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Phys. Rev. Lett. 100, 172501 (2008) [4 pages]

Measurement of the Reaction 2H(e,e′) at 180° Close to the Deuteron Breakup Threshold

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N. Ryezayeva1,*, H. Arenhövel2, O. Burda1, A. Byelikov1, M. Chernykh1, J. Enders1, H. W. Grießhammer3, Y. Kalmykov1, P. von Neumann-Cosel1,†, B. Özel1,4, I. Poltoratska1, I. Pysmenetska1, C. Rangacharyulu5, S. Rathi1, A. Richter1, G. Schrieder1, A. Shevchenko1, and O. Yevetska1
1Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
2Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany
3Center for Nuclear Studies, Department of Physics, George Washington University, Washington, D.C. 20052, USA
4Science and Art Faculty, Çukurova University, 01330 Adana, Turkey
5Department of Physics, University of Saskatchewan, Saskatoon, Canada, S7N 5E2

Received 10 December 2007; published 28 April 2008

Inclusive inelastic electron scattering off the deuteron under 180° has been studied at the S-DALINAC close to the breakup threshold at momentum transfers q=0.27  fm-1 and 0.74  fm-1 with good energy resolution sufficient to map in detail the spin flip M1 response, which governs the starting reaction pn→dγ of big-bang nucleosynthesis over most of the relevant temperature region. Results from potential model calculations and (for q=0.27  fm-1) from pionless nuclear effective field theory are in excellent agreement with the data.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.172501
DOI:
10.1103/PhysRevLett.100.172501
PACS:
25.30.Fj, 21.45.−v, 26.35.+c, 27.10.+h

*Present address: DESY, D-15738 Zeuthen, Germany.

†vnc@ikp.tu-darmstadt.de

 
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