Charged-to-neutral meson yield ratio at ψ (3770) and (4S) revisited

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The recent precision measurement of the relative yield of D+D- and D0D0 meson pairs at the ψ(3770) peak in e+e- annihilation is about 3.7 sigma away from a straightforward theoretical estimate. It is argued that combined with an even more significant deviation of a similar ratio for the B mesons at the (4S) peak, this provides an insight into the structure of heavy mesons and requires both a form factor, corresponding to their finite "size," and a strong interaction between the mesons in the isovector state IG(JP)=1+(1-). It is also argued that the data for the D and B mesons are possibly compatible with the heavy quark limit of the same meson-antimeson strong interaction in both systems.

Original languageEnglish (US)
Article number114023
JournalPhysical Review D
Issue number11
StatePublished - Jun 22 2018

Bibliographical note

Funding Information:
This work is supported in part by U.S. Department of Energy Grant No. DE-SC0011842.

Publisher Copyright:
© 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.


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