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arXiv 1109.6744hep-ex
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用ALICE测量$\sqrt{s} =$ 0.9和7 TeV质子-质子碰撞中的$π$,K,p横动量谱

Measurement of $π$, K, p transverse momentum spectra with ALICE in proton-proton collisions at $\sqrt{s} =$ 0.9 and 7 TeV

Marek Chojnacki

摘要:

本文给出了在$\sqrt{s} = 7$ TeV质子-质子碰撞中,中快度下的$π$,K,p横动量($p_{\mathrm{t}}$)谱的测量结果。使用内部跟踪系统(ITS)和时间投影室(TPC)中的能量损失信号进行粒子识别,而来自飞行时间(TOF)检测器的信息用于识别较高横向动量的粒子。从在$\sqrt{s} = 7$ TeV的平均横向动量($<p_{\mathrm{t}}>$)和粒子比的光谱提取和比较,在$\sqrt{s} = 0.9$ TeV和更低的能量碰撞得到的结果。

英文摘要:

Results of the measurement of the $π$, K, p transverse momentum ($p_{\mathrm{t}}$) spectra at mid-rapidity in proton-proton collisions at $\sqrt{s} = 7$ TeV are presented. Particle identification was performed using the energy loss signal in the Inner Tracking System (ITS) and the Time Projection Chamber (TPC), while information from the Time-of-Flight (TOF) detector was used to identify particles at higher transverse momentum. From the spectra at $\sqrt{s} = 7$ TeV the mean transverse momentum ($<p_{\mathrm{t}}>$) and particle ratios were extracted and compared to results obtained for collisions at $\sqrt{s} = 0.9$ TeV and lower energies.

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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