Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/81310
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Type: Journal article
Title: Revealing dressed quarks via the proton's charge distribution
Author: Cloet, I.
Roberts, C.
Thomas, A.
Citation: Physical Review Letters, 2013; 111(10):1-5
Publisher: American Physical Soc
Issue Date: 2013
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
Ian C. Cloët, Craig D. Roberts, and Anthony W. Thomas
Abstract: The proton is arguably the most fundamental of nature’s readily detectable building blocks. It is at the heart of every nucleus and has never been observed to decay. It is nevertheless a composite object, defined by its valence-quark content: u+u+d—i.e., two up (u) quarks and one down (d) quark; and the manner by which they influence, inter alia, the distribution of charge and magnetization within this bound state. Much of novelty has recently been learned about these distributions; and it now appears possible that the proton’s momentum-space charge distribution possesses a zero. Experiments in the coming decade should answer critical questions posed by this and related advances; we explain how such new information may assist in charting the origin and impact of key emergent phenomena within the strong interaction. Specifically, we show that the possible existence and location of a zero in the proton’s electric form factor are a measure of nonperturbative features of the quark-quark interaction in the standard model, with particular sensitivity to the running of the dressed-quark mass.
Keywords: Building blockes
Composite objects
Critical questions
Electric forms
Emergent phenomenon
Nonperturbative
Strong interaction
The standard model
Rights: © 2013 American Physical Society
DOI: 10.1103/PhysRevLett.111.101803
Grant ID: http://purl.org/au-research/grants/arc/FL0992247
Published version: http://dx.doi.org/10.1103/physrevlett.111.101803
Appears in Collections:Aurora harvest
Chemistry and Physics publications

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