fit are smaller than the ones obtained by considering only the gluon number fluctuations in our previous studies.The smaller values of the diffusive coefficient are in agreement with the theoretical predictions,where the gluon number fluctuations are suppressed by the running coupling which leads to smaller values of the diffusive coefficient.展开更多
An analytic massive total cross section of photon-proton scattering is derived,which has geometric scaling.A geometric scaling is used to perform a global analysis of the deep inelastic scattering data on inclusive st...An analytic massive total cross section of photon-proton scattering is derived,which has geometric scaling.A geometric scaling is used to perform a global analysis of the deep inelastic scattering data on inclusive structure function F_2 measured in lepton-hadron scattering experiments at small values of Bjorken x.It is shown that the descriptions of the inclusive structure function F_2 and longitudinal structure function F_1,are improved with the massive analytic structure function,which may imply the gluon saturation effect dominating the parton evolution process at HERA.The inclusion of the heavy quarks prevent the divergence of the lepton-hadron cross section,which plays a significant role in the description of the photoproduction region.展开更多
研究了15 Me V/u197Au+197Au体系三裂变反应过程中体系的集体运动动能、核-核相互作用势、集体运动总动能以及核子激发能的演化过程,并讨论了该反应过程的能量耗散问题。通过与两裂变时体系总动能εtot和Θc.m.关联图作对比,初步得出三...研究了15 Me V/u197Au+197Au体系三裂变反应过程中体系的集体运动动能、核-核相互作用势、集体运动总动能以及核子激发能的演化过程,并讨论了该反应过程的能量耗散问题。通过与两裂变时体系总动能εtot和Θc.m.关联图作对比,初步得出三裂变反应体系的第一次裂变是极端深度非弹性散射过程;进一步分析了三裂变与两裂变反应体系总动能与碰撞参数的关系,发现小碰撞参数下两裂变比三裂变反应耗散的能量多大约150 Me V,大碰撞参数下三裂变比两裂变反应多消耗300 Me V。展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11305040,11505036 and 11447203the Education Department of Guizhou Province Talent Fund under Grant No[2015]5508the Science and Technology Department of Guizhou Province Fund under Grant Nos[2015]2114 and [2014]7053
文摘We study the effects of running coupling and gluon number fluctuations in the latest diffractive deep inelastic scattering data.It is found that the description of the data is improved once the running coupling and gluon number fluctuations are included with x^2/d.o.i.=0.867,x^2/d.o.f.=0.923 and x^2/d.o.f.=0.878 for three different groups of experimental data.The values of diffusive coefficient subtracted from the fit are smaller than the ones obtained by considering only the gluon number fluctuations in our previous studies.The smaller values of the diffusive coefficient are in agreement with the theoretical predictions,where the gluon number fluctuations are suppressed by the running coupling which leads to smaller values of the diffusive coefficient.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11305040,11375071 and 11447203the Education Department of Guizhou Province Innovation Talent Fund under Grant No[2015]5508+2 种基金the Education Department of Guizhou Province Innovation Team Fund under Grant No[2014]35the Guizhou Province Science Technology Foundation under Grant No[2015]2114the Guizhou Province Innovation Talent Team Fund under Grant No[2015]4015
文摘An analytic massive total cross section of photon-proton scattering is derived,which has geometric scaling.A geometric scaling is used to perform a global analysis of the deep inelastic scattering data on inclusive structure function F_2 measured in lepton-hadron scattering experiments at small values of Bjorken x.It is shown that the descriptions of the inclusive structure function F_2 and longitudinal structure function F_1,are improved with the massive analytic structure function,which may imply the gluon saturation effect dominating the parton evolution process at HERA.The inclusion of the heavy quarks prevent the divergence of the lepton-hadron cross section,which plays a significant role in the description of the photoproduction region.
文摘研究了15 Me V/u197Au+197Au体系三裂变反应过程中体系的集体运动动能、核-核相互作用势、集体运动总动能以及核子激发能的演化过程,并讨论了该反应过程的能量耗散问题。通过与两裂变时体系总动能εtot和Θc.m.关联图作对比,初步得出三裂变反应体系的第一次裂变是极端深度非弹性散射过程;进一步分析了三裂变与两裂变反应体系总动能与碰撞参数的关系,发现小碰撞参数下两裂变比三裂变反应耗散的能量多大约150 Me V,大碰撞参数下三裂变比两裂变反应多消耗300 Me V。
