A Simple explanation of hyperon polarization at high p(T)

Barni, R.; Preparata, G.; Ratcliffe, P.G.

doi:10.1016/0370-2693(92)90836-S

A Simple explanation of hyperon polarization at high p(T)

R. Barni
(
- Milan U.
)
,
G. Preparata
(
- Milan U. and
- INFN, Milan
)
,
P.G. Ratcliffe
(
- INFN, Milan
)

Oct 28, 1991

5 pages

Published in:

Phys.Lett.B 296 (1992) 251-255

Published: 1992

DOI:

10.1016/0370-2693(92)90836-S

Report number:

MITH-91-21

View in:

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Abstract: (Elsevier)

We present the first truly dynamical calculation of the single transverse-spin asymmetry for the process pN→B ↑ +X, where B is Λ 0 or Σ 0, ± observed at large angles. After showing that the triple-Regge model gives a good representation of the inclusive un polarized cross sections, the polarization is calculated by considering the hyperon to emerge in the final state either directly or as the result of virtual dissociation of a parent baryon. Our results reproduce very well both the measured p T and x F dependence of the hyperon polarization.

p nucleon: inclusive reaction
Lambda: hadroproduction
hadroproduction: Lambda
Sigma: hadroproduction
hadroproduction: Sigma
Sigma(1385): hadroproduction
hadroproduction: Sigma(1385)
production: wide-angle
wide-angle: production
transverse momentum: high

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