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Measurement of the inclusive jet cross-section in pp collisions at [Formula: see text] and comparison to the inclusive jet cross-section at [Formula: see text] using the ATLAS detector.

- Eur Phys J C Part Fields (2013)

Bottom Line: The inclusive jet double-differential cross-section is presented as a function of the jet transverse momentum p T and jet rapidity y, covering a range of 20≤p T<430 GeV and /y/<4.4.The systematic uncertainties on the ratios are significantly reduced due to the cancellation of correlated uncertainties in the two measurements.Results are compared to the prediction from next-to-leading order perturbative QCD calculations corrected for non-perturbative effects, and next-to-leading order Monte Carlo simulation.

View Article: PubMed Central - PubMed

Affiliation: Fakultät für Mathematik und Physik, Albert-Ludwigs-Universität, Freiburg, Germany.

ABSTRACT

The inclusive jet cross-section has been measured in proton-proton collisions at [Formula: see text] in a dataset corresponding to an integrated luminosity of [Formula: see text] collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-k t algorithm with two radius parameters of 0.4 and 0.6. The inclusive jet double-differential cross-section is presented as a function of the jet transverse momentum p T and jet rapidity y, covering a range of 20≤p T<430 GeV and /y/<4.4. The ratio of the cross-section to the inclusive jet cross-section measurement at [Formula: see text], published by the ATLAS Collaboration, is calculated as a function of both transverse momentum and the dimensionless quantity [Formula: see text], in bins of jet rapidity. The systematic uncertainties on the ratios are significantly reduced due to the cancellation of correlated uncertainties in the two measurements. Results are compared to the prediction from next-to-leading order perturbative QCD calculations corrected for non-perturbative effects, and next-to-leading order Monte Carlo simulation. Furthermore, the ATLAS jet cross-section measurements at [Formula: see text] and [Formula: see text] are analysed within a framework of next-to-leading order perturbative QCD calculations to determine parton distribution functions of the proton, taking into account the correlations between the measurements.

No MeSH data available.


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Inclusive jet double-differential cross-section as a function of the jet pT in bins of rapidity, for anti-kt jets with R=0.6. For presentation, the cross-section is multiplied by the factors indicated in the legend. The shaded area indicates the experimental systematic uncertainties. The data are compared to NLO pQCD predictions calculated using NLOJET++ with the CT10 PDF set, to which non-perturbative corrections have been applied. The hashed area indicates the predictions with their uncertainties. The 2.7 % uncertainty from the luminosity measurements is not shown
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Fig7: Inclusive jet double-differential cross-section as a function of the jet pT in bins of rapidity, for anti-kt jets with R=0.6. For presentation, the cross-section is multiplied by the factors indicated in the legend. The shaded area indicates the experimental systematic uncertainties. The data are compared to NLO pQCD predictions calculated using NLOJET++ with the CT10 PDF set, to which non-perturbative corrections have been applied. The hashed area indicates the predictions with their uncertainties. The 2.7 % uncertainty from the luminosity measurements is not shown

Mentions: The inclusive jet double-differential cross-section is shown in Figs. 6 and 7 for jets reconstructed with the anti-kt algorithm with R=0.4 and R=0.6, respectively. The measurement spans jet transverse momenta from 20 GeV to 430 GeV in the rapidity region of /y/<4.4, covering seven orders of magnitude in cross-section. The results are compared to NLO pQCD predictions calculated with NLOJET++ using the CT10 PDF set. Corrections for non-perturbative effects are applied. Fig. 6


Measurement of the inclusive jet cross-section in pp collisions at [Formula: see text] and comparison to the inclusive jet cross-section at [Formula: see text] using the ATLAS detector.

- Eur Phys J C Part Fields (2013)

Inclusive jet double-differential cross-section as a function of the jet pT in bins of rapidity, for anti-kt jets with R=0.6. For presentation, the cross-section is multiplied by the factors indicated in the legend. The shaded area indicates the experimental systematic uncertainties. The data are compared to NLO pQCD predictions calculated using NLOJET++ with the CT10 PDF set, to which non-perturbative corrections have been applied. The hashed area indicates the predictions with their uncertainties. The 2.7 % uncertainty from the luminosity measurements is not shown
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Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4400855&req=5

Fig7: Inclusive jet double-differential cross-section as a function of the jet pT in bins of rapidity, for anti-kt jets with R=0.6. For presentation, the cross-section is multiplied by the factors indicated in the legend. The shaded area indicates the experimental systematic uncertainties. The data are compared to NLO pQCD predictions calculated using NLOJET++ with the CT10 PDF set, to which non-perturbative corrections have been applied. The hashed area indicates the predictions with their uncertainties. The 2.7 % uncertainty from the luminosity measurements is not shown
Mentions: The inclusive jet double-differential cross-section is shown in Figs. 6 and 7 for jets reconstructed with the anti-kt algorithm with R=0.4 and R=0.6, respectively. The measurement spans jet transverse momenta from 20 GeV to 430 GeV in the rapidity region of /y/<4.4, covering seven orders of magnitude in cross-section. The results are compared to NLO pQCD predictions calculated with NLOJET++ using the CT10 PDF set. Corrections for non-perturbative effects are applied. Fig. 6

Bottom Line: The inclusive jet double-differential cross-section is presented as a function of the jet transverse momentum p T and jet rapidity y, covering a range of 20≤p T<430 GeV and /y/<4.4.The systematic uncertainties on the ratios are significantly reduced due to the cancellation of correlated uncertainties in the two measurements.Results are compared to the prediction from next-to-leading order perturbative QCD calculations corrected for non-perturbative effects, and next-to-leading order Monte Carlo simulation.

View Article: PubMed Central - PubMed

Affiliation: Fakultät für Mathematik und Physik, Albert-Ludwigs-Universität, Freiburg, Germany.

ABSTRACT

The inclusive jet cross-section has been measured in proton-proton collisions at [Formula: see text] in a dataset corresponding to an integrated luminosity of [Formula: see text] collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-k t algorithm with two radius parameters of 0.4 and 0.6. The inclusive jet double-differential cross-section is presented as a function of the jet transverse momentum p T and jet rapidity y, covering a range of 20≤p T<430 GeV and /y/<4.4. The ratio of the cross-section to the inclusive jet cross-section measurement at [Formula: see text], published by the ATLAS Collaboration, is calculated as a function of both transverse momentum and the dimensionless quantity [Formula: see text], in bins of jet rapidity. The systematic uncertainties on the ratios are significantly reduced due to the cancellation of correlated uncertainties in the two measurements. Results are compared to the prediction from next-to-leading order perturbative QCD calculations corrected for non-perturbative effects, and next-to-leading order Monte Carlo simulation. Furthermore, the ATLAS jet cross-section measurements at [Formula: see text] and [Formula: see text] are analysed within a framework of next-to-leading order perturbative QCD calculations to determine parton distribution functions of the proton, taking into account the correlations between the measurements.

No MeSH data available.


Related in: MedlinePlus