arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0810.2383nucl-ex
收藏

用ALICE探测器研究p-p碰撞中的共振

Perspective for resonances in p-p collisions with the ALICE detector

A. Badala, G. S. Pappalardo, R. Vernet, F. Blanco, P. La Rocca, C. Petta, A. Pulvirenti, F. Riggi

摘要:

研究了ALICE探测器从LHC p-p计划启动之初重建短寿命共振的能力,考虑到在900 GeV和10 TeV的约300,000个最小偏置p-p PYTHIA事件,在仍然未对准的探测器的假设下完全重建。该方法只考虑了航迹重构的信息,没有考虑PID的知识。在900 GeV的事件中,可靠的ρ(770)产额估计是可能的。此外,在10 TeV的300,000 p-p事件中,可以提取φ共振的信号。如果只考虑横向动量大于1.5 GeV/c的共振,则可以达到9的显著性。此外,即使具有这种低统计,phi信号在具有高达100的多重性的事件中也是可见的。

英文摘要:

The capability of the ALICE detector to reconstruct short-lived resonances from the very beginning of the LHC p-p program start-up was investigated, considering about 300,000 minimum bias p-p PYTHIA events at 900 GeV and 10 TeV, fully reconstructed under the hypothesis of a still misaligned detector. Only the information from track reconstruction was taken into account and no PID knowledge was considered. A reliable rho(770) yield estimation was possible in 900 GeV events. Moreover, in 300,000 p-p events at 10 TeV the signal for the phi-resonance could be extracted. A significance of 9 can be reached if only resonances with a transverse momentum larger than 1.5 GeV/c are considered. Moreover, even with this low statistics the phi signal is visible in events with a multiplicity as high as 100.

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。

↑