Электронный каталог

Статья

Aboona, B.E.
Measurement of Transverse Single-Spin Asymmetries for Dijet Production in Polarized Proton-Proton Collisions at *%s=200 GeV / B.E.Aboona, G.Agakishiev, A.Aitbayev, A.Aparin, G.S.Averichev, T.G.Dedovich, A.Kechechyan, A.A.Korobitsin, R.Lednicky, V.B.Luong, E.Nedorezov, Y.Panebratsev, O.V.Rogachevsky, E.Shahaliev, A.Timofeev, M.V.Tokarev, S.Vokal, [a.o.]. – Title : electronic // Physical Review D. – 2026. – Vol. 114, No. 1. – P. L011504. – URL: https://doi.org/10.1103/dd1f-hvj2. – Bibliogr.: 62.

We report a new measurement of transverse single-spin asymmetries for dijet production in collisions of polarized protons at *s= 200 GeV. Correlations between the proton spin and the transverse momenta of its partons, each perpendicular to the proton momentum direction, are probed at high Q&sub(2) ≈ 160 GeV*2. Evidence for nonzero Sivers effects is measured for the first time in dijets from proton-proton collisions, but only when the jets are sorted by their net charge, which enhances the otherwise canceling opposite-sign u- or d-quark contributions to separate data samples. The resulting asymmetries are compared to recent theoretical calculations. Separately, the associated Sivers observable < k&sub(T) >, the average parton transverse momentum, is extracted using a simple kinematics approach which further enables a determination of the individual partonic contributions to the observed asymmetries.



ОИЯИ = ОИЯИ (JINR)2026
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Бюллетени = 41/026