Strong coupling constant from scaling violations in fragmentation functions.

Strong coupling constant from scaling violations in fragmentation functions.
复制标题

碎片函数中缩放违规带来的强耦合常数。

DOI:
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发表时间:
2000
影响因子:
8.6
通讯作者:
B. Pötter
B. Pötter
中科院分区:
物理与天体物理1区
文献类型:
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作者:
B. Kniehl;G. Kramer;B. Pötter

文献摘要

被引文献

相似文献

我们提出了一个新的确定强耦合常数α(s)通过标度破坏的碎裂函数的带电π介子,带电K介子和质子。在我们的拟合中,我们包含了来自CERN LEP 1和SLAC SLC关于Z玻色子共振的最新e+e-湮没数据,以及来自SLAC PEP在质量中心能量平方根s = 29 GeV的较旧但非常精确的数据。在次前导阶,我们发现alpha(s)(5)(M(Z))= 0.1170+/-0.0073。给出了alpha(s)的新的世界平均值。
We present a new determination of the strong coupling constant alpha(s) through the scaling violations in the fragmentation functions for charged pions, charged kaons, and protons. In our fit we include the latest e+e- annihilation data from CERN LEP1 and SLAC SLC on the Z-boson resonance and older, yet very precise, data from SLAC PEP at center-of-mass energy sqaure root of s = 29 GeV. At next-to-leading order, we find alpha(s)(5)(M(Z)) = 0.1170+/-0.0073. A new world average of alpha(s) is given.