Possible contributions to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mo>+</mml:mo><mml:msub><mml:mi>η</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>due to intermediate meson rescatterings

Zhang, Yuan-Jiang; Zhao, Qiang; Qiao, C. F.

doi:10.1103/physrevd.78.054014

Cited by 14 publications

(8 citation statements)

References 32 publications

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“…We take λ = 0.56 GeV −1 and g = 0.59 [26,27]. Note that the t-channel loops suffer from divergence [28]. A dipole form factor is thus introduced to kill the divergence and also compensate the off-shell effects arising from virtual particle exchanges:…”

Section: Non-d D Decay Of ψ(3770)mentioning

confidence: 99%

Puzzles in charmonium decays

Zhao

2010

Nuclear Physics B - Proceedings Supplements

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The open charm effects via intermediate hadron loop transitions seem to play a crucial role in the understanding of several existing "puzzles" in charmonium exclusive decays, such as the $\psi(3770)$ non-$D\bar{D}$ decays, and "$\rho\pi$ puzzle" etc. In the charmonium energy region, non-perturbative mechanisms could be still sizeable, and as a consequence the intermediate hadron loop transitions also provide a mechanism for the helicity-selection-rule (HSR) violation. We report our recent progress on those existing puzzles.Comment: Invited talk on the 15th International Conference in QCD, June 28- July 3, 2010, Montpellier, Franc

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Section: Non-d D Decay Of ψ(3770)mentioning

confidence: 99%

Puzzles in charmonium decays

Zhao

2010

Nuclear Physics B - Proceedings Supplements

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“…Roughly speaking, most works can be divided into two major categories, either based on the light-cone factorization [9][10][11][12], or based on the NRQCD factorization approach [13][14][15][16] (for the investigations from other theoretical approaches, see Refs. [17][18][19][20]). …”

Section: Introductionmentioning

confidence: 99%

O(αsv2)correction toe+e−
Dong
¹
,
Feng
²
,
Jia
³

2012
Phys. Rev. D
37
1
32
0
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We investigate the Oð s v 2 Þ correction to the e þ e À ! J=c þ c process in the nonrelativistic QCD (NRQCD) factorization approach. Within some reasonable choices of the relative order-v 2 NRQCD matrix elements, we find that including this new ingredient of correction only mildly enhances the existing NRQCD predictions. We have also deduced the asymptotic expressions for the Oð s v 2 Þ short-distance coefficients, and reconfirm the early speculation that at next-to-leading order in s , the double logarithm of type ln 2 ðs=m 2 c Þ appearing in various NRQCD short-distance coefficients is always associated with the helicity-suppressed channels.

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“…Thus, we argue that ψ(3770) → J/ψη is dominated by the intermediate meson loops. Note that the t-channel loops suffer from divergence [24]. We then introduce a cut-off in the loop integrals via a standard dipole form factor,…”

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confidence: 99%

Towards a Dynamical Understanding of the Non-DD¯Decay ofψ(3770)

Zhang

Zhao

2009

Phys. Rev. Lett.

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We investigate the psi(3770) non-DD decays into VP, where V and P denote vector and pseudoscalar mesons, respectively, via Okubo-Zweig-Iizuka-rule-evading intermediate meson rescatterings in an effective Lagrangian theory. By identifying the leading meson loop transitions and constraining the model parameters with the available experimental data for psi(3770)-->J/psieta, phieta, and rhopi, we succeed in making a quantitative prediction for all psi(3770)-->VP with BRVP from 0.41% to 0.64%. It indicates that the Okubo-Zweig-Iizuka-rule-evading long-range interactions play a role in psi(3770) strong decays, and could be a key towards a full understanding of the mysterious psi(3770) non-DD decay mechanism.

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Possible contributions toe+e−→J/ψ+ηcdue to intermediate meson rescatterings

Cited by 14 publications

References 32 publications

Puzzles in charmonium decays

Puzzles in charmonium decays

O(αsv2)correction toe+e−
Dong
¹
,
Feng
²
,
Jia
³

2012
Phys. Rev. D
37
1
32
0
View full text Add to dashboard Cite

Towards a Dynamical Understanding of the Non-DD¯Decay ofψ(3770)

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Possible contributions toe+e−→J/ψ+ηcdue to intermediate meson rescatterings

Cited by 14 publications

References 32 publications

Puzzles in charmonium decays

Puzzles in charmonium decays

O(αsv2)correction toe+e−Dong1, Feng2, Jia3 2012Phys. Rev. D371320View full textAdd to dashboardCite

Towards a Dynamical Understanding of the Non-DD¯Decay ofψ(3770)

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About

O(αsv2)correction toe+e−
Dong
¹
,
Feng
²
,
Jia
³

2012
Phys. Rev. D
37
1
32
0
View full text Add to dashboard Cite