[Hps] White Dwarfs constrain Dark Forces

[Rouven Essig]

Hi All,

Yes, the constraints in this paper are irrelevant for the HPS & APEX
parameter space, since we look for visible A' decays (and usually assume
there isn't anything else in the hidden sector that is lighter than the
A').  They are relevant for the invisible A' search that DarkLight and
VEPP-3 can do, *assuming* that the A' decays to hidden sector particles
with mass less than a few keV.  If the A' instead decays invisibly to
hidden-sector stuff with mass above a few keV or so, then again the
constraints in this paper are irrelevant.

Rouven


On Mon, Apr 1, 2013 at 10:23 AM, Francois-Xavier Girod <fxgirod at jlab.org>wrote:

>
> Dear collaborators,
>
> I just noticed a paper entitled "White Dwarfs constrain Dark Forces"
> http://arxiv.org/abs/1303.7232
>
> If I understand correctly, the HPS parameter space would be excluded in
> conjunction with light dark matter, but these constraints from WD cooling
> disappear with dark matter in the 10 GeV - 10 TeV range (mentioned in our
> proposal as WIMP miracle).
>
> Best regards,
> FX
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