Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T.

E Aprile,C Hasterok,M Garbini,K Miller,A Kopec,Z Greene,J Pienaar,S Diglio,G Bruno,G Eurin,K Morå,C Weinheimer,J Aalbers,N Priel,H Simgen,A Fieguth,F Arneodo,D Cichon,T Zhu,J Naganoma,E Brown,Z Xu,H Landsman,Y Zhang,L Althueser,S Bruenner,K Micheneau,J Mahlstedt,J Howlett,D Coderre,H Qiu,Y Mosbacher,R Budnik,A Elykov,U Oberlack,E López Fune,C Tunnell,S Kazama,L Scotto Lavina,G Trinchero,F Toschi,G Sartorelli,F Agostini,J Conrad,V Pizzella,M Galloway,Y Wei,A Kish,M Scheibelhut,S Mastroianni,M Murra,G Plante,T Marrodán Undagoitia,J Schreiner,W Fulgione,A Rocchetti,B Pelssers,B Bauermeister,N Šarčević,D Wenz,P De Perio,J Wulf,E Shockley,A Rizzo,L Baudis,C Capelli,D Thers,A Brown,K Ni,K Odgers,R Podviianiuk,D Schulte,N Upole,C Wittweg,F Piastra,J Ye,L Grandi,M Alfonsi,S Reichard,P Di Gangi,M Selvi,P Shagin,F Lombardi,A Molinario,E Hogenbirk,A Gallo Rosso,D Masson,T Berger,H Wang,A Di Giovanni,A Manfredini,C Therreau,O Wack,J Masbou,D Ramírez García,M Messina,C Macolino,Z Wang,M Iacovacci,M Vargas,F Joerg,F Gao,M Lindner,Q Lin,G Koltman,R Itay,N Rupp,F D Amaro ,S M Schindler ,J P Cussonneau ,L J Levinson ,Benedikt Riedel ,A D Ferella ,Miguel Silva ,J M F Dos Santos ,R F Lang ,P A Breur ,J M R Cardoso ,V C Antochi ,A P Colijn ,Fabrizio Marignetti ,Jiaming Fei ,J A M Lopes ,M Schümann ,M T Anthony ,Stefan Lindemann ,M P Decowski ,M L Benabderrahmane ,J P Zopounidis

doi:10.1103/physrevlett.122.141301

Abstract

We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from the XENON1T dark matter search experiment. The analysis uses the full ton year exposure of XENON1T to constrain the spin-dependent proton-only and neutron-only cases. No significant signal excess is observed, and a profile likelihood ratio analysis is used to set exclusion limits on the WIMP-nucleon interactions. This includes the most stringent constraint to date on the WIMP-neutron cross section, with a minimum of 6.3×10^{-42} cm^{2} at 30 GeV/c^{2} and 90%confidence level. The results are compared with those from collider searches and used to exclude new parameter space in an isoscalar theory with an axial-vector mediator.

Highlights

16INFN-Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 L’Aquila, Italy 17INFN-Torino and Osservatorio Astrofisico di Torino, 10125 Torino, Italy
One leading direct detection technique uses liquid xenon (LXe) time projection chambers (TPCs), placed underground to reduce backgrounds induced by cosmic rays [8,9,10,11]
XENON1T, the largest and most sensitive of these experiments to date, is a dual-phase xenon TPC located at a depth of 3600 m water-equivalent at the INFN Laboratori Nazionali del Gran Sasso in L’Aquila, Italy [12]

Summary

Introduction

We report the first experimental results on spin-dependent elastic WIMP-nucleon scattering from the XENON1T dark matter search experiment. XENON1T reported SI results from a tonne-year exposure, which achieved the lowest ever background in a direct detection experiment and set the most stringent 90% C.L. upper limit to date on the SI cross section for WIMP masses above 6 GeV/c2 [8].

Results

Conclusion