Solving QCD evolution equations in rapidity space with Markovian Monte Carlo

被引:0
|
作者
Golec-Biernati, K. [1 ,2 ]
Jadach, S. [1 ,3 ]
Placzek, W. [4 ]
Skrzypek, M. [1 ,3 ]
机构
[1] H Niewodniczanski Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
[2] Univ Rzeszow, Inst Phys, PL-35959 Rzeszow, Poland
[3] CERN, PH Dept, CH-1211 Geneva, Switzerland
[4] Jagiellonian Univ, Marian Smoluchowski Inst Phys, PL-30059 Krakow, Poland
来源
ACTA PHYSICA POLONICA B | 2008年 / 39卷 / 01期
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中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This work covers methodology of solving QCD evolution equation of the parton distribution using Markovian Monte Carlo (MMC) algorithms in a class of models ranging from DGLAP to CCFM. One of the purposes of the above MMCs is to test the other more sophisticated Monte Carlo programs, the so-called Constrained Monte Carlo (CMC) programs, which will be used as a building block in the parton shower MC. This is why the mapping of the evolution variables (eikonal variable and evolution time) into four-momenta is also defined and tested. The evolution time is identified with the rapidity variable of the emitted parton. The presented MMCs are tested independently, with similar to 0.1% precision, against the non-MC program APCheb especially devised for this purpose.
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页码:115 / 145
页数:31
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