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Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in p+Pb collisions
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Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in p+Pb collisions

G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, K. Abeling, N. J. Abicht, S. H. Abidi, M. Aboelela, A. Aboulhorma, H. Abramowicz, …
Physics letters. B, 卷.877, 140440
01/06/2026
Web of Science ID: WOS:001780841800001

摘要

Color fluctuations Dijet Event geometry estimators Heavy ion collisions Nuclear breakup
This Letter analyzes the sensitivity of event geometry estimators to the initial-state kinematics of hard scattering in proton–lead collisions. This analysis uses dijets as a proxy for the parton–parton scattering configuration, correlating it with event geometry estimators, namely the energy deposited in the Zero-Degree Calorimeter and the transverse energy recorded in the Forward Calorimeter in the Pb-going direction. The analysis uses data recorded by the ATLAS detector at the Large Hadron Collider with a nucleon–nucleon center-of-mass energy of 8.16 TeV, corresponding to an integrated luminosity of 56 nb . The jets are measured within the pseudorapidity interval −2.8 ' η ' 4.5, where positive η values correspond to the direction of the proton beam. Results are presented as a function of the Bjorken- x of the parton originating from the proton, x . Both event geometry estimators are found to be dependent on x , with the energy deposited in the Zero-Degree Calorimeter about six times less sensitive to x compared with the transverse energy deposited in the Forward Calorimeter.

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https://doi.org/10.1016/j.physletb.2026.140440檢視
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國際合作
引用書目主題
5 Physics
5.9 Particles & Fields
5.9.428 Heavy Ion Collisions
Web Of Science研究領域
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
ESI研究領域
Physics

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