| Article | |
| Report number | arXiv:1212.2886 ; KCL-PH-TH-2012-46 ; LCTS-2012-32 ; CERN-PH-TH-2012-331 ; UMN-TH-3127-12 ; FTPI-MINN-12-38 ; UMN--TH--3127-12 ; FTPI--MINN--12-38 ; KCL-PH-TH-2012-46 ; LCTS-2012-32 ; CERN-PH-TH-2012-331 ; UMN--TH--3127-12 ; FTPI--MINN--12-38 |
| Title | End of the CMSSM coannihilation strip is nigh |
| Author(s) | Citron, M. (Imperial Coll., London) ; Ellis, J. (King's Coll. London ; CERN) ; Luo, F. (King's Coll. London) ; Marrouche, J. (Imperial Coll., London) ; Olive, K.A. (Minnesota U. ; Minnesota U., Theor. Phys. Inst.) ; de Vries, K.J. (Imperial Coll., London) |
| Publication | 2013-02-22 |
| Imprint | 13 Dec 2012 |
| Number of pages | 18 |
| Note | Comments: 33 pages, 19 pdf figures 33 pages, 19 pdf figures |
| In: | Phys. Rev. D 87 (2013) 036012 |
| DOI | 10.1103/PhysRevD.87.036012 |
| Subject category | Particle Physics - Phenomenology |
| Abstract | 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. |
| Copyright/License | Preprint: © 2012-2024 CERN (License: CC-BY-3.0) |
Corresponding record in: Inspire
Record created 2012-12-14, last modified 2023-03-12