arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1607.02099hep-phastro-ph.HE
收藏

光子扇区中各向同性洛伦兹破坏引起的广泛空气簇射的变化

Changes in extensive air showers from isotropic Lorentz violation in the photon sector

J. S. Diaz, F. R. Klinkhamer, M. Risse

摘要:

我们考虑一个理论与各向同性的非双折射洛伦兹破坏的光子部门,并探讨在地球大气中广泛的空气簇射的电磁分量的发展的影响。具体地说,我们考虑的情况下,一个“快”光子的相速度大于一个大质量狄拉克费米子的最大可达到的速度(这种情况下对应于一个负的洛伦兹破坏参数$κ$的行动)。具有高于阈值能量的簇射光子迅速衰减成电子-正电子对,而不是通过在原子核的背景场中的电子-正电子对的常规产生而衰减。这种带电轻子的快速产生加速了簇射的发展,使簇射最大值($X_\text{max}$)的大气深度降低了一个宇宙射线观测站可以测量到的量。对$X_\text{max}$的精确测量可以将负洛伦兹破坏参数$κ$的现有限制提高几个数量级。

英文摘要:

We consider a theory with isotropic nonbirefringent Lorentz violation in the photon sector and explore the effects on the development of the electromagnetic component of extensive air showers in the Earth atmosphere. Specifically, we consider the case of a "fast" photon with a phase velocity larger than the maximum attainable velocity of a massive Dirac fermion (this case corresponds to a negative Lorentz-violating parameter $κ$ in the action). Shower photons with above-threshold energies decay promptly into electron-positron pairs, instead of decaying by the conventional production of electron-positron pairs in the background fields of atomic nuclei. This rapid production of charged leptons accelerates the shower development, decreasing the atmospheric depth of the shower maximum ($X_\text{max}$) by an amount which could be measured by cosmic-ray observatories. Precise measurements of $X_\text{max}$ could then improve existing limits on the negative Lorentz-violating parameter $κ$ by several orders of magnitude.

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。

↑