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Transverse single spin asymmetries of forward neutrons in p + p, p + Al, and p + Au collisions at √s.sub.NN./sub. = 200 GeV as a function of transverse and longitudinal momenta

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    0566944 - FZÚ 2023 RIV US eng J - Journal Article
    Acharya, U.A. - Aidala, C. - Akiba, Y. - Vrba, Václav … Total 309 authors
    Transverse single spin asymmetries of forward neutrons in p + p, p + Al, and p + Au collisions at √sNN = 200 GeV as a function of transverse and longitudinal momenta.
    Physical Review D. Roč. 105, č. 3 (2022), č. článku 032004. ISSN 2470-0010. E-ISSN 2470-0029
    Institutional support: RVO:68378271
    Keywords : longitudinal momentum * kinematics * correlation
    OECD category: Particles and field physics
    Impact factor: 5, year: 2022
    Method of publishing: Open access

    In 2015 the PHENIX collaboration at the Relativistic Heavy Ion Collider recorded p+p, p+Al, and p+Au collision data at center of mass energies of sNN=200  GeV with the proton beam(s) transversely polarized. At very forward rapidities η>6.8 relative to the polarized proton beam, neutrons were detected either inclusively or in (anti)correlation with detector activity related to hard collisions. The resulting single spin asymmetries, that were previously reported, have now been extracted as a function of the transverse momentum of the neutron as well as its longitudinal momentum fraction xF. The explicit kinematic dependence, combined with the correlation information allows for a closer look at the interplay of different mechanisms suggested to describe these asymmetries, such as hadronic interactions or electromagnetic interactions in ultraperipheral collisions, UPC.
    Permanent Link: https://hdl.handle.net/11104/0338212

     
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