Cargando…

End of the CMSSM coannihilation strip is nigh

A recent global fit to the CMSSM incorporating current constraints on supersymmetry, including missing transverse energy searches at the LHC, BR(B_s to mu+ mu-) and the direct XENON100 search for dark matter, favours points towards the end of the stau-neutralino (stau_1- chi) coannihilation strip wi...

Descripción completa

Detalles Bibliográficos
Autores principales: Citron, M., Ellis, J., Luo, F., Marrouche, J., Olive, K.A., de Vries, K.J.
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.87.036012
http://cds.cern.ch/record/1499788
_version_ 1780926824192147456
author Citron, M.
Ellis, J.
Luo, F.
Marrouche, J.
Olive, K.A.
de Vries, K.J.
author_facet Citron, M.
Ellis, J.
Luo, F.
Marrouche, J.
Olive, K.A.
de Vries, K.J.
author_sort Citron, M.
collection CERN
description A recent global fit to the CMSSM incorporating current constraints on supersymmetry, including missing transverse energy searches at the LHC, BR(B_s to mu+ mu-) and the direct XENON100 search for dark matter, favours points towards the end of the stau-neutralino (stau_1- chi) coannihilation strip with relatively large m_1/2 and 10 < tan beta < 40 and points in the H/A rapid-annihilation funnel with tan beta ~ 50. The coannihilation points typically have m_stau_1-m_chi < 5 GeV, and a significant fraction, including the most-favoured point, has m_stau_1-m_chi < m_tau. In such a case, the stau_1 lifetime would be so long that the stau_1 would be detectable as a long-lived massive charged particle that may decay inside or outside the apparatus. We show that CMSSM scenarios close to the tip of the coannihilation strip for tan beta < 40 are already excluded by LHC searches for massive charged particles, and discuss the prospects for their detection in the CMS and ATLAS detectors via time-of-flight measurements, anomalous heavy ionization or decays into one or more soft charged particles.
id cern-1499788
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14997882023-03-12T04:20:10Zdoi:10.1103/PhysRevD.87.036012http://cds.cern.ch/record/1499788engCitron, M.Ellis, J.Luo, F.Marrouche, J.Olive, K.A.de Vries, K.J.End of the CMSSM coannihilation strip is nighParticle Physics - PhenomenologyA recent global fit to the CMSSM incorporating current constraints on supersymmetry, including missing transverse energy searches at the LHC, BR(B_s to mu+ mu-) and the direct XENON100 search for dark matter, favours points towards the end of the stau-neutralino (stau_1- chi) coannihilation strip with relatively large m_1/2 and 10 < tan beta < 40 and points in the H/A rapid-annihilation funnel with tan beta ~ 50. The coannihilation points typically have m_stau_1-m_chi < 5 GeV, and a significant fraction, including the most-favoured point, has m_stau_1-m_chi < m_tau. In such a case, the stau_1 lifetime would be so long that the stau_1 would be detectable as a long-lived massive charged particle that may decay inside or outside the apparatus. We show that CMSSM scenarios close to the tip of the coannihilation strip for tan beta < 40 are already excluded by LHC searches for massive charged particles, and discuss the prospects for their detection in the CMS and ATLAS detectors via time-of-flight measurements, anomalous heavy ionization or decays into one or more soft charged particles.A recent global fit to the constrained minimal supersymmetric extension of the Standard Model incorporating current constraints on supersymmetry, including missing transverse energy searches at the LHC, BR(Bs→μ+μ-) and the direct XENON100 search for dark matter, favors points towards the end of the stau-neutralino (τ˜1-χ) coannihilation strip with relatively large m1/2 and 10≲tan⁡β≲40 and points in the H/A rapid-annihilation funnel with tan⁡β∼50. The coannihilation points typically have mτ˜1-mχ≲5  GeV, and a significant fraction, including the most-favored point, has mτ˜1-mχ<mτ. In such a case, the τ˜1 lifetime would be so long that the τ˜1 would be detectable as a long-lived massive charged particle that may decay inside or outside the apparatus. We show that CMSSM scenarios close to the tip of the coannihilation strip for tan⁡β≲40 are already excluded by LHC searches for massive charged particles and discuss the prospects for their detection in the CMS and ATLAS detectors via time-of-flight measurements, anomalous heavy ionization or decays into one or more soft charged particles.A recent global fit to the CMSSM incorporating current constraints on supersymmetry, including missing transverse energy searches at the LHC, BR(B_s to mu+ mu-) and the direct XENON100 search for dark matter, favours points towards the end of the stau-neutralino (stau_1- chi) coannihilation strip with relatively large m_1/2 and 10 < tan beta < 40 and points in the H/A rapid-annihilation funnel with tan beta ~ 50. The coannihilation points typically have m_stau_1-m_chi < 5 GeV, and a significant fraction, including the most-favoured point, has m_stau_1-m_chi < m_tau. In such a case, the stau_1 lifetime would be so long that the stau_1 would be detectable as a long-lived massive charged particle that may decay inside or outside the apparatus. We show that CMSSM scenarios close to the tip of the coannihilation strip for tan beta < 40 are already excluded by LHC searches for massive charged particles, and discuss the prospects for their detection in the CMS and ATLAS detectors via time-of-flight measurements, anomalous heavy ionization or decays into one or more soft charged particles.arXiv:1212.2886KCL-PH-TH-2012-46LCTS-2012-32CERN-PH-TH-2012-331UMN-TH-3127-12FTPI-MINN-12-38UMN--TH--3127-12FTPI--MINN--12-38KCL-PH-TH-2012-46LCTS-2012-32CERN-PH-TH-2012-331UMN--TH--3127-12FTPI--MINN--12-38oai:cds.cern.ch:14997882012-12-13
spellingShingle Particle Physics - Phenomenology
Citron, M.
Ellis, J.
Luo, F.
Marrouche, J.
Olive, K.A.
de Vries, K.J.
End of the CMSSM coannihilation strip is nigh
title End of the CMSSM coannihilation strip is nigh
title_full End of the CMSSM coannihilation strip is nigh
title_fullStr End of the CMSSM coannihilation strip is nigh
title_full_unstemmed End of the CMSSM coannihilation strip is nigh
title_short End of the CMSSM coannihilation strip is nigh
title_sort end of the cmssm coannihilation strip is nigh
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.87.036012
http://cds.cern.ch/record/1499788
work_keys_str_mv AT citronm endofthecmssmcoannihilationstripisnigh
AT ellisj endofthecmssmcoannihilationstripisnigh
AT luof endofthecmssmcoannihilationstripisnigh
AT marrouchej endofthecmssmcoannihilationstripisnigh
AT oliveka endofthecmssmcoannihilationstripisnigh
AT devrieskj endofthecmssmcoannihilationstripisnigh