Journal
NUCLEAR PHYSICS A
Volume 1018, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysa.2021.122358
Keywords
Quantum chromodynamics; Small x; Color glass condensate; Coherent energy loss; Dihadron correlations; Away-side peak suppression
Categories
Funding
- DOE Office of Nuclear Physics [DE-SC0002307]
- PSC-CUNY [63158-0051]
- U.S. Department of Energy (DOE) [DE-SC0002307] Funding Source: U.S. Department of Energy (DOE)
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This study investigates the role of coherent, medium-induced energy loss in azimuthal angular correlations in dihadron production in Deep Inelastic Scattering (DIS) at small x. The research shows that radiative cold-matter energy loss has a significant effect on the coincidence probability for the back to back production of dihadrons in DIS, and the double ratio of coincidence probabilities for nucleus and proton targets is robust against higher order radiative corrections.
We perform an exploratory study of the role of coherent, medium-induced energy loss in azimuthal angular correlations in dihadron production in Deep Inelastic Scattering (DIS) at small x where the target proton/nucleus is modeled as a Color Glass Condensate. In this approach coherent radiative energy loss is part of the higher order corrections to the leading order dihadron production cross section. We include the effects of both gluon saturation and coherent radiative energy loss and show that radiative cold-matter energy loss has a significant effect on the so-called coincidence probability for the back to back production of dihadrons in DIS. We also define a double ratio of coincidence probabilities for a nucleus and proton targets and show that it is very robust against higher order radiative corrections. (c) 2021 Elsevier B.V. All rights reserved.
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