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Título: | Spin discrimination in three-body decays |
Autor: | Porod, Werner CSIC; Edelhäuser, Lisa; Singh, Ritesh K. | Palabras clave: | Spin determination Model descrimination |
Fecha de publicación: | ago-2010 | Editor: | Springer Nature | Citación: | Journal of High Energy Physics 8: 053 (2010) | Resumen: | The identification of the correct model for physics beyond the Standard Model requires the determination of the spin of new particles. We investigate to which extent the spin of a new particle X can be identified in scenarios where it decays dominantly in three-body decays X -> f (f) over barY. Here we assume that Y is a candidate for dark matter and escapes direct detection at a high energy collider such as the LHC. We show that in the case that all intermediate particles are heavy, one can get information on the spins of X and Y at the LHC by exploiting the invariant mass distribution of the two standard model fermions. We develop a model-independent strategy to determine the spins without prior knowledge of the unknown couplings and test it in a series of Monte Carlo studies. | Versión del editor: | http://dx.doi.org/10.1007/JHEP08(2010)053 | URI: | http://hdl.handle.net/10261/29110 | DOI: | 10.1007/JHEP08(2010)053 | ISSN: | 1126-6708 |
Aparece en las colecciones: | (IFIC) Artículos |
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spin.pdf | 380,84 kB | Adobe PDF | Visualizar/Abrir |
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