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arXiv 2406.01735hep-ph
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大型强子对撞机中质子单衍射解离的偶极子-凸起结构

Dip-Bump Structure in Proton's Single Diffractive Dissociation at the Large Hadron Collider

László Jenkovszky, Rainer Schicker, István Szanyi

AI总结:

本文扩展偶极子 Pomeron 模型至质子单衍射解离,预测了 LHC 能量下 $t$ 分布中的偶极子-凸起结构,并引入了与缺失质量相关的直接道 Regge 轨迹。

摘要:

通过将成功描述弹性核子-核子散射的偶极子 Pomeron (DP) 模型扩展至质子单衍射解离 (SD),我们预测在质子 SD 的四动量转移平方 ($t$) 分布中存在偶极子-凸起结构。在大型强子对撞机 (LHC) 能量下,预测单衍射解离的 $t$ 分布结构出现在 $t=-4$ GeV$^2$ 附近,范围为 3 GeV$^2$ $\lesssim|t|\lesssim$ 7 GeV$^2$。除了对 $s$(总能量平方)和 $t$(动量转移平方)的依赖外,我们还预测了对缺失质量的依赖。我们包含了最小集的 Regge 轨迹,即 Pomeron 和 Odderon,它们在 LHC 中是不可或缺的。进一步的推广,例如包含非主导 Regge 轨迹,是直接的。本模型包含两类 Regge 轨迹:一类与 $t$ 道交换相关(Pomeron、Odderon 和非主导(次级)reggeon),出现在小和中等 $-t$ 处,在此处它们是实数且近乎线性的;另一类是与缺失质量相关的直接道轨迹 $α(M^2)$。本文我们集中于 $t$ 中的结构,暂时忽略 $M^2$ 中的共振。

英文摘要:

By extending the dipole Pomeron (DP) model, successful in describing elastic nucleon-nucleon scattering, to proton single diffractive dissociation (SD), we predict a dip-bump structure in the squared four-momentum transfer ($t$) distribution of proton's SD. Structures in the $t$ distribution of single diffractive dissociation are predicted around $t=-4$ GeV$^2$ at LHC energies in the range of 3 GeV$^2$ $\lesssim|t|\lesssim$ 7 GeV$^2$. Apart from the dependence on $s$ (total energy squared) and $t$ (squared momentum transfer), we predict also a dependence on missing masses. We include the minimum set of Regge trajectories, namely the Pomeron and the Odderon, indispensable at the LHC. Further generalization, e.g., by the inclusion of non-leading Regge trajectories, is straightforward. The present model contains two types of Regge trajectories: those connected with $t$-channel exchanges (the Pomeron, the Odderon, and non-leading (secondary) reggeons) appearing at small and moderate $-t$, where they are real and nearly linear, as well as direct-channel trajectories $α(M^2)$ related to missing masses. In this paper, we concentrate on structures in $t$ neglecting (for the time being) resonances in $M^2$.

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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