A measurement of Lambda polarization in inclusive production by Sigma(-) of 340 GeV/c in C and Cu targets

Adamovich, M.I. et al. (2004) A measurement of Lambda polarization in inclusive production by Sigma(-) of 340 GeV/c in C and Cu targets. European Physical Journal C, 32(2), 221 -228. (doi: 10.1140/epjc/s2003-01357-3)

Abstract

We have measured the polarization of Sigma(-) beam of 340 GeV/c momentum in nuclear targets. From a sample of 9.5 millions of identified Lambda decays, polarizations were determined in the range x(F) gt 0.1 and p(t)less than or equal to1.6 GeV/c . The polarization w.r.t. the production normal is mainly positive for x(F)greater than or equal to0.3. At fixed values of x(F) , it increases with p(t) to a maximum between p(t)=0.5 and p(t)=1 GeV/c , and then decreases to zero or even negative values, in sharp contrast to the plateau above p(t)=1 GeV/c observed in inclusive Lambda production by protons.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Rosner, Professor Guenther
• Authors: Adamovich, M.I., Alexandrov, Y.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: European Physical Journal C
• Publisher: Springer
• ISSN: 1434-6044
• ISSN (Online): 1434-6052