2020/03/31 by B. G. Zakharov · 5 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Large Hadron Collider #Particle physics theoretical and experimental studies #Parton #Plasma #Quantum Chromodynamics and Particle Interactions #Radiative transfer #hep-ph #nucl-th
paper · pdf · doi:10.1140/epjc/s10052-021-08847-w
published in The European Physical Journal C 81(1) (Springer Science+Business Media) · 11 pages, 1 figure. Accepted in Eur.Phys.J. C
openalex created_date 2020/03/27 · openalex publication_date 2021/01/01 · arxiv created 2021/01/12 · arxiv updated 2021/02/03 · openalex updated_date 2026/08/05
Abstract We study contribution of radiative processes to p⊥ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>p</mml:mi> <mml:mo>⊥</mml:mo> </mml:msub> </mml:math> -broadening of fast partons in an expanding quark–gluon plasma. It is shown that the radiative correction to ⟨ p⊥ 2⟩ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>⟨</mml:mo> <mml:msubsup> <mml:mi>p</mml:mi> <mml:mrow> <mml:mo>⊥</mml:mo> </mml:mrow> <mml:mn>2</mml:mn> </mml:msubsup> <mml:mo>⟩</mml:mo> </mml:mrow> </mml:math> for the QGP produced in AA -collisions at RHIC and LHC may be negative, and comparable in absolute value with the non-radiative contribution. We have found that the QGP expansion enhances the radiative suppression of p_⊥ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>p</mml:mi> <mml:mo>⊥</mml:mo> </mml:msub> </mml:math> -broadening as compared to the static medium.