Context :

Aims : We carried out a radial-velocity survey to search for planets around metal-poor stars .
In this paper we report the discovery of two planets around HIP 11952 , a metal-poor star with [ Fe/H ] = -1.9 that belongs to our target sample .

Methods : Radial velocity variations of HIP 11952 were monitored systematically with FEROS at the 2.2 m telescope located at the ESO La Silla observatory from August 2009 until January 2011 .
We used a cross-correlation technique to measure the stellar radial velocities ( RV ) .

Results : We detected a long-period RV variation of 290 d and a short-period one of 6.95 d. The spectroscopic analysis of the stellar activity reveals a stellar rotation period of 4.8 d. The Hipparcos photometry data shows intra-day variabilities , which give evidence for stellar pulsations .
Based on our analysis , the observed RV variations are most likely caused by the presence of unseen planetary companions .
Assuming a primary mass of 0.83 M _ { \odot } , we computed minimum planetary masses of 0.78 M _ { \mathrm { Jup } } for the inner and 2.93 M _ { \mathrm { Jup } } for the outer planet .
The semi-major axes are a _ { 1 } = 0.07 AU and a _ { 2 } = 0.81 AU , respectively .

Conclusions : HIP 11952 is one of very few stars with [ Fe/H ] < -1.0 which have planetary companions .
This discovery is important to understand planet formation around metal-poor stars .