New Potential of Black Holes : Quest for TeV-Scale Physics by Measuring Top Quark Sector using Black Holes
arXiv:hep-ph/0205199
Abstract
If TeV-scale gravity models are correct, the production of black holes will be the first signal of new physics. Once black holes are produced, they will give us much information about TeV-scale new physics directly. But such black holes can also be used for the precision measurements of the Standard Model (SM). The SM is nothing but a theory which can describe weak-scale, and TeV-scale physics will affect it. So if some experimental results which cannot be explained in the SM are found, they will be attributed to TeV-scale physics and we can obtain ``bottom-up'' type information about new physics. In this paper, we consider the precision measurements of the top sector at the LHC by using black holes. The stringent trigger conditions to confirm the black hole production vanish almost all of the QCD background, and we can examine the top quark emitted from black holes very precisely. The error of the top quark mass and the top Yukawa coupling are drastically reduced, leading to a very accurate test of the Higgs mechanism. We can directly measure the CKM matrix element |V_{ts}|, and we will understand the property of the CKM matrix and the origin of CP-violation deeply. The very precise measurements of such properties in the SM, enabled by black holes, can become treasures in the quest for TeV-scale physics because there exists a possibility that TeV-scale physics affects them and destroys the predictions of the SM. By combining the direct information of new physics obtained from black holes themselves and the indirect information obtained from the limitations of the SM, we will be able to identify TeV-scale physics correctly.
arXiv comment18 pages, 2 figures
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