Measurement of the polarization parameter in pp elastic scattering at 150 GeV/<em>c</em>期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Measurement of the polarization parameter in pp elastic scattering at 150 GeV/c

Authors:	G. Fidecaro M. Fidecaro L. Lanceri S. Nurushev L. Piemontese Ch. Poyer V. Solovianov A. Vascotto F. Gasparini A. Meneguzzo M. Posocco C. Voci R. Birsa F. Bradamante M. Giorgi A. Penzo P. Schiavon A. Villari H. Stradner

Affiliation:	CERN, Geneva, Switzerland;Instituto di Fisica della Università and INFN, Padova, Italy;Istituto di Fisica della Università and INFN, Trieste, Italy;Institut für Hochenergiephysik der Osterreichischen Akademie der Wissenschaften, Vienna, Austria

Abstract:	The polarization parameter in pp elastic scattering at 150 GeV/c, and in the momentum transfer interval 0.4 ? ?t ? 3.0 GeV², has been measured in an MWPC and scintillation counter experiment at the CERN SPS using a polarized proton target. The polarization is decreasing steadily from zero to ≈ ? 10% in the range 0.4 < ?t < 1.3 GeV²; for higher \|t\| the data suggests a change of sign. Results are also given for the differential cross section, which exhibits a small dip at ?t = (1.46 ± 0.01) GeV.

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