Pions in isospin asymmetric matter and nuclear Drell-Yan

CL Korpa; AEL Dieperink

doi:10.1016/S0370-2693(98)01521-4

Pions in isospin asymmetric matter and nuclear Drell-Yan

CL Korpa^*
, AEL Dieperink

^*Corresponding author for this work

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

5 Citations (Scopus)

257 Downloads (Pure)

Abstract

Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant difference in positive and negative pion light-cone distributions is obtained leading to a nuclear enhancement of up antiquark distribution compared to the down antiquark one. This means that the sea-quark asymmetry in the free nucleon cannot be extracted model independently from an experiment on a neutron-rich nucleus

Original language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Physics Letters B
Volume	446
Issue number	1
DOIs	https://doi.org/10.1016/S0370-2693(98)01521-4
Publication status	Published - 14-Jan-1999

Keywords

isospin-asymmetric medium
Drell-Yan scattering
antiquark flavour asymmetry
DEEP-INELASTIC-SCATTERING
MESON CLOUD
DISTRIBUTIONS
BREAKING
FLAVOR
SEA

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Pions in isospin asymmetric matter and nuclear Drell-Yan scatteringFinal publisher's version, 99.4 KBLicence: Unspecified

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title = "Pions in isospin asymmetric matter and nuclear Drell-Yan",

abstract = "Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant difference in positive and negative pion light-cone distributions is obtained leading to a nuclear enhancement of up antiquark distribution compared to the down antiquark one. This means that the sea-quark asymmetry in the free nucleon cannot be extracted model independently from an experiment on a neutron-rich nucleus",

keywords = "isospin-asymmetric medium, Drell-Yan scattering, antiquark flavour asymmetry, DEEP-INELASTIC-SCATTERING, MESON CLOUD, DISTRIBUTIONS, BREAKING, FLAVOR, SEA",

author = "CL Korpa and AEL Dieperink",

year = "1999",

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doi = "10.1016/S0370-2693(98)01521-4",

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T1 - Pions in isospin asymmetric matter and nuclear Drell-Yan

AU - Korpa, CL

AU - Dieperink, AEL

PY - 1999/1/14

Y1 - 1999/1/14

N2 - Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant difference in positive and negative pion light-cone distributions is obtained leading to a nuclear enhancement of up antiquark distribution compared to the down antiquark one. This means that the sea-quark asymmetry in the free nucleon cannot be extracted model independently from an experiment on a neutron-rich nucleus

AB - Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant difference in positive and negative pion light-cone distributions is obtained leading to a nuclear enhancement of up antiquark distribution compared to the down antiquark one. This means that the sea-quark asymmetry in the free nucleon cannot be extracted model independently from an experiment on a neutron-rich nucleus

KW - isospin-asymmetric medium

KW - Drell-Yan scattering

KW - antiquark flavour asymmetry

KW - DEEP-INELASTIC-SCATTERING

KW - MESON CLOUD

KW - DISTRIBUTIONS

KW - BREAKING

KW - FLAVOR

KW - SEA

U2 - 10.1016/S0370-2693(98)01521-4

DO - 10.1016/S0370-2693(98)01521-4

M3 - Article

SN - 0370-2693

VL - 446

SP - 15

EP - 21

JO - Physics Letters B

JF - Physics Letters B

IS - 1

ER -

Pions in isospin asymmetric matter and nuclear Drell-Yan

Abstract

Keywords

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