新物理学、cosmic ray光谱拐点和$pp$截面测量
New physics, the cosmic ray spectrum knee, and $pp$ cross section measurements
摘要：
我们探讨了一种新的物理相互作用的可能性，可以提供一个解释膝盖以上$10^6$ GeV的宇宙射线谱。我们模型的新物理修改的总质子-质子截面与非相干项，允许丢失的能量以上的新物理的规模。我们添加的约束，新的物理学也必须与已公布的$pp$截面测量，使用宇宙射线观测，一个数量级以上的膝盖。我们发现，在膝盖以上的能量所需的截面的上升是激进的。截面的增加表明，在这样高的能量下处理黑盘极限中的散射过程可能更合适。在这种情况下，标准模型和新物理对总截面的贡献之间可能没有明确的分离。我们在这个极限中模拟了丢失的能量，并找到了一个很好的拟合西藏III宇宙线通量数据。我们评论在大型强子对撞机上测试宇宙线膝盖的新物理学建议。
英文摘要：
We explore the possibility that a new physics interaction can provide an explanation for the knee just above $10^6$ GeV in the cosmic ray spectrum. We model the new physics modifications to the total proton-proton cross section with an incoherent term that allows for missing energy above the scale of new physics. We add the constraint that the new physics must also be consistent with published $pp$ cross section measurements, using cosmic ray observations, an order of magnitude and more above the knee. We find that the rise in cross section required at energies above the knee is radical. The increase in cross section suggests that it may be more appropriate to treat the scattering process in the black disc limit at such high energies. In this case there may be no clean separation between the standard model and new physics contributions to the total cross section. We model the missing energy in this limit and find a good fit to the Tibet III cosmic ray flux data. We comment on testing the new physics proposal for the cosmic ray knee at the Large Hadron Collider.
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