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arXiv 1808.02501hep-phnucl-th
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从大Bjorken x上的专有DIS中提取质子中的多体色荷关联函数

Extracting many-body color charge correlators in the proton from exclusive DIS at large Bjorken x

Adrian Dumitru, Gerald A. Miller, Raju Venugopalan

摘要:

我们构造了一个计算质子中多体色荷关联函数的一般QCD光阵面形式。这些形状因子可以从排他的最终状态的深度非弹性散射测量中提取,类似于在弹性电子散射实验中提取的电磁形状因子。特别值得注意的是潜在的提取一个新的奥尔德龙形状因子,无论是间接从独家$J/Ψ$测量,或直接从独家测量的$η_c$或张量介子在大比约肯x。除了这些色荷关联函数在大x下亚飞秒尺度的时空层析成像上传达的内在信息之外,相应的累积量将McLerran-Venugopalan型权重泛函的有效性域从小x和大核扩展到大$x$下的核子和轻核,以及非零动量转移。这可能会显着减少非微扰系统的不确定性在小$x$的QCD演化方程的初始条件,并可能是目前和未来的对撞机实验的现象学强相关。

英文摘要:

We construct a general QCD light front formalism to compute many-body color charge correlators in the proton. These form factors can be extracted from deeply inelastic scattering measurements of exclusive final states in analogy to electromagnetic form factors extracted in elastic electron scattering experiments. Particularly noteworthy is the potential to extract a novel Odderon form factor, either indirectly from exclusive $J/Ψ$ measurements, or directly from exclusive measurements of the $η_c$ or tensor mesons at large Bjorken x. Besides the intrinsic information conveyed by these color charge correlators on the spatio-temporal tomography at the sub-femtoscopic scale at large x, the corresponding cumulants extend the domain of validity of McLerran-Venugopalan type weight functionals from small x and large nuclei to nucleons and light nuclei at large $x$, as well as to non-zero momentum transfer. This may significantly reduce nonperturbative systematic uncertainties in the initial conditions for QCD evolution equations at small $x$ and could be of strong relevance for the phenomenology of present and future collider experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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