Laboratory experiments searching for galactic dark matter particles scattering off nuclei have so far not been able to establish a discovery. We use data from the XENON100 experiment to search for dark matter interacting with electrons. With no evidence for a signal above the low background of our experiment, we exclude a variety of representative dark matter models that would induce electronic recoils. For axial-vector couplings to electrons, we exclude cross sections above 6 × 10(-35) cm(2) for particle masses of m(χ) = 2 GeV/c(2). Independent of the dark matter halo, we exclude leptophilic models as an explanation for the long-standing DAMA/LIBRA signal, such as couplings to electrons through axial-vector interactions at a 4.4σ confidence level, mirror dark matter at 3.6σ, and luminous dark matter at 4.6σ.
Exclusion of leptophilic dark matter models using XENON100 electronic recoil data / XENON Collaboration: […; Aprile E; Agostini F; Alfonsi M; Arazi L; Arisaka K; Arneodo F; Auger M; Balan C; Barrow P; Baudis L; Bauermeister B; Behrens A; Brown A; Brown E; Bruenner S; Bruno G; Budnik R; Bütikofer L; Cardoso JM; Cervantes M; Coderre D; Colijn AP; Contreras H; Cussonneau JP; Decowski MP; Di Giovanni A; Duchovni E; Fattori S; Ferella AD; Fieguth A; Fulgione W; Gao F; Garbini M; Geis C; Goetzke LW; Grignon C; Gross E; Hampel W; Itay R; Kaether F; Kaminsky B; Kessler G; Kish A; Landsman H; Lang RF; Le Calloch M; Lellouch D; Levinson L; Levy C; Lindemann S; Lindner M; Lopes JA; Lyashenko A; Macmullin S; Marrodán Undagoitia T; Masbou J; Massoli F V; Mayani D; Melgarejo Fernandez AJ; Meng Y; Messina M; Miguez B; Molinario A; Morana G; Murra M; Naganoma J; Ni K; Oberlack U; Orrigo SE; Pakarha P; Pantic E; Persiani R; Piastra F; Pienaar J; Plante G; Priel N; Rauch L; Reichard S; Reuter C; Rizzo A; Rosendahl S; dos Santos JM; Sartorelli G; Schindler S; Schreiner J; Schumann M; Scotto Lavina L; Selvi M; Shagin P; Simgen H; Teymourian A; Thers D; Tiseni A; Trinchero G; Tunnell C; Vitells O; Wall R; Wang H; Weber M; Weinheimer C; …]. - In: SCIENCE. - ISSN 0036-8075. - ELETTRONICO. - 349:6250(2015), pp. 851-854. [10.1126/science.aab2069]
Exclusion of leptophilic dark matter models using XENON100 electronic recoil data
GARBINI, MARCO;MASSOLI, FABIO VALERIO;SARTORELLI, GABRIELLA;
2015
Abstract
Laboratory experiments searching for galactic dark matter particles scattering off nuclei have so far not been able to establish a discovery. We use data from the XENON100 experiment to search for dark matter interacting with electrons. With no evidence for a signal above the low background of our experiment, we exclude a variety of representative dark matter models that would induce electronic recoils. For axial-vector couplings to electrons, we exclude cross sections above 6 × 10(-35) cm(2) for particle masses of m(χ) = 2 GeV/c(2). Independent of the dark matter halo, we exclude leptophilic models as an explanation for the long-standing DAMA/LIBRA signal, such as couplings to electrons through axial-vector interactions at a 4.4σ confidence level, mirror dark matter at 3.6σ, and luminous dark matter at 4.6σ.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
