在sqrt（s）= 0.9和7时，在TeV下用ATLAS检测器测量的PP相互作用中的Kshort和λ产生
Kshort and Lambda production in pp interactions at sqrt(s) = 0.9 and 7 TeV measured with the ATLAS detector at the LHC
摘要：
用ATLAS探测器在LHC上采集的sqrt（s）= 0.9和7TeV的非弹性pp碰撞数据，研究了Kshort和Lambda强子的产生.观测到的横动量、快度和多重数的分布在定义良好的相空间区域内以一种与模型无关的方式被修正到强子水平。还测量了Lambda与Lambda重子产生比的分布。并与各种蒙特卡罗模拟模型进行了比较。虽然大多数这些模型同意在15%以内的Kshort分布的数据，发现大量的分歧与数据的横向动量的Lambda分布。
英文摘要：
The production of Kshort and Lambda hadrons is studied in inelastic pp collisions at sqrt(s) = 0.9 and 7 TeV collected with the ATLAS detector at the LHC using a minimum-bias trigger. The observed distributions of transverse momentum, rapidity, and multiplicity are corrected to hadron level in a model-independent way within well defined phase-space regions. The distribution of the production ratio of Lambdabar to Lambda baryons is also measured. The results are compared with various Monte Carlo simulation models. Although most of these models agree with data to within 15% in the Kshort distributions, substantial disagreements with data are found in the Lambda distributions of transverse momentum.
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