1. Search for Inelastic Boosted Dark Matter with the ICARUS Detector at the Gran Sasso Underground National Laboratory
- Author
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Carranza, H., Yu, J., Brown, B., Blanchard, S., Chakraborty, S., Raut, R., Kim, D., Antonello, M., Baibussinov, B., Bellini, V., Benetti, P., Boffelli, F., Bonesini, 6 M., Bubak, A., Calligarich, E., Centro, S., Cesana, A., Cieslik, K., Cocco, A. G., Dabrowska, A., Dermenev, A., Falcone, A., Farnese, C., Fava, A., Ferrari, A., Gibin, D., Gninenko, S., Guglielmi, A., Holeczek, J., Janik, M., Kirsanov, M., Kisiel, J., Kochanek, I., Lagoda, J., Menegolli, A., Meng, G., Montanari, C., Otwinowski, S., Petta, C., Pietropaolo, F., Rappoldi, A., Raselli, G. L., Rossella, M., Rubbia, C., Sala, P., Scaramelli, A., Sergiampietri, F., Stefan, D., Szarska, M., Terrani, M., Torti, M., Tortorici, F., Varanini, F., Ventura, S., Vignoli, C., Wang, H., Yang, X., Zalewska, A., Zani, A., and Zaremba, K.
- Subjects
High Energy Physics - Experiment - Abstract
We present the result of a search for inelastic boosted dark matter using the data corresponding to an exposure of 0.13 kton$\cdot$year, collected by the ICARUS T-600 detector during its 2012--2013 operational period at the INFN Gran Sasso Underground National Laboratory. The benchmark boosted dark matter model features a multi-particle dark sector with a U(1)$'$ gauge boson, the dark photon. The kinetic mixing of the dark photon with the Standard Model photon allows for a portal between the dark sector and the visible sector. The inelastic boosted dark matter interaction occurs when a dark matter particle inelastically scatters with an electron in the ICARUS detector, producing an outgoing, heavier dark sector state which subsequently decays back down to the dark matter particle, emitting a dark photon. The dark photon subsequently couples to a Standard Model photon through kinetic mixing. The Standard Model photon then converts to an electron-positron pair in the detector. This interaction process provides a distinct experimental signature which consists of a recoil electron from the primary interaction and an associated electron-positron pair from the secondary vertex. After analyzing 4,134 triggered events, the search results in zero observed events. Exclusion limits are set in the dark photon mass and coupling ($m_X, \epsilon$) parameter space for several selected optimal boosted dark matter mass sets., Comment: 16 pages, 8 figures
- Published
- 2024