Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session EN: Neutrino Physics II
7:00 PM–9:45 PM,
Thursday, October 25, 2018
Hilton
Room: Kohala 4
Chair: Javier Menendez, University of Tokyo
Abstract ID: BAPS.2018.HAW.EN.4
Abstract: EN.00004 : Muon Capture and the Axial Structure of the Nucleon*
7:45 PM–8:00 PM
Presenter:
Peter Kammel
(Univ of Washington)
Authors:
Peter Kammel
(Univ of Washington)
Richard J Hill
(University of Kentucky)
William J Marciano
(Brookhaven Natl Lab)
Alberto Sirlin
(New York University)
The weak charged-current reaction of muon capture has much in common with several aspects of neutrino physics. Its basic process, μp->nν is the inverse of quasi-elastic νn scattering, while muon capture on deuterium is governed by the same physics as solar pp fusion and νd scattering at SNO. In heavier nuclei, recent muon capture experiments explore virtual intermediate states of 0ν2β candidates. The presentation will focus on muon capture in hydrogen and the axial radius of the nucleon. We [R. Hill et al., 2018, Rep. Prog. Phys. in press] used the recent model independent reevaluation of of the axial radius rA2 (z exp.) = 0.46(22) fm2 from νd scattering and the hydrogen capture rate from the MuCap experiment, to update the value of the induced pseudoscalar form factor gP and, alternatively, to determine rA2 (MuCap) = 0.46(24) fm2 from muon capture. The impact of this result and the motivation for new, 3-fold improved muon capture experiment regarding neutrino quasi-elastic neutrino scattering in the GeV region is discussed.
*The work of PK was supported by the U.S. Department of Energy Office of Science, Office of Nuclear Physics under Award Number DE-FG02-97ER41020.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.EN.4
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