On the Phenomenology of Hidden Valleys with Heavy Flavor
| dc.creator | Strassler, Matthew J. | |
| dc.date | 2008-06-14 | |
| dc.date.accessioned | 2026-07-07T09:44:58Z | |
| dc.date.available | 2026-07-07T09:44:58Z | |
| dc.description | A preliminary investigation of a large class of Hidden Valley models is presented. These models are more challenging than those considered in arXiv:0712.2041 [hep-ph]; although they produce a new light resonance which decays to heavy standard model fermions, they exhibit no light dilepton resonance. A heavy $Z'$ decaying to v-hadrons, which in turn decay mainly to bottom quarks and tau leptons, is considered; six case studies are investigated, using a new Monte Carlo simulation package. It is found that the one-to-one correspondence of jets and partons is badly broken, and the high-multiplicity heavy-flavor signal probably cannot be isolated by counting jets, with or without heavy-flavor tags. Instead, other measures, such as counting and correlating vertices or displaced tracks, and possibly counting of (non-isolated) muons and use of event-shape variables, should be combined with scalar transverse energy and/or missing transverse energy to reduce backgrounds. Within the resulting sample, searches for the v-pion mass resonance in both di-jet and single-jet invariant mass can help confirm a signal. The best observable in a perfect calorimeter seems to be single-jet invariant mass for jets of larger radius ($R$=0.7), although this needs further study in a realistic setting. A more detailed signal-to-background study is needed as a next step, but will face the difficulty of estimating the various high-multiplicity backgrounds. | |
| dc.description | 23 pages, 39 figures | |
| dc.identifier | https://arxiv.org/abs/0806.2385 | |
| dc.identifier | http://arxiv.org/abs/0806.2385 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/163056 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | On the Phenomenology of Hidden Valleys with Heavy Flavor | |
| dc.type | text |