Publications
Publication Information
| Title | Accurate Determination of the Neutron Skin Thickness of $^{208}$Pb through Parity-Violation in Electron Scattering |
| Authors | Devi Adhikari, Hisham Albataineh, Darko Androic, Konrad Aniol, David Armstrong, Todd Averett, Scott Barcus, Vincenzo Bellini, Rakitha Beminiwattha, Jay Benesch, Hem Bhatt, Devaki Bhatta Pathak, Deepak Bhetuwal, Brynne Blaikie, Quinn Campagna, Alexandre Camsonne, Gordon Cates, Yufan Chen, Cameron Clarke, Juan Cornejo, Silviu Covrig Dusa, Provakar Datta, Dipangkar Dutta, Catherine Feldman, Eric Fuchey, Ciprian Gal, David Gaskell, Thir Narayan Gautam, Carlos Ayerbe Gayoso, Michael Gericke, Chandan Ghosh, Iris Halilovic, Jens-Ole Hansen, Florian Hauenstein, William Henry, Charles Horowitz, Christopher Jantzi, Siyu Jian, S. Johnston, Donald Jones, Bishnu Karki, Sumudu Katugampola, Cynthia Keppel, Paul King, Eric King, Matthew Knauss, Krishna Kumar, Tyler Kutz, Nathaniel Lashley-Colthirst, Garrett Leverick, Hanjie Liu, Nilanga Liyanage, Simona Malace, Juliette Mammei, Russell Mammei, Michael McCaughan, Dustin McNulty, David Meekins, Carrington Metts, Robert Michaels, M. Mouli Mondal, James Napolitano, Amrendra Narayan, Dmitrii Nikolaev, Mohamed Nuhman Hashir Rashad, Victoria Owen, Caryn Palatchi, Jie Pan, Bishnu Pandey, Kent Paschke, Marisa Petrusky, Mark Pitt, Sachinthani Premathilake, Andrew Puckett, Brian Quinn, Robert Radloff, Sakib Rahman, Anuruddha Rathnayake Mudiyanselage, B. Reed, Paul Reimer, Ryan Richards, Seamus Riordan, Yves Roblin, Sebastian Seeds, Albert Shahinyan, Paul Souder, Liguang Tang, Michaela Thiel, Ye Tian, Guido Maria Urciuoli, Ezekiel Wertz, Bogdan Wojtsekhowski, Bradley Yale, Tao Ye, Ashley Yoon, Allison Zec, Weibin Zhang, Jinlong Zhang, Xiaochao Zheng |
| JLAB number | JLAB-PHY-21-3420 |
| LANL number | arXiv:2102.10767 |
| Other number | DOE/OR/23177-5238 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review Letters Volume 126 Page(s) 172502 Refereed | |
| Publication Abstract: | We report a precision measurement of the parity-violating asymmetry $A_{PV}$ in the elastic scattering of longitudinally polarized electrons from $^{208}$Pb. We measure $A_{PV}=550\pm 16 {\rm (stat)}\pm 8\ {\rm (syst)}$ parts per billion, leading to an extraction of the neutral weak form factor $F_W(Q^2 = 0.00616\ {\rm GeV}^2) = 0.368 \pm 0.013$. Combined with our previous measurement, the extracted neutron skin thickness is $R_n-R_p=0.283 \pm 0.071$~fm. The result also yields the first significant direct measurement of the interior weak density of $^{208}$Pb: $\rho^0_W = -0.0796\pm0.0036\ {\rm (exp.)}\pm0.0013\ {\rm (theo.)}\ {\rm fm}^{-3}$ leading to the interior baryon density $\rho^0_b = 0.1480\pm0.0036\ {\rm (exp.)}\pm0.0013\ {\rm (theo.)}\ {\rm fm}^{-3}$. 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. |
| Experiment Numbers: | E12-11-101 |
| Group: | Hall A |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevLett.126.172502 |
| Accepted Manuscript: | 2102.10767.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |