未来在LHCb用SMOG2计划测量D和b介子对确定核部分子分布函数的影响

IF 4.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-05-12 DOI:10.1016/j.physletb.2025.139554

Carlo Flore , Cynthia Hadjidakis , Daniel Kikoła , Aleksander Kusina , Anton Safronov

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引用次数: 0

摘要

我们分析了在LHCb实验中SMOG2固定目标程序中未来D-和b介子测量对核部分子分布函数的潜在影响。在[1]之后，我们假设SMOG2将收集五个核目标的数据：He， Ne, Ar, Kr， Xe和氢，这将为构建核比率提供基线。采用PDF重加权法进行分析。我们证明，这样的测量将允许大大减少目前核胶子分布的不确定性，在某种程度上，甚至轻海夸克分布的不确定性。此外，它将首次提供系统地研究目前关于核部分子分布a依赖性的假设的可能性。

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The impact of future D- and B-meson measurements with the SMOG2 program at LHCb on the determination of nuclear parton distribution functions

We perform an analysis of the potential impact of future D- and B-meson measurement within the SMOG2 fixed-target program at the LHCb experiment on nuclear parton distribution functions. Following [1], we assume that SMOG2 will collect data for five nuclear targets: He, Ne, Ar, Kr, Xe and hydrogen which will provide a baseline for constructing nuclear ratios. The analysis is performed by using the PDF reweighting method. We demonstrate that such a measurement will allow to considerably reduce the current uncertainties of the nuclear gluon distribution and, to some extent, even the uncertainties of the light sea-quark distributions. Furthermore, it will provide the first possibility to systematically study the current assumptions on the A-dependence of the nuclear parton distributions.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.