Programs in Physics & Physical Chemistry
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Programs in Physics & Physical Chemistry |
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| PROGRAM SUMMARY | ||
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| Manuscript Title: Direct solution of renormalization group equations of QCD in x-space: NLO implementations at leading twist | ||
| Authors: Alessandro Cafarella, Claudio Corianò | ||
| Program title: evolution.c | ||
| Catalogue identifier: ADUB | ||
| Journal reference: Comput. Phys. Commun. 160(2004)213 | ||
| Programming language: C. | ||
| Computer: Athlon 1800 plus. | ||
| Operating system: Linux. | ||
| Peripherals: Laser printer. | ||
| Keywords: Polarized and unpolarized parton distribution, Numerical solutions of renormalization group equation, Quantum chromodynamics. | ||
| Classification: 11.5. | ||
Nature of problem: The program provided here solves the DGLAP evolution equations to next-to-leading order αs, for unpolarized, longitudinally polarized and transversely polarized parton distributions. | ||
Solution method: We use a recursive method based on an expansion of the solution in powers of log(αs(Q)/αs(Q0)). | ||
Running time: About 1 minute and 30 seconds for the unpolarized and longitudinally polarized cases and 1 minute for the transversely polarized case. |
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