This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.103.082003 in citations.
Please use the identifier: http://hdl.handle.net/2128/7230 in citations.
Extraction of the Light Quark Mass Ratio from the Decays psi(')-> J/psi pi(0)(eta)
Extraction of the Light Quark Mass Ratio from the Decays psi(')-> J/psi pi(0)(eta)
Light quark masses are important fundamental parameters of the standard model. The decays psi(')-> J/Sigma pi(0)(eta) were widely used in determining the light quark mass ratio m(u)/m(d). However, there is a large discrepancy between the resulting value of m(u)/m(d) and the one determined fr...
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Personal Name(s): | Guo, F.-K. |
---|---|
Hanhart, C. / Meissner, U.G. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 |
Published in: | Physical review letters, 103 (2009) |
Imprint: |
College Park, Md.
APS
2009
|
DOI: |
10.1103/PhysRevLett.103.082003 |
Document Type: |
Journal Article |
Research Program: |
Study of Strongly Interacting Matter Physik der Hadronen und Kerne |
Series Title: |
Physical Review Letters
103 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7230 in citations.
Light quark masses are important fundamental parameters of the standard model. The decays psi(')-> J/Sigma pi(0)(eta) were widely used in determining the light quark mass ratio m(u)/m(d). However, there is a large discrepancy between the resulting value of m(u)/m(d) and the one determined from the light pseudoscalar meson masses. Using the technique of nonrelativistic effective field theory, we show that intermediate charmed meson loops lead to a sizable contribution to the decays and hence make the psi(')-> J/psi pi(0)(eta) decays not suitable for a precise extraction of the light quark mass ratio. |