Data-driven method of pile-up correction for the substructure of massive jets

被引：19
|
作者：
Alon, Raz [1 ]
Duchovni, Ehud [1 ]
Perez, Gilad [1 ]
Pranko, Aliaksandr P. [2 ]
Sinervo, Pekka K. [3 ]
机构：
[1] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel
[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[3] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada
来源：
PHYSICAL REVIEW D | 2011年 / 84卷 / 11期
基金：
加拿大自然科学与工程研究理事会; 以色列科学基金会; 欧盟第七框架计划;
关键词：
D O I：
10.1103/PhysRevD.84.114025
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We describe a method to measure and correct for the incoherent component of energy flow arising from multiple interactions from jet shape and substructure observables of massive jets. The correction is a function of the jet-shape variable of interest and not a universal property. Such a correction is expected to reduce biases in the corresponding distributions generated by the presence of multiple interactions and to improve measurement resolution. This data-driven technique is not subject to uncertainties coming from the use of theoretical calculations. Corrections are derived for jet mass, angularity, and planar flow, and are found to be in good agreement with data on massive jets observed by the CDF collaboration. Finally, we comment on the linkage with the concept of jet area and jet mass area.
引用
收藏
页数：7
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