This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1016/j.physletb.2009.10.069 in citations.
Please use the identifier: http://hdl.handle.net/2128/10356 in citations.
Extraction of the strong neutron-proton mass difference from the charge symmetry breaking in pn -> d pi_0
Extraction of the strong neutron-proton mass difference from the charge symmetry breaking in pn -> d pi_0
We perform a complete calculation of charge symmetry breaking effects for the reaction pn --> d pi(0) at leading order in chiral perturbation theory. A new leading-order operator is included. From our analysis we extract delta m(N)(str), the strong contribution to the neutron-proton mass differen...
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Personal Name(s): | Filin, A. |
---|---|
Baru, V. / Epelbaum, E. / Haidenbauer, J. / Hanhart, C. / Kudryavtsev, A. E. / Meissner, U.G. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 |
Published in: | Physics letters / B, 681 (2009) S. 423 - 427 |
Imprint: |
Amsterdam
North-Holland Publ.
2009
|
Physical Description: |
423 - 427 |
DOI: |
10.1016/j.physletb.2009.10.069 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Physics Letters B
681 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10356 in citations.
We perform a complete calculation of charge symmetry breaking effects for the reaction pn --> d pi(0) at leading order in chiral perturbation theory. A new leading-order operator is included. From our analysis we extract delta m(N)(str), the strong contribution to the neutron-proton mass difference. The value obtained, delta m(N)(str) = (1.5 +/- 0.8 (exp.) +/- 0.5 (th.)) MeV, is consistent with the result based on the Cottingham sum rule. This agreement provides a non-trivial test of our current understanding of the chiral structure of QCD. (C) 2009 Elsevier B.V. All rights reserved. |