Abstract
High precision measurements of induced and transferred recoil proton polarization in d(γ→,p→)n have been performed for photon energies of 277-357 MeV and θcm=20°-120°. The measurements were motivated by a longstanding discrepancy between meson-baryon model calculations and data at higher energies. At the low energies of this experiment, theory continues to fail to reproduce the data, indicating that either something is missing in the calculations and/or there is a problem with the accuracy of the nucleon-nucleon potential being used.
Original language | English |
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Pages (from-to) | 194-198 |
Number of pages | 5 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 697 |
Issue number | 3 |
DOIs | |
State | Published - 7 Mar 2011 |
Externally published | Yes |
Bibliographical note
Funding Information:We thank the Jefferson Lab physics and accelerator divisions for their contributions. This work was supported by the US Department of Energy (including contract DE-AC02-06CH11357 ), the US National Science Foundation , the Israel Science Foundation , the Korea Science Foundation , the US–Israeli Bi-National Scientific Foundation , the Natural Sciences and Engineering Research Council of Canada , the Killam Trusts Fund , the Walter C. Sumner Foundation and the Deutsche Forschungsgemeinschaft ( SFB 443 ). Jefferson Science Associates operates the Thomas Jefferson National Accelerator Facility under DOE contract DE-AC05-06OR23177 . The polarimeter was funded by the US National Science Foundation , grants PHY 9213864 and PHY 9213869 .
Keywords
- Deuteron photodisintegration
- Meson-baryon model
- Polarization