DSpace at EWHA: Measurement of Direct-Photon Cross Section and Double-Helicity Asymmetry at s =510 GeV in p → + p → Collisions

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DC Field	Value	Language
dc.contributor.author	한인식	*
dc.date.accessioned	2023-07-27T16:31:03Z	-
dc.date.available	2023-07-27T16:31:03Z	-
dc.date.issued	2023	*
dc.identifier.issn	3190-9007	*
dc.identifier.other	OAK-33798	*
dc.identifier.uri	https://dspace.ewha.ac.kr/handle/2015.oak/265115	-
dc.description.abstract	We present measurements of the cross section and double-helicity asymmetry ALL of direct-photon production in p→+p→ collisions at s=510 GeV. The measurements have been performed at midrapidity (\|η\|<0.25) with the PHENIX detector at the Relativistic Heavy Ion Collider. At relativistic energies, direct photons are dominantly produced from the initial quark-gluon hard scattering and do not interact via the strong force at leading order. Therefore, at s=510 GeV, where leading-order-effects dominate, these measurements provide clean and direct access to the gluon helicity in the polarized proton in the gluon-momentum-fraction range 0.02<x<0.08, with direct sensitivity to the sign of the gluon contribution. © 2023 authors. Published by the American Physical Society.	*
dc.language	English	*
dc.publisher	American Physical Society	*
dc.title	Measurement of Direct-Photon Cross Section and Double-Helicity Asymmetry at s =510 GeV in p → + p → Collisions	*
dc.type	Article	*
dc.relation.issue	25	*
dc.relation.volume	130	*
dc.relation.index	SCIE	*
dc.relation.index	SCOPUS	*
dc.relation.journaltitle	Physical Review Letters	*
dc.identifier.doi	10.1103/PhysRevLett.130.251901	*
dc.identifier.wosid	WOS:001026290400006	*
dc.identifier.scopusid	2-s2.0-85164137210	*
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dc.contributor.scopusid	한인식(7201832280;57205469686;57192312712)	*
dc.date.modifydate	20240415134453	*