Publication: Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at s =200 GeV
Дата
2021
Авторы
Abdallah, M. S.
Adam, J.
Adamczyk, L.
Adams, J. R.
Alekseev, I.
Brandin, A. V.
Khyzhniak, Y. V.
Kochenda, L.
Kravtsov, P.
Nigmatkulov, G.
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Аннотация
© 2021 authors. Published by the American Physical Society.We report high-precision measurements of the longitudinal double-spin asymmetry, ALL, for midrapidity inclusive jet and dijet production in polarized pp collisions at a center-of-mass energy of s=200 GeV. The new inclusive jet data are sensitive to the gluon helicity distribution, Δg(x,Q2), for gluon momentum fractions in the range from x≃0.05 to x≃0.5, while the new dijet data provide further constraints on the x dependence of Δg(x,Q2). The results are in good agreement with previous measurements at s=200 GeV and with recent theoretical evaluations of prior world data. Our new results have better precision and thus strengthen the evidence that Δg(x,Q2) is positive for x>0.05.
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Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at s =200 GeV / Abdallah, M.S. [et al.] // Physical Review D. - 2021. - 103. - № 9. - 10.1103/PhysRevD.103.L091103
URI
https://www.doi.org/10.1103/PhysRevD.103.L091103
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https://openrepository.mephi.ru/handle/123456789/25545
https://www.scopus.com/record/display.uri?eid=2-s2.0-85107373402&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000655872200014
https://openrepository.mephi.ru/handle/123456789/25545