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Amorim, A; Aushev, V; Baghshetsyan, R; Barsuk, S; Barsukova, O; Bassetti, V; Beck, M; Belkov, A; Belotelov, I; Berkhan, K; Bertin, A; Broemmelsiek, D; Bruinsma, M; Carvalho, J; Christensen, A; Dam, M; Danielsen, KM; Danilov, M; De Castro, S; Dehmelt, K; Dolgoshein, B; Dong, X; Dujmic, D; Eckmann, R; Eisele, F; Emeliyanov, D; Feuerstack-Raible, M; Galli, D; Garcia, A; Gerndt, KEK; Giacobbe, B; Glass, J; Goloubkov, D; Golutvin, I; Goulart, DC; Hamacher, T; Hast, C; Hausmann, S; Hofner, K; Hohlmann, M; Husemann, U; Igonkina, O; Jiang, C; Ke, Z; Kim, H; Kochetkov, V; Krauss, C; Kvaratskheliia, T; Lange, A; Lau, K; Liu, YQ; Marconi, U; Masciocchi, S; Medinnis, M; Mevius, M; Michetti, A; Negodaev, M; Negri, I; Padilla, C; Pavlenko, Y; Peralta, D; Pose, A; Pylypchenko, Y; Pyrlik, J; Ramachandran, S; Ratnikov, F; Reeves, K; Robmann, P; Rothe, C; Rusinov, V; Rybnikov, V; Saadi-Ludemannm, F; Sang, M; Saveliev, V; Sbrizzi, A; Schultz, HD; Schwingenheuer, B; Semprini-Cesari, N; Shiu, J; Spengler, J; Spratte, S; Stegmann, C; Sun, F; Takach, S; Tesch, N; Truol, P; Vassiliev, Y; Villa, M; Vukotic, I; Wagner, W; Wahlberg, H; Walter, T; Wegener, D; Werthenbach, U; Xella-Hansen, S; Yang, J; Zaitsev, Y; Zeuner, T; Zhu, Z; Zoccoli, A
The European physical journal. C, Particles and fields, 2003, Letnik: 26, Številka: 3Journal Article
Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via inclusive bottom quark decays into J/psi by exploiting the longitudinal separation of J/psi --> l(+)l(-) decay vertices from the primary proton-nucleus interaction. Both e(+)e(-) and mu(+)mu(-) channels have been reconstructed and the combined analysis yields the cross section sigma(b (b) over bar) = 32(-12)(+14)(stat) (+6)(-7)(sys) nb/nucleon.
