Search for a Higgs portal scalar decaying to electron-positron pairs in the MicroBooNE detector
Creators: name: MicroBooNE Collaboration
name: Abratenko, P.
name: An, R.
name: Anthony, J.
name: Asaadi, J.
name: Ashkenazi, A.
name: Balasubramanian, S.
name: Baller, B.
name: Barnes, C.
name: Barr, G.
name: Basque, V.
name: Bathe-Peters, L.
name: Rodrigues, O. Benevides
name: Berkman, S.
name: Bhanderi, A.
name: Bhat, A.
name: Bishai, M.
name: Blake, A.
name: Bolton, T.
name: Book, J. Y.
name: Camilleri, L.
name: Caratelli, D.
name: Terrazas, I. Caro
name: Fernandez, R. Castillo
name: Cavanna, F.
name: Cerati, G.
name: Chen, Y.
name: Cianci, D.
name: Conrad, J. M.
name: Convery, M.
name: Cooper-Troendle, L.
name: Crespo-Anadon, J. I.
name: Del Tutto, M.
name: Dennis, S. R.
name: Devitt, D.
name: Diurba, R.
name: Dorrill, R.
name: Duffy, K.
name: Dytman, S.
name: Eberly, B.
name: Ereditato, A.
name: Evans, J. J.
name: Fine, R.
name: Aguirre, G. A. Fiorentini
name: Fitzpatrick, R. S.
name: Fleming, B. T.
name: Foppiani, N.
name: Franco, D.
name: Furmanski, A. P.
name: Garcia-Gamez, D.
name: Gardiner, S.
name: Ge, G.
name: Gollapinni, S.
name: Goodwin, O.
name: Gramellini, E.
name: Green, P.
name: Greenlee, H.
name: Gu, W.
name: Guenette, R.
name: Guzowski, P.
name: Hagaman, L.
name: Hall, E.
name: Hen, O.
name: Horton-Smith, G. A.
name: Hourlier, A.
name: Itay, R.
name: James, C.
name: Ji, X.
name: Jiang, L.
name: Jo, J. H.
name: Johnson, R. A.
name: Jwa, Y. J.
name: Kamp, N.
name: Kaneshige, N.
name: Karagiorgi, G.
name: Ketchum, W.
name: Kirby, M.
name: Kobilarcik, T.
name: Kreslo, I.
name: LaZur, R.
name: Lepetic, I.
name: Li, K.
name: Li, Y.
name: Lin, K.
name: Littlejohn, B. R.
name: Louis, W. C.
name: Luo, X.
name: Manivannan, K.
name: Mariani, C.
name: Marsden, D.
name: Marshall, J.
name: Caicedo, D. A. Martinez
name: Mason, K.
name: Mastbaum, A.
name: McConkey, N.
name: Meddage, V.
name: Mettler, T.
name: Miller, K.
name: Mills, J.
name: Mistry, K.
name: Mogan, A.
name: Mohayai, T.
name: Moon, J.
name: Mooney, M.
name: Moor, A. F.
name: Moore, C. D.
name: Lepin, L. Mora
name: Mousseau, J.
name: Murphy, M.
name: Naples, D.
name: Navrer-Agasson, A.
name: Neely, R. K.
name: Nowak, J.
name: Nunes, M.
name: Palamara, O.
name: Paolone, V.
name: Papadopoulou, A.
name: Papavassiliou, V.
name: Pate, S. F.
name: Paudel, A.
name: Pavlovic, Z.
name: Piasetzky, E.
name: Ponce-Pinto, I.
name: Prince, S.
name: Qian, X.
name: Raaf, J. L.
name: Radeka, V.
name: Rafique, A.
name: Reggiani-Guzzo, M.
name: Ren, L.
name: Rice, L. C. J.
name: Rochester, L.
name: Rondon, J. Rodriguez
name: Rogers, H. E.
name: Rosenberg, M.
name: Ross-Lonergan, M.
name: Scanavini, G.
name: Schmitz, D. W.
name: Schukraft, A.
name: Seligman, W.
name: Shaevitz, M. H.
name: Sharankova, R.
name: Shi, J.
name: Siegel, H.
name: Sinclair, J.
name: Smith, A.
name: Snider, E. L.
name: Soderberg, M.
name: Soldner-Rembold, S.
name: Spentzouris, P.
name: Spitz, J.
name: Stancari, M.
name: John, J. St.
name: Strauss, T.
name: Sutton, K.
name: Sword-Fehlberg, S.
name: Szelc, A. M.
name: Tagg, N.
name: Tang, W.
name: Terao, K.
name: Thorpe, C.
name: Totani, D.
name: Toups, M.
name: Tsai, Y. -T.
name: Uchida, M. A.
name: Usher, T.
name: Van De Pontseele, W.
name: Viren, B.
name: Weber, M.
name: Wei, H.
name: Williams, Z.
name: Wolbers, S.
name: Wongjirad, T.
name: Wospakrik, M.
name: Wresilo, K.
name: Wright, N.
name: Wu, W.
name: Yandel, E.
name: Yang, T.
name: Yarbrough, G.
name: Yates, L. E.
name: Zeller, G. P.
name: Zennamo, J.
name: Zhang, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present a search for the decays of a neutral scalar boson produced by kaons decaying at rest, in the context of the Higgs portal model, using the MicroBooNE detector. We analyze data triggered in time with the Fermilab NuMI neutrino beam spill, with an exposure of $1.93\times10^{20}$ protons on target. We look for monoenergetic scalars that come from the direction of the NuMI hadron absorber, at a distance of 100 m from the detector, and decay to electron-positron pairs. We observe one candidate event, with a Standard Model background prediction of $1.9\pm0.8$. We set an upper limit on the scalar-Higgs mixing angle of $θ
description: 7 pages, 4 figures; v2: version accepted by Phys. Rev. Lett