arXiv:hep-ph/0010291·v1·High Energy Physics — Phenomenology
Lambda polarization in unpolarized hadron reactions
M. Anselmino (1)🇮🇹 · D. Boer (2)🇺🇸 · U. D'Alesio (3)🇮🇹 · F. Murgia (3) ((1) University and INFN, Torino, Italy, (2) RIKEN-BNL Research Center, (3) University and INFN, Cagliari, Italy)🇮🇹
Abstract
The transverse polarization observed in the inclusive production of Lambda hyperons in the high energy collisions of unpolarized hadrons is tackled by considering a new set of spin and kT dependent quark fragmentation functions. Simple phenomenological expressions for these new ``polarizing fragmentation functions'' are obtained by a fit of the data on Lambda's and Lambdabar's produced in p-N processes.
Comments: 7 pages, 3 figures, uses epsfig.sty. Talk delivered by U. D'Alesio at the International Workshop "Symmetries and Spin, Praha-Spin-2000", July 17-22, 2000, Prague