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Tavernier, S; De Lentdecker, G; Lambrecht, L; Delaere, C; Hadjiiska, R; Sultanov, G; Yuan, L; Monti, F; Song, J N; Rykaczewski, H; Elgammal, S; Tani, L; Tuominen, E; Sahin, M Ö; Busson, P; Lomidze, I; Merschmeyer, M; Bhattacharya, S; Campbell, A; Consuegra Rodríguez, S; Eckstein, D; Simonis, H J; Vellidis, K; Papakrivopoulos, I; Foudas, C; Major, P; Hajdu, C; Gomber, B; Kumar, M; Vats, D; Sharma, S; My, S; Cavallo, F R; Margoni, M; Barria, P; Santanastasio, F; Arneodo, M; Maselli, S; De Leo, K; Kim, D H; Gwak, P; Lee, S; Lee, S; Ha, S; Bubanja, I; Rodríguez Bouza, V; Duarte Campderros, J; Matorras Cuevas, P; Auzinger, G; Malgeri, L; Missiroli, M; Ristic, B; Tiwari, P C; Akgun, B; Uniyal, R; Vargas Hernandez, A M; Cosby, C; Jensen, F; Nash, W A; Wimpenny, S; Krutelyov, V; Tadel, M; Xiang, Y; Alison, J; Stenson, K; Chen, X; Wittich, P; Amram, O; Dickinson, J; Johnson, M; Papadimitriou, V; Stoynev, S; Koenig, E; Hagopian, V; Butalla, S; Merrit, A H; Tonjes, M B; Ye, Z; Dilsiz, K; Karaman, G; Mestvirishvili, A; Alcerro Alcerro, L F; Grove, D; Kovalskyi, D; Mohrman, K; Winer, B L; Paspalaki, G; Yigitbasi, E; de Barbaro, P; Chiarito, B; Stone, R; Thayil, S A; Muthumuni, S; Johns, W; Mondal, S; Sharma, V; Chekhovsky, V; Kim, V; Korenkov, V; Polikarpov, S
Physical review letters, 2024-Jan-26, Letnik: 132, Številka: 4Journal Article
A search for dark matter in events with a displaced nonresonant muon pair and missing transverse momentum is presented. The analysis is performed using an integrated luminosity of 138 fb^{-1} of proton-proton (pp) collision data at a center-of-mass energy of 13 TeV produced by the LHC in 2016-2018. No significant excess over the predicted backgrounds is observed. Upper limits are set on the product of the inelastic dark matter production cross section σ(pp→A^{'}→χ_{1}χ_{2}) and the decay branching fraction B(χ_{2}→χ_{1}μ^{+}μ^{-}), where A^{'} is a dark photon and χ_{1} and χ_{2} are states in the dark sector with near mass degeneracy. This is the first dedicated collider search for inelastic dark matter.
