Dark-photon search using data from CRESST-II Phase 2

作者：Angloher G; Bauer P; Bento A; Bucci C; Canonica L; Defay X; Erb A; v Feilitzsch F; Iachellini N Ferreiro; Gorla P; Guetlein A^*; Hauff D; Jochum J; Kiefer M; Kluck H; Kraus H; Lanfranchi J C; Loebell J; Mancuso M; Muenster A; Pagliarone C; Petricca F; Potzel W; Proebst F; Puig R; Reindl F; Schaeffner K; Schieck J; Schoenert S; Seidel W; Stodolsky L; Strandhagen C; Strauss R; Tanzke A; Trinh Thi H H; Tuerkoglu C; Uffinger M; Ulrich A; Usherov I

来源：European Physical Journal C, 2017, 77(5): 299.

DOI：10.1140/epjc/s10052-017-4878-6

Identifying the nature and origin of dark matter is one of the major challenges for modern astro and particle physics. Direct dark-matter searches aim at an observation of dark-matter particles interacting within detectors. The focus of several such searches is on interactions with nuclei as provided e.g. by weakly interacting massive particles. However, there is a variety of dark-matter candidates favoring interactions with electrons rather than with nuclei. One example are dark photons, i.e., long-lived vector particles with a kinetic mixing to standard-model photons. In this work we present constraints on this kinetic mixing based on data from CRESST-II Phase 2 corresponding to an exposure before cuts of 52 kg-days. These constraints improve the existing ones for dark-photon masses between 0.3 and 0.7 keV/c(2).

• 出版日期2017-5-10