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Titolo:
Polarization in hadronic Lambda hyperon production and chiral-odd twist-3 distribution - art. no. 034019
Autore:
Kanazawa, Y; Koike, Y;
Indirizzi:
Niigata Univ, Dept Phys, Niigata 9502181, Japan Niigata Univ Niigata Japan 9502181 iv, Dept Phys, Niigata 9502181, Japan
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 3, volume: 6403, anno: 2001,
pagine: 4019 -
SICI:
0556-2821(20010801)6403:3<4019:PIHLHP>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSVERSE-SPIN ASYMMETRIES; TO-LEADING-ORDER; PION-PRODUCTION; QUANTUM CHROMODYNAMICS; INCLUSIVE PRODUCTION; 800-GEV/C PROTONS; BARYON PRODUCTION; HARD-SCATTERING; QCD; P-UP-ARROW-P->PI-X;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Kanazawa, Y Niigata Univ, Dept Phys, Niigata 9502181, Japan Niigata Univ Niigata Japan 9502181 s, Niigata 9502181, Japan
Citazione:
Y. Kanazawa e Y. Koike, "Polarization in hadronic Lambda hyperon production and chiral-odd twist-3 distribution - art. no. 034019", PHYS REV D, 6403(3), 2001, pp. 4019

Abstract

Polarization of the A hyperon produced with a large transverse momentum inunpolarized nucleon-nucleon collisions is analyzed in the framework of QCDfactorization. We focus on the mechanism in which the soft-gluon componentof the chiral-odd spin-independent twist-3 quark distribution E-F(x,x) becomes a source of the polarized quark fragmenting into the polarized A. Our simple model estimate for this contribution indicates that it gives rise toa significant A polarization at large x(F). This is in parallel with the observation that the soft gluon pole mechanism gives rise to a large single transverse spin asymmetry in pion production at x(F)-->1.

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Documento generato il 22/01/20 alle ore 18:35:21