Lambda polarization from unpolarized quark fragmentation

M Anselmino; D Boer; U D'Alesio; F Murgia

Lambda polarization from unpolarized quark fragmentation

M Anselmino^*, D Boer, U D'Alesio, F Murgia

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

88 Citations (Scopus)

Abstract

The long-standing problem of explaining the observed polarization of Lambda hyperons, inclusively produced in the high-energy collisions of unpolarized hadrons, is tackled by considering spin- and k(perpendicular to)-dependent quark-fragmentation functions. The data on Lambda 's and )over bar>'s produced in p-N processes are used to determine simple phenomenological expressions for these new "polarizing fragmentation functions," which describe the experiments remarkably well.

Original language	English
Article number	054029
Number of pages	9
Journal	Physical Review D
Volume	63
Issue number	5
Publication status	Published - 1-Mar-2001
Externally published	Yes

Keywords

SINGLE-SPIN ASYMMETRIES
INCLUSIVE PION-PRODUCTION
HYPERON POLARIZATION
HARD-SCATTERING
LAMBDA
PROTONS
MODEL
LEPTOPRODUCTION
DISTRIBUTIONS
COLLISIONS

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Cite this

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title = "Lambda polarization from unpolarized quark fragmentation",

abstract = "The long-standing problem of explaining the observed polarization of Lambda hyperons, inclusively produced in the high-energy collisions of unpolarized hadrons, is tackled by considering spin- and k(perpendicular to)-dependent quark-fragmentation functions. The data on Lambda 's and )over bar>'s produced in p-N processes are used to determine simple phenomenological expressions for these new {"}polarizing fragmentation functions,{"} which describe the experiments remarkably well.",

keywords = "SINGLE-SPIN ASYMMETRIES, INCLUSIVE PION-PRODUCTION, HYPERON POLARIZATION, HARD-SCATTERING, LAMBDA, PROTONS, MODEL, LEPTOPRODUCTION, DISTRIBUTIONS, COLLISIONS",

author = "M Anselmino and D Boer and U D'Alesio and F Murgia",

year = "2001",

month = mar,

day = "1",

language = "English",

volume = "63",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "AMER PHYSICAL SOC",

number = "5",

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TY - JOUR

T1 - Lambda polarization from unpolarized quark fragmentation

AU - Anselmino, M

AU - Boer, D

AU - D'Alesio, U

AU - Murgia, F

PY - 2001/3/1

Y1 - 2001/3/1

N2 - The long-standing problem of explaining the observed polarization of Lambda hyperons, inclusively produced in the high-energy collisions of unpolarized hadrons, is tackled by considering spin- and k(perpendicular to)-dependent quark-fragmentation functions. The data on Lambda 's and )over bar>'s produced in p-N processes are used to determine simple phenomenological expressions for these new "polarizing fragmentation functions," which describe the experiments remarkably well.

AB - The long-standing problem of explaining the observed polarization of Lambda hyperons, inclusively produced in the high-energy collisions of unpolarized hadrons, is tackled by considering spin- and k(perpendicular to)-dependent quark-fragmentation functions. The data on Lambda 's and )over bar>'s produced in p-N processes are used to determine simple phenomenological expressions for these new "polarizing fragmentation functions," which describe the experiments remarkably well.

KW - SINGLE-SPIN ASYMMETRIES

KW - INCLUSIVE PION-PRODUCTION

KW - HYPERON POLARIZATION

KW - HARD-SCATTERING

KW - LAMBDA

KW - PROTONS

KW - MODEL

KW - LEPTOPRODUCTION

KW - DISTRIBUTIONS

KW - COLLISIONS

M3 - Article

SN - 0556-2821

VL - 63

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 054029

ER -