ATLAS measured the centrality dependence of the dijet yield using 165     nb − 1 of p + Pb data collected at √ s NN = 8.16     TeV in 2016. The event centrality, which reflects the p + Pb impact parameter, is characterized by the total transverse energy registered in the Pb-going side of the forward calorimeter. The central-to-peripheral ratio of the scaled dijet yields, R CP , is evaluated, and the results are presented as a function of variables that reflect the kinematics of the initial hard parton scattering process. The R CP shows a scaling with the Bjorken x of the parton originating from the proton, x p , while no such trend is observed as a function of x Pb . This analysis provides unique input to understanding the role of small proton spatial configurations in p + Pb collisions by covering parton momentum fractions from the valence region down to x p ∼ 10 − 3 and x Pb ∼ 4 × 10 − 4 .

Aad, G., Abbott, B., Abeling, K., Abicht, N. ., Abidi, S. ., Aboulhorma, A., et al. (2024). Measurement of the Centrality Dependence of the Dijet Yield in p+Pb Collisions at sNN=8.16  TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 132(10) [10.1103/PhysRevLett.132.102301].

Measurement of the Centrality Dependence of the Dijet Yield in p+Pb Collisions at sNN=8.16  TeV with the ATLAS Detector

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Di Ciaccio, A.;
2024-01-01

Abstract

ATLAS measured the centrality dependence of the dijet yield using 165     nb − 1 of p + Pb data collected at √ s NN = 8.16     TeV in 2016. The event centrality, which reflects the p + Pb impact parameter, is characterized by the total transverse energy registered in the Pb-going side of the forward calorimeter. The central-to-peripheral ratio of the scaled dijet yields, R CP , is evaluated, and the results are presented as a function of variables that reflect the kinematics of the initial hard parton scattering process. The R CP shows a scaling with the Bjorken x of the parton originating from the proton, x p , while no such trend is observed as a function of x Pb . This analysis provides unique input to understanding the role of small proton spatial configurations in p + Pb collisions by covering parton momentum fractions from the valence region down to x p ∼ 10 − 3 and x Pb ∼ 4 × 10 − 4 .
2024
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Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01
English
Con Impact Factor ISI
Aad, G., Abbott, B., Abeling, K., Abicht, N. ., Abidi, S. ., Aboulhorma, A., et al. (2024). Measurement of the Centrality Dependence of the Dijet Yield in p+Pb Collisions at sNN=8.16  TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 132(10) [10.1103/PhysRevLett.132.102301].
Aad, G; Abbott, B; Abeling, K; Abicht, N ; Abidi, S ; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, B ; Adam Bourdarios, C; Adamczyk, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/356205
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