强耦合及其运行的测定

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

Physics Letters B Pub Date : 2025-06-11 DOI:10.1016/j.physletb.2025.139651

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引用次数: 0

摘要

在量子色动力学中，强耦合αS的值是在次至次至领先级精度的综合分析中确定的。该分析使用了欧洲核子研究中心（CERN）大型强子对撞机（LHC）的CMS合作项目对质心能量为2.76、7、8和13 TeV的质子-质子碰撞中产生的包容性射流的双微分截面测量结果，并结合了来自HERA的包容性深度非弹性数据。在Z玻色子质量尺度上得到αS(mZ)=0.1176−0.0016+0.0014。利用射流横向动量的不同间隔测量，探测了αS在100 ~ 1600 GeV之间的运行情况。

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Determination of the strong coupling and its running from measurements of inclusive jet production

The value of the strong coupling

α_{S}

is determined in a comprehensive analysis at next-to-next-to-leading order accuracy in quantum chromodynamics. The analysis uses double-differential cross section measurements from the CMS Collaboration at the CERN LHC of inclusive jet production in proton-proton collisions at centre-of-mass energies of 2.76, 7, 8, and 13 TeV, combined with inclusive deep-inelastic data from HERA. The value

α_{S} (m_{Z}) = 0.1176_{- 0.0016}^{+ 0.0014}

is obtained at the scale of the Z boson mass. By using the measurements in different intervals of jet transverse momentum, the running of

α_{S}

is probed for energies between 100 and 1600 GeV.

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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.