https://doi.org/10.1140/epjp/s13360-023-04303-8
Regular Article
Hadronization effects on transverse momentum dependent jet fragmentation function in small systems
1
Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, 200433, Shanghai, China
2
Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, 200438, Shanghai, China
3
Department of Physics and Astronomy, Wayne State University, 48201, Detroit, MI, USA
Received:
19
September
2022
Accepted:
16
July
2023
Published online:
31
July
2023
The transverse momentum 
-dependent jet fragmentation functions have been investigated in proton+proton (p 
p) and proton+lead (p Pb) collisions at 
with a multiphase transport model containing both a simple quark coalescence mechanism and a new hybrid hadronization mechanism with coalescence and fragmentation processes. Hadronized by the new hadronization mechanism, the AMPT model achieves a quantitative description of the -dependent jet fragmentation functions measured by ALICE. Besides, no obvious jet-medium interaction and cold nuclear matter effects on the -dependent jet fragmentation functions in p Pb collisions were observed. We found the -dependent jet fragmentation functions are dominated by the quark coalescence contribution for the new hadronization mechanism, which can be decomposed into narrow and wide parts. The root mean square value of the wide part depends on the jet radius R and jet transverse momentum 
, which is sensitive to different hadronization mechanisms and their components. Therefore, the -dependent jet fragmentation functions are proposed as a sensitive probe to study the non-perturbative hadronization effect of jets in small colliding systems.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
