Vector-meson mixing and hadronic decays of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ψ</mml:mi></mml:math>

Clavelli, L.; Intemann, Gerald W.

doi:10.1103/physrevd.28.2767

Cited by 21 publications

(4 citation statements)

References 11 publications

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“…Based on the quark model or unitary-symmetry schemes, the , decays via the strong and electromagnetic interactions have been extensively studied using phenomenological models, such as the vector meson dominance model in Refs. [9][10][11][12][13][14][15][16][17][18][19][20], and various parametrizations of the OZI process in Refs. .…”

Section: J/ψ → Pp Pv Vv S S S a Aamentioning

confidence: 99%

Study of C parity violating and strangeness changing J/ψ → PP weak decays *

et al. 2021

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Although weak decays are rare, they are possible within the standard model of elementary particles. Inspired by the potential prospects of the future intensity frontier, the C parity violating , decays and the strangeness changing , decays are studied via the perturbative QCD approach. It is determined that the decays have relatively large branching ratios, approximately on the order of , which might be within the measurement capability and sensitivity of the future STCF experiment.

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Section: J/ψ → Pp Pv Vv S S S a Aamentioning

confidence: 99%

Study of C parity violating and strangeness changing J/ψ → PP weak decays *

et al. 2021

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“…( 10) and the other is the DOZI coupling strength r defined in Eq. (7). We adopt the commonly used value α P = 32.7 • as an input, while treat r as a free parameter to be determined by the isospin zero decay channels.…”

Section: Isospin Zero Channelsmentioning

confidence: 99%

“…In theory, this puzzle has also been broadly studied. Different explanations have been proposed in the literature, such as the color-octet model [6], vector meson mixing [7,8], final state interactions [9,10], admixtures of a vector glueball near J/ψ [11,12], intrinsic charm in light mesons [13], light-quark mixing effects [14], large survival decay of ψ ′ via virtual charmonium state [15], and interferences between the electromagnetic (EM) and strong interactions [16][17][18][19]. In the meantime, it has been realized that the "ρπ puzzle" is not just restricted to the ρπ decay channel.…”

Section: Introductionmentioning

confidence: 99%

Open charm effects in the explanation of the long-standing “ρπpuzzle”

Wang

Zhao

2012

Phys. Rev. D

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A detailed analysis of the open charm effects on the decays of J/ψ(ψ ′ ) → V P is presented, where V stands for light vector meson and P for light pseudoscalar meson. These are the channels that the so-called "12% rule" of perturbative QCD (pQCD) is obviously violated. Nevertheless, they are also the channels that violate the pQCD helicity selection rule (HSR) at leading order. In this work, we put constraints on the electromagnetic (EM) contribution, short-distance contribution from the cc annihilation at the wavefunction origin, and long-distance contribution from the open charm threshold effects on these two decays. We show that interferences among these amplitudes, in particular, the destructive interferences between the short-distance and long-distance strong amplitudes play a key role to evade the HSR and cause the significant deviations from the pQCD expected "12% rule".

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“…Many of the other P V channels behave similarly. There are many attempts to understand the J/ψ(Ψ ′ ) → P V decays; the proposed mechanisms reach from intrinsic charm in the light mesons [9], to color-octet contributions [10], vector meson mixing [11,12], final state interactions [13,14] and admixtures of a glueball nearly degenerate with the J/ψ [15,16]. Another example of a helicity non-conserving decay is set by the η c decay into proton and antiproton.…”

Section: Introductionmentioning

confidence: 99%

Implications of light-quark admixtures on charmonium decays into meson pairs

Feldmann

Kroll

2000

Phys. Rev. D

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We argue that charmonium decays into meson pairs fall into two distinct classes: one that is under control of perturbative QCD and another one that is governed by a soft mechanism. We concentrate on a systematic analysis of J/ψ(Ψ ′ ) decays into a light pseudoscalar and a light vector meson and η c decays into a pair of light vector mesons. These processes belong to the second class and are characterized by non-conserved hadronic helicity. It is assumed that, in these cases, the charmonium state decays dominantly through a lightquark Fock component by a soft mechanism which is characteristic of OZI-rule allowed strong decays. Estimating the light-quark admixture by meson mixing, we obtain a reasonable description of the branching ratios for these processes.

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Vector-meson mixing and hadronic decays ofψ

Cited by 21 publications

References 11 publications

Study of C parity violating and strangeness changing J/ψ → PP weak decays *

Study of C parity violating and strangeness changing J/ψ → PP weak decays *

Open charm effects in the explanation of the long-standing “ρπpuzzle”

Implications of light-quark admixtures on charmonium decays into meson pairs

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