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Fine-structure splittings of excited P-and D-wave states in charmonium

  • Elementary Particles and Fields
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Abstract

It is shown that, in the relativistic case, the fine-structure splittings of the excited 23 P J and 33 P J states in charmonium are as large as those of the 13 P J state if the same value of αs(μ)≈0.36 is used. The predicted mass of M(23 P 0)=3.84 GeV appears to be 120 MeV lower than the center of gravity of the 23 P J multiplet and lies below the D \(\bar D\) * threshold. Our value of M(23 P 0) is nearly 80 MeV lower than that from the Godfrey and Isgur article [Phys. Rev. D 32, 189 (1985)], while the differences in other masses are not greater than 20 MeV.

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From Yadernaya Fizika, Vol. 63, No. 9, 2000, pp. 1722–1727.

Original English Text Copyright © 2000 by Badalian, Morgunov, Bakker.

This article was submitted by the authors in English.

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Badalian, A.M., Morgunov, V.L. & Bakker, B.L.G. Fine-structure splittings of excited P-and D-wave states in charmonium. Phys. Atom. Nuclei 63, 1635–1639 (2000). https://doi.org/10.1134/1.1312898

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  • DOI: https://doi.org/10.1134/1.1312898

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