About: Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering

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About: Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Double-spin asymmetries for production of charged pions and kaons in semi-inclusive deep-inelastic muon scattering have been measured by the COMPASS experiment at CERN. The data, obtained by scattering a 160 GeV muon beam off a longitudinally polarised NH3 target, cover a range of the Bjorken variable x between 0.004 and 0.7. A leading order evaluation of the helicity distributions for the three lightest quarks and antiquark flavours derived from these asymmetries and from our previous deuteron data is presented. The resulting values of the sea quark distributions are small and do not show any sizable dependence on x in the range of the measurements. No significant difference is observed between the strange and antistrange helicity distributions, both compatible with zero. The integrated value of the flavour asymmetry of the helicity distribution of the light-quark sea, is found to be slightly positive, about 1.5 standard deviations away from zero. Double-spin asymmetries for production of charged pions and kaons in semi-inclusive deep-inelastic muon scattering have been measured by the COMPASS experiment at CERN. The data, obtained by scattering a 160 GeV muon beam off a longitudinally polarised NH3 target, cover a range of the Bjorken variable x between 0.004 and 0.7. A leading order evaluation of the helicity distributions for the three lightest quarks and antiquark flavours derived from these asymmetries and from our previous deuteron data is presented. The resulting values of the sea quark distributions are small and do not show any sizable dependence on x in the range of the measurements. No significant difference is observed between the strange and antistrange helicity distributions, both compatible with zero. The integrated value of the flavour asymmetry of the helicity distribution of the light-quark sea, is found to be slightly positive, about 1.5 standard deviations away from zero. (en)
Title	Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering (en)
skos:prefLabel	Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering (en)
skos:notation	RIV/46747885:24220/10:#0002490!RIV14-MSM-24220___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(LA08015), P(ME 492), S, Z(AV0Z20650511)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Polák, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Technická univerzita v Liberci / Fakulta mechatroniky, informatiky a mezioborových studií
http://linked.open...dnocenehoVysledku	283658
http://linked.open...ai/riv/idVysledku	RIV/46747885:24220/10:#0002490
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	semi-inclusive deep inelastic scattering; structure function; parton distribution functions (en)
http://linked.open.../riv/klicoveSlovo	parton distribution functions structure function semi-inclusive deep inelastic scattering
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[D696B5A23D40]
http://linked.open...i/riv/nazevZdroje	Physics Letters. B
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	218 (xsd:int)
http://linked.open...vavai/riv/projekt	http://linked.opendata.cz/resource/domain/vavai/projekt/ME%20492 Collaboration of the Czech Republic with CERN
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	693
http://linked.open...iv/tvurceVysledku	Polák, Jaroslav
http://linked.open...ain/vavai/riv/wos	000283211800005
http://linked.open...n/vavai/riv/zamer	Research into experimental methods for examination of the physical properties of matter and their application in advanced technologies
issn	0370-2693
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.physletb.2010.08.034
http://localhost/t...ganizacniJednotka	24220

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