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Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized p plus p collisions at root s=510 GeV

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dc.contributor.authorAcharya, U.
dc.contributor.authorAdare, A.
dc.contributor.authorAidala, C.
dc.contributor.authorAjitanand, N. N.
dc.contributor.authorRiabov, V.
dc.contributor.authorSamsonov, V.
dc.contributor.authorTaranenko, A.
dc.contributor.authorРябов, Виктор Германович
dc.contributor.authorТараненко, Аркадий Владимирович
dc.date.accessioned2024-11-27T07:10:49Z
dc.date.available2024-11-27T07:10:49Z
dc.date.issued2020
dc.description.abstractThe PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, A(LL), for charged pions at midrapidity (vertical bar eta vertical bar < 0.35) in longitudinally polarized p + p collisions at root s. = 510 GeV. These measurements are sensitive to the gluon spin contribution to the total spin of the proton in the parton momentum fraction x range between 0.04 and 0.09. One can infer the sign of the gluon polarization from the ordering of pion asymmetries with charge alone. The asymmetries are found to be consistent with global quantum-chromodynamics fits of deep-inelastic scattering and data at root s = 200 GeV, which show a nonzero positive contribution of gluon spin to the proton spin.
dc.identifier.citationMeasurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized p plus p collisions at root s=510 GeV / Acharya, U [et al.] // Physical Review D. - 2020. - 102. - № 3. - 10.1103/PhysRevD.102.032001
dc.identifier.doi10.1103/PhysRevD.102.032001
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevD.102.032001
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85090273815&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000555774600001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22198
dc.relation.ispartofPhysical Review D
dc.titleMeasurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized p plus p collisions at root s=510 GeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume102
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