Single top-quark production by direct supersymmetric flavor-changing neutral-current interactions at the LHC
| Autor: | Wolfgang Hollik, Jaume Guasch, Joan Sola, Siannah Penaranda |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Quark
Physics Nuclear and High Energy Physics Particle physics Top quark Large Hadron Collider Luminosity (scattering theory) Flavor-changing neutral current Physics beyond the Standard Model High Energy Physics::Phenomenology FOS: Physical sciences Supersymmetry Atomic and Molecular Physics and Optics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Production (computer science) High Energy Physics::Experiment Particle Physics - Phenomenology |
| Popis: | Production of (electrically neutral) heavy-quark pairs, such as t{\bar c} and {\bar t}c, is extremely suppressed in the SM. In supersymmetric (SUSY) theories, such as the MSSM, the number of these events can be significantly enhanced thanks (mainly) to the FCNC couplings of gluinos. We compute the efficiency of this mechanism for FCNC production of heavy quarks at the LHC. We find that \sigma (pp\to t\bar{c}+\bar{t}c) can reach 1 pb, and therefore one can expect up to 10^{5} events per 100 fb^{-1} of integrated luminosity (with no counterpart in the SM). Their detection would be instant evidence of new physics, and could be a strong indication of underlying SUSY dynamics. Comment: 6 pages, 3 figures. New references and comments added. Invited talk at the 7th International Symposium on Radiative Corrections (RADCOR 2005), Shonan Village, Japan, 2005 |
| Databáze: | OpenAIRE |
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