Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic $ep$ scattering at HERA - INSPIRE

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Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic $ep$ scattering at HERA

H1 and
ZEUS

Collaborations

•

H. Abramowicz
(
- Tel Aviv U. and
- Munich, Max Planck Inst.
)

Apr 3, 2018

58 pages

Published in:

Eur.Phys.J.C 78 (2018) 6, 473

Published: Jun 9, 2018

e-Print:

1804.01019 [hep-ex]

DOI:

10.1140/epjc/s10052-018-5848-3

PDG:

{\mathit {\mathit c}}

Report number:

DESY 18-037,
DESY-18-037

Experiments:

View in:

reference search141 citations

Citations per year

Abstract: (Springer)

Measurements of open charm and beauty production cross sections in deep inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum transfer squared of the photon

2.5~\hbox {GeV}^2\le Q^2 \le 2000\, \hbox {GeV}^2

and Bjorken scaling variable

3 \cdot 10^{-5} \le x_\mathrm{Bj} \le 5 \cdot 10^{-2}

. The combination method accounts for the correlations of the statistical and systematic uncertainties among the different datasets. Perturbative QCD calculations are compared to the combined data. A next-to-leading order QCD analysis is performed using these data together with the combined inclusive deep inelastic scattering cross sections from HERA. The running charm- and beauty-quark masses are determined as

m_c(m_c) = 1.290^{+0.046-0.041} \mathrm{(exp/fit)}

{}^{+0.062-0.014} \mathrm{(model)}

{}^{+0.003-0.031} \mathrm{(parameterisation)}

GeV and

m_b(m_b) = 4.049^{+0.104-0.109} \mathrm{(exp/fit)}

{}^{+0.090-0.032} \mathrm{(model)}

{}^{+0.001-0.031} \mathrm{(parameterisation)}~\mathrm{GeV}

.

Note:

58 pages, 22 figures, submitted to EPJ C

experimental results
deep inelastic scattering: inclusive reaction
quantum chromodynamics: perturbation theory
scaling: Bjorken
higher-order: 1
charm: production
bottom: production
data analysis method
statistical analysis
kinematics

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