Sum rules for the decays of the c-even charmonium states

V. A. Novikov; L. B. Okun'; M. A. Shifman; A. I. Vainshtein; M. B. Voloshin; V. I. Zakharov

doi:10.1016/0370-2693(77)90432-4

Sum rules for the decays of the c-even charmonium states

V. A. Novikov, L. B. Okun', M. A. Shifman, A. I. Vainshtein, M. B. Voloshin, V. I. Zakharov

Physics and Astronomy (Twin Cities)

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Abstract

Sum rules for the decays of the C-even charmonium levels (¹S₀, ³P₀, ³P₂, ¹D₂) are derived. These rules are based on the asymptotic freedom of the quantum chromodynamics at small distances and on the analyticity. They refer to the various vacuum amplitudes involving products of charmed quark currents: electromagnetic current as well as currents with quantum numbers J^PC=0^-+,0⁺⁺,2⁺⁺,2^-+. The contribution of the continuum to some of the sum rules is small, and they are saturated by the contribution of the lowest charmonium levels. In this way we predict the widths of the two-photon decays of the charmonium states and estimate their total hadronic widths.

Original language	English (US)
Pages (from-to)	409-413
Number of pages	5
Journal	Physics Letters B
Volume	67
Issue number	4
DOIs	https://doi.org/10.1016/0370-2693(77)90432-4
State	Published - Apr 25 1977

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title = "Sum rules for the decays of the c-even charmonium states",

abstract = "Sum rules for the decays of the C-even charmonium levels (1S0, 3P0, 3P2, 1D2) are derived. These rules are based on the asymptotic freedom of the quantum chromodynamics at small distances and on the analyticity. They refer to the various vacuum amplitudes involving products of charmed quark currents: electromagnetic current as well as currents with quantum numbers JPC=0-+,0++,2++,2-+. The contribution of the continuum to some of the sum rules is small, and they are saturated by the contribution of the lowest charmonium levels. In this way we predict the widths of the two-photon decays of the charmonium states and estimate their total hadronic widths.",

author = "Novikov, {V. A.} and Okun', {L. B.} and Shifman, {M. A.} and Vainshtein, {A. I.} and Voloshin, {M. B.} and Zakharov, {V. I.}",

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T1 - Sum rules for the decays of the c-even charmonium states

AU - Novikov, V. A.

AU - Okun', L. B.

AU - Shifman, M. A.

AU - Vainshtein, A. I.

AU - Voloshin, M. B.

AU - Zakharov, V. I.

PY - 1977/4/25

Y1 - 1977/4/25

N2 - Sum rules for the decays of the C-even charmonium levels (1S0, 3P0, 3P2, 1D2) are derived. These rules are based on the asymptotic freedom of the quantum chromodynamics at small distances and on the analyticity. They refer to the various vacuum amplitudes involving products of charmed quark currents: electromagnetic current as well as currents with quantum numbers JPC=0-+,0++,2++,2-+. The contribution of the continuum to some of the sum rules is small, and they are saturated by the contribution of the lowest charmonium levels. In this way we predict the widths of the two-photon decays of the charmonium states and estimate their total hadronic widths.

AB - Sum rules for the decays of the C-even charmonium levels (1S0, 3P0, 3P2, 1D2) are derived. These rules are based on the asymptotic freedom of the quantum chromodynamics at small distances and on the analyticity. They refer to the various vacuum amplitudes involving products of charmed quark currents: electromagnetic current as well as currents with quantum numbers JPC=0-+,0++,2++,2-+. The contribution of the continuum to some of the sum rules is small, and they are saturated by the contribution of the lowest charmonium levels. In this way we predict the widths of the two-photon decays of the charmonium states and estimate their total hadronic widths.

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JO - Physics Letters B

JF - Physics Letters B

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Sum rules for the decays of the c-even charmonium states

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