Measurement of the Neutron Radius of [superscript 208]Pb through Parity Violation in Electron Scattering

Abrahamyan, S.; Ahmed, Z.; Albataineh, H.; Aniol, K.; Armstrong, D.; Armstrong, W.; Averett, T.; Babineau, B.; Barbieri, A.; Bellini, V.; Beminiwattha, R.; Benesch, J.; Benmokhtar, F.; Bielarski, T.; Boeglin, W.; Camsonne, A.; Canan, M.; Carter, P.; Cates, G.; Chen, C.; Chen, J.-P.; Hen, O.; Cusanno, F.; Dalton, M.; De Leo, R.; de Jager, K.; Deconinck, W.; Decowski, P.; Deng, X.; Deur, A.; Dutta, D.; Etile, A.; Flay, D.; Franklin, G.; Friend, M.; Frullani, S.; Fuchey, E.; Garibaldi, F.; Gasser, E.; Gilman, R.; Giusa, A.; Glamazdin, A.; Gomez, J.; Grames, J.; Gu, C.; Hansen, O.; Hansknecht, J.; Higinbotham, D.; Holmes, R.; Holmstrom, T.; Horowitz, C.; Hoskins, J.; Huang, J.; Hyde, C.; Itard, F.; Jen, C.-M.; Jensen, E.; Jin, G.; Johnston, S.; Kelleher, A.; Kliakhandler, K.; King, P.; Kowalski, S.; Kumar, K.; Leacock, J.; Leckey, J.; Lee, J.; LeRose, J.; Lindgren, R.; Liyanage, N.; Lubinsky, N.; Mammei, J.; Mammoliti, F.; Margaziotis, D.; Markowitz, P.; McCreary, A.; McNulty, D.; Mercado, L.; Meziani, Z.-E.; Michaels, R.; Mihovilovic, M.; Muangma, N.; Muñoz-Camacho, C.; Nanda, S.; Nelyubin, V.; Nuruzzaman, N.; Oh, Y.; Palmer, A.; Parno, D.; Paschke, K.; Phillips, S.; Poelker, B.; Pomatsalyuk, R.; Posik, M.; Puckett, A.; Quinn, B.; Rakhman, A.; Reimer, P.; Riordan, S.; Rogan, P.; Ron, G.; Russo, G.; Saenboonruang, K.; Saha, A.; Sawatzky, B.; Shahinyan, A.; Silwal, R.; Sirca, S.; Slifer, K.; Solvignon, P.; Souder, P.; Sperduto, M.; Subedi, R.; Suleiman, R.; Sulkosky, V.; Sutera, C.; Tobias, W.; Troth, W.; Urciuoli, G.; Waidyawansa, B.; Wang, D.; Wexler, J.; Wilson, R.; Wojtsekhowski, B.; Yan, X.; Yao, H.; Ye, Y.; Ye, Z.; Yim, V.; Zana, L.; Zhan, X.; Zhang, J.; Zhang, Y.; Zheng, X.; Zhu, P.

Author(s)

Deconinck, Wouter; Huang, J.; Kelleher, Aidan Michael; Kowalski, Stanley B.; Muangma, Navaphon; ... Show more

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Measurement of the Neutron Radius of 208Pb through Parity Violation in Electron Scattering

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Abstract

We report the first measurement of the parity-violating asymmetry A[subscript PV] in the elastic scattering of polarized electrons from [superscript 208]Pb. A[subscript PV] is sensitive to the radius of the neutron distribution (R[subscript n]). The result A[subscript PV]=0.656±0.060(stat)±0.014(syst) ppm corresponds to a difference between the radii of the neutron and proton distributions R[subscript n]-R[subscript p]=0.33[subscript -0.18][superscript +0.16] fm and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.

Date issued

2012-03

URI

http://hdl.handle.net/1721.1/70506

Department

Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science

Journal

Physical Review Letters

Publisher

American Physical Society

Citation

Abrahamyan, S. et al. “Measurement of the Neutron Radius of ^{208}Pb Through Parity Violation in Electron Scattering.” Physical Review Letters 108.11 (2012): Web. 4 May 2012. © 2011 American Physical Society

Version: Final published version

ISSN

0031-9007

1079-7114

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