Analyzing powers in and determination of pion S and P wave amplitudes near threshold

Autor:	W. W. Jacobs, J. G. Hardie, W. W. Daehnick, D. J. Tedeschi, P. V. Pancella, C. C. Foster, R. W. Flammang, T. Rinckel, S. A. Dytman, T. Vrana, E. J. Stephenson, W. K. Brooks, R. A. Thompson
Rok vydání:	1998
Předmět:	Physics Nuclear physics Nuclear and High Energy Physics Cross section (physics) Near threshold Pion Amplitude Partial wave analysis P wave
Zdroj:	Physics Letters B. 423:213-218
ISSN:	0370-2693
DOI:	10.1016/s0370-2693(98)00079-3
Popis:	Analyzing powers were measured and used to quantify the observation that s-wave processes dominate near threshold. Values of Ay(θπ,φπ=0°) are presented for η values of 0.22, 0.42 and 0.50. Maximum analyzing powers AN0 are equal to −0.13, −0.24, and −0.28, respectively. A partial wave analysis, made possible by the new analyzing powers and available cross sections, indicates that the s-wave contribution to the cross section constitutes about 91% of the total cross section at η=0.22, or 300 MeV. It decreases to about 75% for η=0.5.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9355edd464b7fdf8a41fe3a776d66159 https://doi.org/10.1016/s0370-2693(98)00079-3 Zobrazit plný text záznamu Full Text from ScienceDirect