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Evidence for Diquarks in Lattice QCD

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 30 Nov 2006Embargo end date: 01 Jan 2006 Cyprus, United Kingdom English Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 97 (issn: 0031-9007, eissn: 1079-7114, Copyright policy )
Authors: Alexandrou, Constantia; De Forcrand, Ph; Lucini, B.; Alexandrou, Constantia; De Forcrand, Ph; Lucini, B.;

doi: 10.1103/physrevlett.97.222002 , 10.48550/arxiv.hep-lat/0609004

pmid: 17155796

arXiv: http://arxiv.org/abs/hep-lat/0609004

Evidence for Diquarks in Lattice QCD

Abstract

Diquarks may play an important role in hadron spectroscopy, baryon decays and color superconductivity. We investigate the existence of diquark correlations in lattice QCD by considering systematically all the lowest energy diquark channels in a color gauge-invariant setup. We measure mass differences between the various channels and show that the positive parity scalar diquark is the lightest. Quark-quark correlations inside the diquark are clearly seen in this channel, and yield a diquark size of order 1 fm.

Version as published in Phys. Rev. Lett.97, 222002,2006; 4 pages, 5 figures

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Cyprus, United Kingdom
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Keywords

Superconductivity, Nuclear Theory, Diquark correlations, High Energy Physics - Lattice (hep-lat), Lattice constants, Elementary particles, Color, FOS: Physical sciences, Molecular dynamics, Diquark channels, Nuclear Theory (nucl-th), High Energy Physics - Lattice, Correlation methods, Electron energy levels, Quark-quark correlations

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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 91
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    		 Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    		 Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
91
Top 10%
Top 10%
Top 10%
Green
bronze