Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at √s = 510 GeV

0558721 - ÚJF 2023 RIV US eng J - Journal Article
Abdallah, M. S. - Aboona, B. E. - Adam, J. - Adamczyk, L. - Bielčík, J. - Bielčíková, Jana - Federič, Pavol - Holub, P. - Chaloupka, P. - Kosarzewski, L. K. - Kramárik, L. - Líčeník, Robert - Ponimatkin, Georgij - Prozorova, V. - Robotková, Monika - Rusňák, Jan - Šimko, Miroslav - Šumbera, Michal - Truhlář, T. - Trzeciak, B. A. - Vaněk, Jan … Total 388 authors
Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at √s = 510 GeV.
Physical Review D. Roč. 105, č. 9 (2022), č. článku 092011. ISSN 2470-0010. E-ISSN 2470-0029
R&D Projects: GA MŠMT LTT18002
Research Infrastructure: BNL-CZ II - 90109
Institutional support: RVO:61389005
Keywords : STAR experiment * heavy ion collisions
OECD category: Nuclear physics
Impact factor: 5, year: 2022
Method of publishing: Open access
https://doi.org/10.1103/PhysRevD.105.092011

We report measurements of the longitudinal double-spin asymmetry, A(LL), for inclusive jet and dijet production in polarized proton-proton collisions at midrapidity and center-of-mass energy root s = 510 GeV, using the high luminosity data sample collected by the STAR experiment in 2013. These measurements complement and improve the precision of previous STAR measurements at the same center-of-mass energy that probe the polarized gluon distribution function at partonic momentum fraction 0.015 less than or similar to x less than or similar to 0.25. The dijet asymmetries are separated into four jet-pair topologies, which provide further constraints on the x dependence of the polarized gluon distribution function. These measurements are in agreement with previous STAR measurements and with predictions from current next-to-leading-order global analyses. They provide more precise data at low dijet invariant mass that will better constrain the shape of the polarized gluon distribution function of the proton.
Permanent Link: http://hdl.handle.net/11104/0332291