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Power Of Two

Title: Power Of Two.
Name(s): Piekarewicz, J., author
Linero, A. R., author
Giuliani, P., author
Chicken, E., author
Type of Resource: text
Genre: Text
Date Issued: 2016-09-15
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Background: Besides its intrinsic value as a fundamental nuclear-structure observable, the weak-charge density of Pb-208-a quantity that is closely related to its neutron distribution-is of fundamental importance in constraining the equation of state of neutron-rich matter. Purpose: To assess the impact that a second electroweak measurement of the weak-charge form factor of Pb-208 may have on the determination of its overall weak-charge density. Methods: Using the two putative experimental values of the form factor, together with a simple implementation of Bayes' theorem, we calibrate a theoretically sound-yet surprisingly little known-symmetrized Fermi function, that is characterized by a density and form factor that are both known exactly in closed form. Results: Using the charge form factor of Pb-208 as a proxy for its weak-charge form factor, we demonstrate that using only two experimental points to calibrate the symmetrized Fermi function is sufficient to accurately reproduce the experimental charge form factor over a significant range of momentum transfers. Conclusions: It is demonstrated that a second measurement of the weak-charge form factor of Pb-208 supplemented by a robust theoretical input in the form of the symmetrized Fermi function would place significant constraints on the neutron distribution of Pb-208. In turn, such constraints will become vital in the interpretation of hadronic experiments that will probe the neutron-rich skin of exotic nuclei at future radioactive beam facilities.
Identifier: FSU_libsubv1_wos_000383149400001 (IID), 10.1103/PhysRevC.94.034316 (DOI)
Keywords: constraints, dense matter, elastic-scattering, electron-scattering, equation-of-state, mass, neutron-stars, nuclei, radii, x-ray binaries
Publication Note: The publisher's version of record is available at
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Owner Institution: FSU
Is Part Of: Physical Review C.
Issue: iss. 3, vol. 94

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Piekarewicz, J., Linero, A. R., Giuliani, P., & Chicken, E. (2016). Power Of Two. Physical Review C. Retrieved from