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SUMMARY:Sivers asymmetries of charged pions in muons semi inclusive deep i
 nelastic scattering off polarized protons in PYTHIA8+StringSpinner model
DTSTART;VALUE=DATE-TIME:20241022T140500Z
DTEND;VALUE=DATE-TIME:20241022T160000Z
DTSTAMP;VALUE=DATE-TIME:20260517T213340Z
UID:indico-contribution-4408@cern.ch
DESCRIPTION:Speakers: Andrey Lobanov (SPbPU)\, Evgenii Muzyaev (Peter the 
 Great St.Petersburg Polytechnic University)\nThe semi-inclusive deep inela
 stic scattering (SIDIS) of a lepton on a polarized proton provides a means
  of studying the internal structure of the proton. This scattering gives a
 n observable\, the Sivers asymmetry\, which can be measured for positive a
 nd negative pions productions within the scattering event. This measuremen
 t allows access to the Sivers parton distribution function (PDF).\n \nIn t
 his study\, we have devised a methodology for calculating the Sivers asymm
 etry using PYTHIA8 and modified in this report StringSpinner plugin for ch
 arged pions in the muon SIDIS on a polarized proton. To validate the devel
 oped method\, we present a comparison between the calculated Sivers asymme
 tries as a function of the Björken variable $x_{\\text{Bj}}$ and the expe
 rimental values obtained by the COMPASS experiment.\n\nWe acknowledge supp
 ort from Russian Ministry of Education and Science. State assignment for f
 undamental research (code FSEG-2024-0033)\n\nhttps://indico.particle.mephi
 .ru/event/436/contributions/4408/
LOCATION: Alexeevskiy hall
URL:https://indico.particle.mephi.ru/event/436/contributions/4408/
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