Two related issues are discussed, which might be easily explored by present
and future COMPASS experiments. The first one deals with the new world of
transversity, the fundamental polarized parton distribution so far totally
unknown. The second issue concerns Lambda production in polarized
semi-inclusive processes, with a measurement of the Lambda polarization, which
might give novel information on distribution and fragmentation properties of
polarized partons. In case of transverse polarization the detection of Lambda's
gives access to a new way of measuring transversities. Also the interesting
case of Lambda polarization in unpolarized processes is discussed.Comment: 9 pages, 4 figures, talk delivered at the Workshop on Future Physics
@ COMPASS, Sept. 26-27, 2002, CER
