Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at √s =8TeV with the ATLAS detector
A search is presented for production of dark-matter particles recoiling against a leptonically decaying Z boson in 20.3 fb<SUP>-1</SUP> of <i>pp</i> collisions at √s=8 TeV with the ATLAS detector at the Large Hadron Collider. Events with large missing transverse momentum and...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Argentina |
| Institución: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/85094 |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85094 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias Exactas Física dark matter Z boson proton–proton collisions ATLAS detector |
| Sumario: | A search is presented for production of dark-matter particles recoiling against a leptonically decaying Z boson in 20.3 fb<SUP>-1</SUP> of <i>pp</i> collisions at √s=8 TeV with the ATLAS detector at the Large Hadron Collider. Events with large missing transverse momentum and two oppositely charged electrons or muons consistent with the decay of a Z boson are analyzed. No excess above the Standard Model prediction is observed. Limits are set on the mass scale of the contact interaction as a function of the dark-matter particle mass using an effective field theory description of the interaction of dark matter with quarks or with Z bosons. Limits are also set on the coupling and mediator mass of a model in which the interaction is mediated by a scalar particle. |
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