New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC
New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC
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利用 LHC 的高精度数据对量子色动力学进行新的 CTEQ 全局分析
DOI:
10.1103/physrevd.103.014013
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发表时间:
2019-12
期刊:
影响因子:
--
通讯作者:
Yuan C-P
中科院分区:
文献类型:
--
作者:
Hou Tie-Jiun;Gao Jun;Hobbs T. J.;Xie Keping;Dulat Sayipjamal;Guzzi Marco;Huston Joey;Nadolsky Pavel;Pumplin Jon;Schmidt Carl;Sitiwaldi Ibrahim;Stump Daniel;Yuan C-P
We present the new parton distribution functions (PDFs) from the CTEQ-TEA collaboration, obtained using a wide variety of high-precision Large Hadron Collider (LHC) data, in addition to the combined HERA I+II deep-inelastic scattering data set, along with the data sets present in the CT14 global QCD analysis. New LHC measurements in single-inclusive jet production with the full rapidity coverage, as well as production of Drell-Yan pairs, top-quark pairs, and high-$p_T$ $Z$ bosons, are included to achieve the greatest sensitivity to the PDFs. The parton distributions are determined at NLO and NNLO, with each of these PDFs accompanied by error sets determined using the Hessian method. Fast PDF survey techniques, based on the Hessian representation and the Lagrange Multiplier method, are used to quantify the preference of each data set to quantities such as $\alpha_s(m_Z)$, and the gluon and strange quark distributions. We designate the main resulting PDF set as CT18. The ATLAS 7 TeV precision $W/Z$ data are not included in CT18, due to their tension with other data sets in the global fit. Alternate PDF sets are generated including the ATLAS precision 7 TeV $W/Z$ data (CT18A), a new scale choice for low-$x$ DIS data (CT18X), or all of the above with a slightly higher choice for the charm mass (CT18Z). Theoretical calculations of standard candle cross sections at the LHC (such as the $gg$ fusion Higgs boson cross section) are presented.
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DOI:
10.1088/0954-3899/22/6/013
发表时间:
1996-05
期刊:
Journal of Physics G
影响因子:
--
作者:
U. Yang;E. al.
通讯作者:
U. Yang;E. al.
影响因子:
5
作者:
C. Corianò;M. Guzzi
通讯作者:
C. Corianò;M. Guzzi
DOI:
10.1016/s0550-3213(97)00542-7
发表时间:
1997-05
期刊:
arXiv: High Energy Physics - Theory
影响因子:
--
作者:
P. Bowcock;M. Hayes;A. Taormina
通讯作者:
P. Bowcock;M. Hayes;A. Taormina
影响因子:
5
作者:
E. Berger;M. Guzzi;H. Lai;P. Nadolsky;F. Olness
通讯作者:
E. Berger;M. Guzzi;H. Lai;P. Nadolsky;F. Olness
影响因子:
5
作者:
C. Anastasiou;K. Melnikov;F. Petriello
通讯作者:
C. Anastasiou;K. Melnikov;F. Petriello