Measurement of the forward-backward asymmetry in Z/γ* → μ⁺μ⁻ decays and determination of the effective weak mixing angle
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10.1007_JHEP11(2015)190.pdf
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Author(s)
LHCB Collaboration
Ilten, Philip J
Williams, Michael
Date Issued
November 2015
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
Aaij, R. et al. “Measurement of the forward-backward asymmetry in Z/γ* → μ⁺μ⁻ decays and determination of the effective weak mixing angle.” Journal of High Energy Physics 2015, 11 (November 2015): 190 © 2015 The Author(s)
Version
Final published version
Abstract
The forward-backward charge asymmetry for the process (Formula presented). is measured as a function of the invariant mass of the dimuon system. Measurements are performed using proton proton collision data collected with the LHCb detector at √s=7 and 8 TeV, corresponding to integrated luminosities of 1 fb⁻¹ and 2 fb⁻¹ respectively. Within the Standard Model the results constrain the effective electroweak mixing angle to be (Formula presented).where the first uncertainty is statistical, the second systematic and the third theoretical. This result is in agreement with the current world average, and is one of the most precise determinations at hadron colliders to date. Keywords: Electroweak interaction; Forward physics; Hadron-Hadron Scattering
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/JHEP11(2015)190
