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arXiv 1609.07417hep-ph
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来自全局拟合的PDF、$α_s$和夸克质量

PDFs, $α_s$, and quark masses from global fits

S. Alekhin, J. Bluemlein, S. Moch, R. Placakyte

摘要:

在更新的ABM 12拟合中,利用部分子分布函数(PDF),结合CERN-SPS、HERA、Tevatron和LHC的最新数据,计算了强耦合常数$α_s$和重夸克质量$m_c$、$m_b$、$m_t$. \begin{eqnarray} \nonumber α_s(M_Z)&=&0.1147\pm0.0008~({\rm exp.)},\\ \nonumber m_c(m_c)&=&1.252\pm 0.018~({\rm exp.})~{\rm GeV},\\ \nonumber m_b(m_b)&=&3.83\pm0.12~({\rm exp.})~{\rm GeV},\\ \nonumber m_t(m_t)&=&160.9\pm1.1~({\rm exp.})~{\rm GeV} \end{eqnarray}的值是在整个分析过程中采用$\overline{MS}$重夸克质量定义获得的。

英文摘要:

The strong coupling constant $α_s$ and the heavy-quark masses, $m_c$, $m_b$, $m_t$ are extracted simultaneosly with the parton distribution functions (PDFs) in the updated ABM12 fit including recent data from CERN-SPS, HERA, Tevatron, and the LHC. The values of \begin{eqnarray} \nonumber α_s(M_Z)&=&0.1147\pm0.0008~({\rm exp.)},\\ \nonumber m_c(m_c)&=&1.252\pm 0.018~({\rm exp.})~{\rm GeV},\\ \nonumber m_b(m_b)&=&3.83\pm0.12~({\rm exp.})~{\rm GeV},\\ \nonumber m_t(m_t)&=&160.9\pm1.1~({\rm exp.})~{\rm GeV} \end{eqnarray} are obtained with the $\overline{MS}$ heavy-quark mass definition being employed throughout the analysis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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