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About the rapidity and helicity distributions of the W bosons produced at LHC

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arxiv 1707.09344 v2 pith:BAUAYCCW submitted 2017-07-28 hep-ex hep-ph

About the rapidity and helicity distributions of the W bosons produced at LHC

classification hep-ex hep-ph
keywords bosonsdistributionsproducedhelicityrapiditytransverseanalysingcharacteristic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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$W$ bosons are produced at LHC from a forward-backward symmetric initial state. Their decay to a charged lepton and a neutrino has a strong spin analysing power. The combination of these effects results in characteristic distributions of the pseudorapidity of the leptons decaying from $W^+$ and $W^-$ of different helicity. This observation may open the possibility to measure precisely the $W^+$ and $W^-$ rapidity distributions for the two transverse polarisation states of $W$ bosons produced at small transverse momentum.

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  1. High-precision measurement of the W boson mass with the CMS experiment

    hep-ex 2024-12 unverdicted novelty 5.0

    CMS measures the W boson mass as 80360.2 ± 9.9 MeV from 2016 data, consistent with the Standard Model prediction.