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arXiv 0907.4457nucl-exhep-ex
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用PHENIX实验测量$\sqrt{s_{NN}}=$ 200 GeV的d+Au碰撞中的$π^{0}$和$γ$

Measurement of $π^{0}$ and $γ$ in d+Au collisions at $\sqrt{s_{NN}}=$ 200 GeV by PHENIX experiment

Ondrej Chvala

摘要:

先前的结果表明,高$p_T$颗粒抑制金+金相互作用是一个最终状态的效果,因为R $_{dA}$的比例是兼容的统一,虽然在大的实验误差。由于可能涉及到结构函数的修正,因此对这一结论进行更高精度的检验是很重要的。2008年的d+Au数据与2003年的数据相比,积分亮度提高了约30倍。在更高的$p_T$下对$π^0$和$γ$进行更精确的测量,将为重核的初始态是否被修改提供新的线索。

英文摘要:

Previous results indicated that high $p_T$ particle suppression in Au+Au interactions is a final state effect, since R$_{dA}$ ratios were compatible with unity, albeit within large experimental errors. It is important to test this conclusion to higher precision since the modification of structure functions may be involved. Recent d+Au data taken in 2008 improve the integrated luminosity by about a factor of thirty compared to the 2003 data. A more precise measurement of both $π^0$ and $γ$ at higher $p_T$ will shed new light on whether the initial state in the heavy nuclei is modified.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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