Filamentation of a relativistic proton bunch in plasma by Verra, L, Amoedo, C, Torrado, N, Clairembaud, A, Mezger, J, Pannell, F, Pucek, J, van Gils, N, Bergamaschi, M, Zevi Della Porta, G, Lopes, N, Sublet, A, Turner, M, Gschwendtner, E, Muggli, P, Agnello, R, Ahdida, CC, Andrebe, Y, Apsimon, O, Apsimon, R, Arnesano, JM, Bencini, V, Blanchard, P, Burrows, PN, Buttenschön, B, Caldwell, A, Chung, M, Cooke, DA, Davut, C, Demeter, G, Dexter, AC, Doebert, S, Farmer, J, Fasoli, A, Fonseca, R, Furno, I, Granados, E, Granetzny, M, Graubner, T, Grulke, O, Guran, E, Henderson, J, Kedves, MÁ, Kraus, F, Krupa, M, Lefevre, T, Liang, L, Liu, S, Lotov, K, Pakuza, C, Ramjiawan, RL, Spear, B