Calibration of the CMS hadron calorimeters using proton-proton collision data at v s = 13 TeV

Calibration of the CMS hadron calorimeters using proton-proton collision data at v s = 13 TeV
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使用 v s = 13 TeV 处的质子-质子碰撞数据校准 CMS 强子热量计

DOI:
10.1088/1748-0221/15/05/p05002
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发表时间:
2020
影响因子:
1.3
通讯作者:
Sirunyan A
Sirunyan A
中科院分区:
工程技术4区
文献类型:
--
作者:
Sirunyan A

文献摘要

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利用质子-质子(pp)碰撞的标准模型(SM)的大多数精确研究依赖于可靠,精确的测量射流和丢失的横向动量。其中的不确定性通常与强子能量测量的能量标度和分辨率有关。例如,顶夸克质量的精确测量需要对喷流的能量尺度和分辨率有详细的了解;在CMS最近对顶夸克质量的测量中,两个通道中最大的实验不确定性来源是喷流能量尺度。超越SM的物理学研究(例如,基于对通过初始态辐射产生的喷流的测量来搜索暗物质[3])通常依赖于对强子性质的测量。本文对强子量能器的标定方法进行了研究,并通过多次实验加以改进。参考文献中报道了CMS和ATLAS合作组织关于量热计校准的先前出版物。[4-9]。强子量能器(HCAL)[10,11]由四个主要的子探测器组成:强子桶(HB)[12],强子端盖(HE)[10],强子
Most precision studies of the standard model (SM) utilizing proton-proton (pp) collisions depend on reliable, precise measurements of jets and missing transverse momentum. The uncertainties in these are often related to the energy scale and the resolution of the measurement of hadron energy. For example, a precision measurement of the mass of the top quark requires a detailed understanding of the energy scale and resolution of jets; in a recent measurement of the top quark mass by CMS [1, 2], the single largest source of experimental uncertainty in two of the channels used was the jet energy scale. Searches for physics beyond the SM (eg, searches for dark matter based on measurements of jets produced through initial-state radiation [3]) often rely on measurements of hadron properties. The methods used to calibrate hadron calorimeters have been studied and improved by several experiments. Previous publications from the CMS and ATLAS Collaborations on calorimeter calibration are reported in refs.[4–9]. The hadron calorimeter (HCAL)[10, 11] is composed of four major subdetectors: the hadron barrel (HB)[12], the hadron endcap (HE)[10], the hadron