Measurement of the electron charge asymmetry in inclusive W production with CMS data taken at 13 TeV.

D'Uffizi M. per la Collaborazione CMS

Comunicazione
I - Fisica nucleare e subnucleare
Aula 32B-1 - Martedì 18 h 10:45 - 13:00
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The measurement of the electron charge asymmetry in inclusive W production has been performed for the first time with CMS data taken at 13 TeV. The result may contribute to the knowledge of the internal structure of the proton, providing information on the up and down quark distribution functions. A method to estimate the signal and background yields with a fit to the missing transverse energy distribution is implemented. After an introduction on the different sources of systematic uncertainties, dominant in this measurement, one of the most important, the rate of incorrect charge identification of electrons, is described in full detail. The measured asymmetry shape is in agreement with the Standard Model expectations.

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