Abstract
In the Randall-Sundrum model, we study top-antitop pair production and top spin correlations at the Large Hadron Collider. In addition to the standard model processes, there is a new contribution to the top-antitop pair production process mediated by graviton Kaluza-Klein modes in the s-channel. We calculate the density matrix for the top-antitop pair production including the new contribution. With a reasonable parameter choice in the Randall-Sundrum model, we find a sizable deviation of the top-antitop pair production cross section and the top spin correlations from those in the standard model. In particular, resonant productions of the graviton Kaluza-Klein modes give rise to a remarkable enhancement of such a deviation.
| Original language | English |
|---|---|
| Journal | Physical Review D : Particles, Fields, Gravitation and Cosmology |
| Volume | 75 |
| Issue number | 9 |
| Pages (from-to) | 095008 |
| Number of pages | 8 |
| ISSN | 1550-7998 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |
Fields of Science
- 114 Physical sciences
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