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arXiv 1909.13626hep-ex
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用8 TeV的$pp$数据测量与$W^\pm$玻色子有关的$J/ψ$产生

Measurement of $J/ψ$ production in association with a $W^\pm$ boson with $pp$ data at 8 TeV

ATLAS Collaboration

备注：
36 pages in total, author list starting page 20, 3 figures, 9 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2015-05
发表信息：
JHEP 01 (2020) 095
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摘要：

利用2012年在LHC上记录的ATLAS数据，测量了$J/ψ$横动量在8.5-150 GeV范围内，快度为$|y_{J/ψ}|<2.1$时，$J/ψ$介子与$W^\pm \rightarrow μν$和$J/ψ\rightarrow μ^+ μ^-$的$W^\pm$玻色子的关联产生.这些数据是在质子-质子质心能量为$\sqrt{s}$ = 8 TeV时获得的，对应于20.3 fb $^{-1}$的积分光度。提示$J/ψ$加上$W^{\pm}$横截面的包容性的$W^{\pm}$横截面的比率作为一个函数的$J/ψ$横动量的差分测量，并与理论预测使用不同的双部分子散射横截面进行比较。

英文摘要：

A measurement of the production of a prompt $J/ψ$ meson in association with a $W^\pm$ boson with $W^\pm \rightarrow μν$ and $J/ψ\rightarrow μ^+ μ^-$ is presented for $J/ψ$ transverse momenta in the range 8.5-150 GeV and rapidity $|y_{J/ψ}|<2.1$ using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of $\sqrt{s}$ = 8 TeV and correspond to an integrated luminosity of 20.3 fb$^{-1}$. The ratio of the prompt $J/ψ$ plus $W^{\pm}$ cross-section to the inclusive $W^{\pm}$ cross-section is presented as a differential measurement as a function of $J/ψ$ transverse momenta and compared with theoretical predictions using different double-parton-scattering cross-sections.

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