@article{6158d93b5573410286e13a6da232c2d5,
title = "Accurate Determination of the Neutron Skin Thickness of Pb 208 through Parity-Violation in Electron Scattering",
abstract = "We report a precision measurement of the parity-violating asymmetry APV in the elastic scattering of longitudinally polarized electrons from Pb208. We measure APV=550±16(stat)±8(syst) parts per billion, leading to an extraction of the neutral weak form factor FW(Q2=0.00616 GeV2)=0.368±0.013. Combined with our previous measurement, the extracted neutron skin thickness is Rn-Rp=0.283±0.071 fm. The result also yields the first significant direct measurement of the interior weak density of Pb208: ρW0=-0.0796±0.0036(exp)±0.0013(theo) fm-3 leading to the interior baryon density ρb0=0.1480±0.0036(exp)±0.0013(theo) fm-3. The measurement accurately constrains the density dependence of the symmetry energy of nuclear matter near saturation density, with implications for the size and composition of neutron stars.",
author = "{(PREX Collaboration)} and D. Adhikari and H. Albataineh and D. Androic and K. Aniol and Armstrong, {D. S.} and T. Averett and {Ayerbe Gayoso}, C. and S. Barcus and V. Bellini and Beminiwattha, {R. S.} and Benesch, {J. F.} and H. Bhatt and {Bhatta Pathak}, D. and D. Bhetuwal and B. Blaikie and Q. Campagna and A. Camsonne and Cates, {G. D.} and Y. Chen and C. Clarke and Cornejo, {J. C.} and {Covrig Dusa}, S. and P. Datta and A. Deshpande and D. Dutta and C. Feldman and E. Fuchey and C. Gal and D. Gaskell and T. Gautam and M. Gericke and C. Ghosh and I. Halilovic and Hansen, {J. O.} and F. Hauenstein and W. Henry and Horowitz, {C. J.} and C. Jantzi and S. Jian and S. Johnston and Jones, {D. C.} and B. Karki and S. Katugampola and C. Keppel and King, {P. M.} and King, {D. E.} and M. Knauss and Kumar, {K. S.} and T. Kutz and P. Souder",
note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",
year = "2021",
month = apr,
day = "27",
doi = "10.1103/PhysRevLett.126.172502",
language = "English (US)",
volume = "126",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "17",
}