CTEQ-TEA parton distribution functions and HERA Run I and II combined data - INSPIRE

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CTEQ-TEA parton distribution functions and HERA Run I and II combined data

Tie-Jiun Hou
(
- Southern Methodist U.
)
,
Sayipjamal Dulat
(
- Xinjiang U. and
- Michigan State U.
)
,
Jun Gao
(
- Argonne and
- Shanghai Jiao Tong U.
)
,
Marco Guzzi
(
- Manchester U.
)
,
Joey Huston
(
- Michigan State U.
)

Sep 26, 2016

12 pages

Published in:

Phys.Rev.D 95 (2017) 3, 034003

Published: Feb 6, 2017

e-Print:

1609.07968 [hep-ph]

DOI:

10.1103/PhysRevD.95.034003

Experiments:

HERA

View in:

ADS Abstract Service

reference search52 citations

Citations per year

Abstract: (APS)

We analyze the impact of the recent HERA Run I+II combination of inclusive deep inelastic scattering cross-section data on the CT14 global analysis of parton distribution functions (PDFs). New PDFs at next-to-leading order and next-to-next-to-leading order, called CT14HERA2, are obtained by a refit of the CT14 data ensembles, in which the HERA Run I combined measurements are replaced by the new HERA Run I+II combination. The CT14 functional parametrization of PDFs is flexible enough to allow good descriptions of different flavor combinations, so we use the same parametrization for CT14HERA2 but with an additional shape parameter for describing the strange quark PDF. We find that the HERA I+II data can be fit reasonably well, and both CT14 and CT14HERA2 PDFs can describe equally well the non-HERA data included in our global analysis. Because the CT14 and CT14HERA2 PDFs agree well within the PDF errors, we continue to recommend CT14 PDFs for the analysis of LHC Run 2 experiments.

Note:

19 pages, 6 figures and 3 tables

interpretation of experiments: DESY HERA Stor
H1
ZEUS
deep inelastic scattering: inclusive reaction
parton: distribution function
quantum chromodynamics: correction
correction: higher-order
higher-order: 1
higher-order: 2

References(68)

Figures(28)

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)
,
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,
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