Measurement of the cross-section for W boson production in association with b-jets in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector - INSPIRE

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Measurement of the cross-section for W boson production in association with b-jets in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

ATLAS

Collaboration

Feb 12, 2013

31 pages

Published in:

JHEP 06 (2013) 084

Published: Jun 20, 2013

e-Print:

1302.2929 [hep-ex]

DOI:

10.1007/JHEP06(2013)084

Report number:

CERN-PH-EP-2012-357

Experiments:

CERN-LHC-ATLAS

View in:

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reference search154 citations

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Abstract: (Springer)

This paper reports a measurement of the W+b-jets (W+b+X and W+

b\bar{b}

+X) production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. These results are based on data corresponding to an integrated luminosity of 4.6 fb

^{-1}

, collected with the ATLAS detector. Cross-sections are presented as a function of jet multiplicity and of the transverse momentum of the leading b-jet for both the muon and electron decay modes of the W boson. The W+b-jets cross-section, corrected for all known detector eects, is quoted in a limited kinematic range. Combining the muon and electron channels, the ducial cross-section for W+b-jets is measured to be 7.1

\pm

0.5 (stat)

\pm

1.4 (syst) pb, consistent with the next-to-leading order QCD prediction, corrected for non-perturbative and double-parton interactions (DPI) contributions, of 4.7

\pm

0.09 (stat)

^{+0.60}_{-0.49}

(scale)

\pm

0.06 (PDF)

\pm

0.16 (non-pert)

^{+0.52}_{-0.38}

(DPI) pb.

Note:

31 pages plus author list (53 pages total), 9 figures, 10 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2012-11/

jet: bottom
p p: scattering
W: leptonic decay
W: hadroproduction
bottom: associated production
higher-order: 1
jet: multiplicity
transverse momentum dependence
ATLAS
cross section: measured

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