About: I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

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About: I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV mu(+) beam and a transversely polarised NH3 target. The Collins asymmetry of the proton was extracted in the Bjorken x range 0.003 < x < 0.7. These new precise measurements confirm previous measurements from the COMPASS and HERMES Collaborations, which exhibit a definite effect in the valence quark region. The asymmetries for negative and positive hadrons are similar in magnitude and opposite in sign. They are compatible with model calculations in which the u-quark transversity is opposite in sign and somewhat larger than the d-quark transversity distribution function. The asymmetry is extracted as a function of Bjorken x, the relative hadron energy z and the hadron transverse momentum p(T)(h). The high statistics and quality of the data also allow for more detailed investigations of the dependence on the kinematic variables. These studies confirm the leading-twist nature of the Collins asymmetry. The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV mu(+) beam and a transversely polarised NH3 target. The Collins asymmetry of the proton was extracted in the Bjorken x range 0.003 < x < 0.7. These new precise measurements confirm previous measurements from the COMPASS and HERMES Collaborations, which exhibit a definite effect in the valence quark region. The asymmetries for negative and positive hadrons are similar in magnitude and opposite in sign. They are compatible with model calculations in which the u-quark transversity is opposite in sign and somewhat larger than the d-quark transversity distribution function. The asymmetry is extracted as a function of Bjorken x, the relative hadron energy z and the hadron transverse momentum p(T)(h). The high statistics and quality of the data also allow for more detailed investigations of the dependence on the kinematic variables. These studies confirm the leading-twist nature of the Collins asymmetry. (en)
Title	I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries (en)
skos:prefLabel	I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries (en)
skos:notation	RIV/46747885:24220/12:#0002486!RIV14-MSM-24220___
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(7E12066), P(LA08015), S
http://linked.open...iv/cisloPeriodika	4-5
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	140157
http://linked.open...ai/riv/idVysledku	RIV/46747885:24220/12:#0002486
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sivers asymnmetries; distributions (en)
http://linked.open.../riv/klicoveSlovo	distributions sivers asymnmetries
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[C4EF51695564]
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	220 (xsd:int)
http://linked.open...vavai/riv/projekt	Study of Strongly Interacting Matter Collaboration of the Czech Republic with CERN
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	7
http://linked.open...iv/tvurceVysledku	Polák, Jaroslav Steiger, Lukáš
http://linked.open...ain/vavai/riv/wos	000310863300011
issn	0370-2693
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.physletb.2012.09.055
http://localhost/t...ganizacniJednotka	24220

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