Low-mass vector meson production at forward rapidity in p+p and d+Au collisions at $$\sqrt{s_{\rm NN}}$$ s NN = 200 GeV from a multiphase transport model

Autor: Song Zhang, Yu-Gang Ma, Yi-Fei Xu, Jing-Han Chen, C. Zhong, Yong-jin Ye
Rok vydání: 2016
Předmět:
Zdroj: Nuclear Science and Techniques. 27
ISSN: 2210-3147
1001-8042
DOI: 10.1007/s41365-016-0093-7
Popis: Low-mass vector meson ( $$\rho , \omega $$ , and $$\phi $$ ) production at forward rapidity in p+p and d+Au collisions at $$\sqrt{s_{{\rm NN}}}$$ = 200 GeV is studied within the framework of a multiphase transport model (AMPT). Detailed investigations, including the transverse momentum and the rapidity dependence of low-mass vector meson production in the AMPT model, show that the hadron interaction process is important for a quantitative description of the $$\rho $$ and $$\omega $$ data. But for the $$\phi $$ meson, the strange quark production in the AMPT model with the string melting scenario describes the data reasonably well, while the default AMPT model under-predicts the data. The $${\rm N}(\phi )/{\rm N} (\rho + \omega )$$ ratio from the AMPT model with the string melting scenario perfectly describes the data in p+p collisions. For the d+Au collisions, an increased trend of this ratio vs. transverse momentum and the number of participants are observed from the AMPT model. Our results indicate that a precise measurement of the $${\rm N}(\phi )/ {\rm N} (\rho + \omega )$$ ratio in d+Au and Au+Au collisions will shed more light on the strangeness production and its dynamics in quark–gluon plasma.
Databáze: OpenAIRE
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