https://doi.org/10.1140/epja/i2016-16354-0
Regular Article - Theoretical Physics
Scaling of nuclear modification factors for hadrons and light nuclei
1
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China
2
University of Chinese Academy of Sciences, 100049, Beijing, China
3
ShanghaiTech University, 200031, Shanghai, China
* e-mail: ygma@sinap.ac.cn
Received:
1
June
2016
Accepted:
11
November
2016
Published online:
2
December
2016
The number of constituent quarks (NCQ) scaling for hadrons and the number of constituent nucleons (NCN) scaling for light nuclei are proposed for nuclear modification factors (
) of hadrons and light nuclei, respectively, according to the experimental investigations in relativistic heavy-ion collisions. Based on the coalescence mechanism the scalings are performed for pions and protons at the quark level, and for light nuclei 
and 3He at the nucleonic level, respectively, formed in Au+Au and Pb+Pb collisions, and a nice scaling behaviour emerges. The NCQ or NCN scaling law of can be, respectively, taken as a probe for the quark or nucleon coalescence mechanism for the formation of hadron or light nuclei in relativistic heavy-ion collisions.
© SIF, Springer-Verlag Berlin Heidelberg, 2016
