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arXiv 1111.7080hep-exnucl-ex
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在LHC上用ALICE探测器探测pp和Pb-Pb碰撞中的识别粒子产生和谱

Identified-particle production and spectra with the ALICE detector in pp and Pb-Pb collisions at the LHC

Roberto Preghenella

摘要:

由于其独特的能力,ALICE实验可以测量在LHC的pp和Pb-Pb碰撞中在很宽的动量范围内确定的粒子和共振的产生。在这份报告中,粒子识别探测器和技术,以及实现的性能,进行了简短的审查。给出了在$\sqrt{s}$ = 0.9TeV和7 TeV的pp碰撞和在$\sqrt{s_{\rm NN}}$ = 2.76TeV的Pb-Pb碰撞中强子横动量谱的测量结果。特别是,质子质子的粒子生产产量,光谱形状和粒子比的结果作为碰撞能量的函数,并与以前的实验和常用的蒙特卡罗模型。粒子光谱,产率和比例在铅铅测量作为碰撞中心的函数,并将结果与发表的RHIC数据在金-金碰撞在$\sqrt{s_{\rm NN}}$ = 0.2 TeV和预测的LHC。

英文摘要:

Thanks to its unique capabilities the ALICE experiment can measure the production of identified particles and resonances over a wide momentum range both in pp and Pb-Pb collisions at the LHC. In this report, particle-identification detectors and techniques, as well as achieved performance, are shortly reviewed. The current results on hadron transverse momentum spectra measured in pp collisions at $\sqrt{s}$ = 0.9 TeV and 7 TeV, and in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV are shown. In particular, proton-proton results on particle production yields, spectral shapes and particle ratios are presented as a function of the collision energy and compared to previous experiments and commonly-used Monte Carlo models. Particle spectra, yields and ratios in Pb-Pb are measured as a function of the collision centrality and the results are compared with published RHIC data in Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 0.2 TeV and predictions for the LHC.

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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