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In the last years, the persistent source 1E 1743.1-2843 has been observed inthe X-rays, but never above 20 keV. In previous works, it was stressed that apossible high energy emission could give further indications on the accretingobject nature which remains still unknown. We present here more than two yearsof 1E 1743.1-2843 monitoring with INTEGRAL/IBIS as well as public XMM-Newtonand Chandra X-ray observations. The temporal study in the 20-40 keV band showsa rather constant flux on few months time scale. Based on this result we haveperformed the broad-band spectral analysis using EPIC/IBIS non simultaneousdata and ACIS-I/IBIS data collected during 2004. In ~2 Ms, we report adetection of 6 sigma in the energy range 35-70 keV. The first broad-band study(2-70 keV) shows a steep slope (~3) and a black body temperature of 1.7 keV.Combining spectral parameters and discussion about the luminosity evaluationsfor different possible distances, our conclusions are in favour of a LMXBsystem with a neutron star at distance higher than the Galactic Centre, eventhough a firm conclusion can not be stated.Comment: 4 pages, 3 figures, accepted for publication in A&

First broad band study of the mysterious source 1E 1743.1–2843