Report

Inclusive $\\mathrm{V^0}$ production cross sections from 920 GeV fixed target proton-nucleus collisions

Zhu, Z., Yang, J., Saadi-Ludemann, F., Riu, I., Broemmelsiek, D., Mankel, R., Pleier, Marc-Andre, Kaoukher, A., Robmann, P., Vitale, A., Tesch, N., Nowak, S., Schwitters, R., Fabbri, L., Ivarsson, J., Wanke, R., Negri, I., Balagura, V., Schwanke, U., Cruse, C., Schmelling, M., Faccioli, P., Zimmermann, R., Emelyanov, D., Oest, T., Fuljahn, T., Buran, T., Kreuzer, P., Schwingenheuer, B., Padilla, C., Schultz, H. D., Garcia, A., Legrand, I., Buchler, M., Glebe, T., Kim, H., Spighi, R., Rieling, J., Dehmelt, K., Sciacca, F., Shiu, J., Lanyov, A., Gradl, S., Stegmann, C., Bassetti, V., Wurth, R., Pyrlik, J., Krizan, P., Potashnikova, I., Rothe, C., Zech, Gunter, Werthenbach, U., Buchholz, P., Capeans, M., Popov, V., Manner, R., Itterbeck, H., Harr, R., Zoccoli, A., Egorychev, V., Sbrizzi, A., Michetti, A., Adams, M., Bauer, T. S., Bocker, M., Abt, I., Masciocchi, S., Liu, Y. Q., Brauer, M., Jia, Y., Kvaratskheliya, T., Fourletov, S., Bruinsma, M., Bagaturiya, Yu, Karpenko, N., Igonkina, O., Arefev, A., Goloubkov, D., Belotelov, I., Belyaev, I., Hohlmann, M., Seybold, L., Walter, M., Rosen, J., Piccinini, M., Truoel, Peter, Van Eldik, C., Wahlberg, H., Jiang, C., K

2003

Overview

Inclusive differential cross sections $d\\sigma_{pA}/dx_F$ and $d\\sigma_{pA}/dp_t^2$ for the production of \\kzeros, \\lambdazero, and \\antilambda particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The incident beam energy is 920 GeV, corresponding to $\\sqrt {s} = 41.6$ GeV in the proton-nucleon system. The ratios of differential cross sections \\rklpa and \\rllpa are measured to be $6.2\\pm 0.5$ and $0.66\\pm 0.07$, respectively, for \\xf $\\approx-0.06$. No significant dependence upon the target material is observed. Within errors, the slopes of the transverse momentum distributions $d\\sigma_{pA}/dp_t^2$ also show no significant dependence upon the target material. The dependence of the extrapolated total cross sections $\\sigma_{pA}$ on the atomic mass $A$ of the target material is discussed, and the deduced cross sections per nucleon $\\sigma_{pN}$ are compared with results obtained at other energies.

• Publisher: Deutsches Elektronen-Synchrotron, DESY, Hamburg
• Subject: aluminum / Antilambda / carbon / channel cross section: mass number / DESY HERA Stor / differential cross section: ratio / differential cross section: x-dependence / experimental results / GeV / HERA-B / K0(S) / Lambda / p nucleus: inclusive reaction / strange particle: hadroproduction / titanium / transverse momentum dependence / tungsten