What can we infer about heavy dark matter?
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Until recently, most of the ideas regarding the nature of dark matter revolved around WIMPs. Now that the LHC has not turned up any evidence of SUSY, people are starting to earnestly look towards other options, especially the axion and other light scalar (or possibly vector) particles. People have proposed lots of ways to look for such particles, and many such experiments (e.g. ADMX and CASPEr) are currently underway.
On the other end of the mass spectrum are the MACHOs, and astronomical observations (looking for microlensing effects, as described on the wikipedia page) can rule these out in certain mass ranges as comprising dark matter.
Until recently, most of the ideas regarding the nature of dark matter revolved around WIMPs. Now that the LHC has not turned up any evidence of SUSY, people are starting to earnestly look towards other options, especially the axion and other light scalar (or possibly vector) particles. People have proposed lots of ways to look for such particles, and many such experiments (e.g. ADMX and CASPEr) are currently underway.
On the other end of the mass spectrum are the MACHOs, and astronomical observations (looking for microlensing effects, as described on the wikipedia page) can rule these out in certain mass ranges as comprising dark matter.
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