Measurement of forward W → eν production in pp collisions at s = 8 √s=8 TeV
Name
Aaij2016_Article_MeasurementOfForwardWEνProduct.pdf
Description
Published version
Size
771.31 KB
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Unknown
Checksum (MD5)
40c52c70be0dcd064babef4719f8db47
Author(s)
The LHCb Collaboration
Boettcher, Thomas Julian
Ilten, Philip J
Williams, Michael
Date Issued
2016
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Aaij, R., et al. "Measurement of Forward W -> E Nu Production in Pp Collisions at Root S=8 Tev." Journal of High Energy Physics 10 (2016): 29.
Version
Final published version
Abstract
© 2016, The Author(s). A measurement of the cross-section for W → eν production in pp collisions is presented using data corresponding to an integrated luminosity of 2 fb−1 collected by the LHCb experiment at a centre-of-mass energy of √s=8 TeV. The electrons are required to have more than 20 GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. The inclusive W production cross-sections, where the W decays to eν, are measured to be (Formula presented.) where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. Differential cross-sections as a function of the electron pseudorapidity are measured. The W+/W− cross-section ratio and production charge asymmetry are also reported. Results are compared with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. Finally, in a precise test of lepton universality, the ratio of W boson branching fractions is determined to be B(W → eν)=B(W → µν) = 1:020 ± 0:002 ± 0:019 where the first uncertainty is statistical and the second is systematic.[Figure not available: see fulltext.]
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP10(2016)030
