Limits...
Supersymmetric dark matter after LHC run 1.

Bagnaschi EA, Buchmueller O, Cavanaugh R, Citron M, De Roeck A, Dolan MJ, Ellis JR, Flächer H, Heinemeyer S, Isidori G, Malik S, Martínez Santos D, Olive KA, Sakurai K, de Vries KJ, Weiglein G - Eur Phys J C Part Fields (2015)

Bottom Line: These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10.We find that the [Formula: see text] coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for [Formula: see text] events and long-lived charged particles, whereas their H / A funnel, focus-point and [Formula: see text] coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments.We find that the dominant DM mechanism in our pMSSM10 analysis is [Formula: see text] coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.

View Article: PubMed Central - PubMed

Affiliation: DESY, Notkestraße 85, 22607 Hamburg, Germany.

ABSTRACT

Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, [Formula: see text], assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau [Formula: see text], stop [Formula: see text] or chargino [Formula: see text], resonant annihilation via direct-channel heavy Higgs bosons H / A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the [Formula: see text] coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for [Formula: see text] events and long-lived charged particles, whereas their H / A funnel, focus-point and [Formula: see text] coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments. We find that the dominant DM mechanism in our pMSSM10 analysis is [Formula: see text] coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.

No MeSH data available.


Related in: MedlinePlus

The  planes in the CMSSM (upper left), the NUHM1 (upper right) and the NUHM2 (lower left), showing the regions where the lowest- points have  and  s  s: the lifetimes [14] of these points are color-coded, as indicated in the legends. The red and blue contours are for  relative to the absolute minimum. Also shown in these panels as solid purple contours are the current LHC 95 % exclusions from   searches in the  coannihilation regions, and as dashed purple contours the prospective 5 discovery reaches for   searches at the LHC with 3000/fb at 14 TeV, corresponding approximately to the 95 % CL exclusion sensitivity with 300/fb at 14 TeV. As discussed in the text, the sensitivities of LHC searches for metastable ’s in the  coannihilation region are expected to be similar [98]. The lower right panel shows the one-dimensional  function in the pMSSM10 for the lifetime of the  in the range  s  s
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4622175&req=5

Fig3: The planes in the CMSSM (upper left), the NUHM1 (upper right) and the NUHM2 (lower left), showing the regions where the lowest- points have and  s  s: the lifetimes [14] of these points are color-coded, as indicated in the legends. The red and blue contours are for relative to the absolute minimum. Also shown in these panels as solid purple contours are the current LHC 95 % exclusions from  searches in the coannihilation regions, and as dashed purple contours the prospective 5 discovery reaches for  searches at the LHC with 3000/fb at 14 TeV, corresponding approximately to the 95 % CL exclusion sensitivity with 300/fb at 14 TeV. As discussed in the text, the sensitivities of LHC searches for metastable ’s in the coannihilation region are expected to be similar [98]. The lower right panel shows the one-dimensional function in the pMSSM10 for the lifetime of the in the range  s  s

Mentions: Summary of the detectability of supersymmetry in the CMSSM, NUHM1, NUHM2, and pMSSM10 models at the LHC in searches for  events, long-lived charged particles (LL) and heavy A / H Higgs bosons, and in direct DM search experiments, depending on the dominant mechanism for bringing the DM density into the cosmological range. The symbols , () and indicate good prospects, interesting possibilities and poorer prospects, respectively. The symbol – indicates that a DM mechanism is not important for the corresponding model. The LHC information is drawn largely from Figs. 1, 3 and 4, and the direct DM search information from Fig. 8


Supersymmetric dark matter after LHC run 1.

Bagnaschi EA, Buchmueller O, Cavanaugh R, Citron M, De Roeck A, Dolan MJ, Ellis JR, Flächer H, Heinemeyer S, Isidori G, Malik S, Martínez Santos D, Olive KA, Sakurai K, de Vries KJ, Weiglein G - Eur Phys J C Part Fields (2015)

The  planes in the CMSSM (upper left), the NUHM1 (upper right) and the NUHM2 (lower left), showing the regions where the lowest- points have  and  s  s: the lifetimes [14] of these points are color-coded, as indicated in the legends. The red and blue contours are for  relative to the absolute minimum. Also shown in these panels as solid purple contours are the current LHC 95 % exclusions from   searches in the  coannihilation regions, and as dashed purple contours the prospective 5 discovery reaches for   searches at the LHC with 3000/fb at 14 TeV, corresponding approximately to the 95 % CL exclusion sensitivity with 300/fb at 14 TeV. As discussed in the text, the sensitivities of LHC searches for metastable ’s in the  coannihilation region are expected to be similar [98]. The lower right panel shows the one-dimensional  function in the pMSSM10 for the lifetime of the  in the range  s  s
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4622175&req=5

Fig3: The planes in the CMSSM (upper left), the NUHM1 (upper right) and the NUHM2 (lower left), showing the regions where the lowest- points have and  s  s: the lifetimes [14] of these points are color-coded, as indicated in the legends. The red and blue contours are for relative to the absolute minimum. Also shown in these panels as solid purple contours are the current LHC 95 % exclusions from  searches in the coannihilation regions, and as dashed purple contours the prospective 5 discovery reaches for  searches at the LHC with 3000/fb at 14 TeV, corresponding approximately to the 95 % CL exclusion sensitivity with 300/fb at 14 TeV. As discussed in the text, the sensitivities of LHC searches for metastable ’s in the coannihilation region are expected to be similar [98]. The lower right panel shows the one-dimensional function in the pMSSM10 for the lifetime of the in the range  s  s
Mentions: Summary of the detectability of supersymmetry in the CMSSM, NUHM1, NUHM2, and pMSSM10 models at the LHC in searches for  events, long-lived charged particles (LL) and heavy A / H Higgs bosons, and in direct DM search experiments, depending on the dominant mechanism for bringing the DM density into the cosmological range. The symbols , () and indicate good prospects, interesting possibilities and poorer prospects, respectively. The symbol – indicates that a DM mechanism is not important for the corresponding model. The LHC information is drawn largely from Figs. 1, 3 and 4, and the direct DM search information from Fig. 8

Bottom Line: These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10.We find that the [Formula: see text] coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for [Formula: see text] events and long-lived charged particles, whereas their H / A funnel, focus-point and [Formula: see text] coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments.We find that the dominant DM mechanism in our pMSSM10 analysis is [Formula: see text] coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.

View Article: PubMed Central - PubMed

Affiliation: DESY, Notkestraße 85, 22607 Hamburg, Germany.

ABSTRACT

Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, [Formula: see text], assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau [Formula: see text], stop [Formula: see text] or chargino [Formula: see text], resonant annihilation via direct-channel heavy Higgs bosons H / A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the [Formula: see text] coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for [Formula: see text] events and long-lived charged particles, whereas their H / A funnel, focus-point and [Formula: see text] coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments. We find that the dominant DM mechanism in our pMSSM10 analysis is [Formula: see text] coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.

No MeSH data available.


Related in: MedlinePlus