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Antideuterons from Decaying Gravitino Dark Matter


Timur Delahaye

OKC
in collaboration with Michael Grefe, based on 1503.01101 and 1305.7183
Galaxy
Galaxy
Galaxy
Galaxy Galaxy Galaxy Galaxy Galaxy Galaxy

$$ \vec{\nabla} \cdot(\textcolor{orange}{\vec{V}_c}\, \psi - \textcolor{red}{K_0\, \beta\, p^\delta}\, \vec{\nabla} \psi ) + \partial_E\left(b_{\text{loss}}\,\psi -D_{EE}\, \partial_E\psi\right)\\ = \textcolor{rgb(162,244,160)}{Q^{\text{prim}}} + \textcolor{darkgreen}{2\,h}\,\delta(z) \textcolor{rgb(248,42,47)}{Q^{\text{sec}}} - \textcolor{darkgreen}{2\,h}\,\delta(z)\,\Gamma^{\text{ann}}\,\psi$$

Galaxy Delahaye & Grefe JCAP 2013
Galaxy Delahaye & Grefe JCAP 2013
$$\Gamma_{\psi_{3/2}\rightarrow\gamma\nu_i} \simeq \frac{\xi_i^2\,m_{3/2}^3}{32\,\pi\,M_P^2}\,m_Z^2\,s^2_{\theta_W}c^2_{\theta_W}\left(\frac{M_2-M_1}{M_1\,M_2}\right)^2$$ $$\Gamma_{3/2}\rightarrow\frac{\xi^2\,m_{3/2}^3}{48\,\pi\,M_P^2}$$
$$\Psi_{3/2} \rightarrow \gamma \nu_i, Z\nu_i, W\ell_i, h\nu_i$$ nomod SolMod Delahaye & Grefe JCAP 2013
Galaxy Delahaye & Grefe JCAP 2013

$$\text{The production of } \bar{d} \text{ takes place through}$$ $$\text{the coalescence : } \bar{p} + \bar{n} + X \rightarrow \bar{d} + X^*.$$

Dbar
Dbar Delahaye & Grefe JCAP 2015
Dbar Delahaye & Grefe JCAP 2015
Dbar Delahaye & Grefe JCAP 2015
Dbar Delahaye & Grefe JCAP 2015

Conclusion

Cosmic Antideuterons will probably not be detected by the next generation of experiments

Complementarity between antiprotons and antideuterons needs to be studied deeper before designing new experiments.

There may be some energy ranges of interest

Dbar Delahaye & Grefe JCAP 2015
Dbar Delahaye & Grefe JCAP 2015
Dbar Delahaye & Grefe JCAP 2015

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