First results on sub-GeV spin-dependent dark matter interactions with$^{7}$Li

A.H. Abdelhameed , G. Angloher , P. Bauer , A. Bento , E. Bertoldo , C. Bucci , L. Canonica , A. d'Addabbo , X. Defay , S. Di Lorenzo , A. Erb , F.V. Feilitzsch , N. Ferreiro Iachellini , S. Fichtinger , A. Fuss , P. Gorla , D. Hauff , J. Jochum , A. Kinast , H. Kluck , H. Kraus , A. Langenkämper , M. Mancuso , V. Mokina , E. Mondragon , A. Münster , M. Olmi , T. Ortmann , C. Pagliarone , L. Pattavina , F. Petricca , W. Potzel , F. Pröbst , F. Reindl , J. Rothe , K. Schäffner , J. Schieck , V. Schipperges , D. Schmiedmayer , S. Schönert , C. Schwertner , M. Stahlberg , L. Stodolsky , C. Strandhagen , R. Strauss , C. Türkoğlu , I. Usherov , M. Willers , V. Zema , M. Chapellier (1) , A. Giuliani (1) , C. Nones (2) , D.V. Poda (1) , V.N. Shlegel , M. Velázquez (3) , A.S. Zolotarova (2)

1 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 SIMaP - Science et Ingénierie des Matériaux et Procédés

In this work, we want to highlight the potential of lithium as a target for spin-dependent dark matter search in cryogenic experiments, with a special focus on the low-mass region of the parameter space. We operated a prototype detector module based on a $\hbox {Li}_2\hbox {MoO}_4$ target crystal in an above-ground laboratory. Despite the high background environment, the detector sets a competitive limit on spin-dependent interactions of dark matter particles with protons and neutrons for masses between $0.8~\hbox {GeV/c}^2$ and $1.5~\hbox {GeV/c}^2$.

Mots clés: spin: dependence; dark matter: interaction; target: crystal; cryogenics; background; p: mass; n: mass; lithium; S030DN5; S030DP1; S030DP5

Domaines: Instrumentations et Détecteurs [physics.ins-det]

A.H. Abdelhameed, G. Angloher, P. Bauer, A. Bento, E. Bertoldo, et al.. First results on sub-GeV spin-dependent dark matter interactions with$^{7}$Li. European Physical Journal C: Particles and Fields, 2019, 79 (7), pp.630. ⟨10.1140/epjc/s10052-019-7126-4⟩. ⟨hal-02058571⟩