Cargando…
Spin Discrimination in Three-Body Decays
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 $X\to f\bar{f} Y$. Here...
Autores principales: | , , |
---|---|
Formato: | info:eu-repo/semantics/article |
Lenguaje: | eng |
Publicado: |
JHEP
2010
|
Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP08(2010)053 http://cds.cern.ch/record/1267065 |
_version_ | 1780920122088620032 |
---|---|
author | Edelhäuser, Lisa Porod, Werner Singh, Ritesh K |
author_facet | Edelhäuser, Lisa Porod, Werner Singh, Ritesh K |
author_sort | Edelhäuser, Lisa |
collection | CERN |
description | 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 $X\to f\bar{f} Y$. 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. |
format | info:eu-repo/semantics/article |
id | cern-1267065 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2010 |
publisher | JHEP |
record_format | invenio |
spelling | cern-12670652019-09-30T06:29:59Z doi:10.1007/JHEP08(2010)053 http://cds.cern.ch/record/1267065 eng Edelhäuser, Lisa Porod, Werner Singh, Ritesh K Spin Discrimination in Three-Body Decays Particle Physics - Phenomenology 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 $X\to f\bar{f} Y$. 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. info:eu-repo/grantAgreement/EC/FP7/237920 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/1267065 JHEP JHEP, (2010) pp. 053 2010-05-21 |
spellingShingle | Particle Physics - Phenomenology Edelhäuser, Lisa Porod, Werner Singh, Ritesh K Spin Discrimination in Three-Body Decays |
title | Spin Discrimination in Three-Body Decays |
title_full | Spin Discrimination in Three-Body Decays |
title_fullStr | Spin Discrimination in Three-Body Decays |
title_full_unstemmed | Spin Discrimination in Three-Body Decays |
title_short | Spin Discrimination in Three-Body Decays |
title_sort | spin discrimination in three-body decays |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1007/JHEP08(2010)053 http://cds.cern.ch/record/1267065 http://cds.cern.ch/record/1267065 |
work_keys_str_mv | AT edelhauserlisa spindiscriminationinthreebodydecays AT porodwerner spindiscriminationinthreebodydecays AT singhriteshk spindiscriminationinthreebodydecays |