Why is ψ(4.414) so narrow?

Yaouanc, A. Le; Oliver, L.; Pène, O.; Raynal, J.

doi:10.1016/0370-2693(77)90062-4

Cited by 206 publications

(156 citation statements)

References 7 publications

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“…Le Yaouanc et al [9]. This model has been widely used to evaluate the strong decays of hadrons [10][11][12][13][14][15][16][17][18][19][20][21], since it gives a good description of many observed decay amplitudes and partial widths of the hadrons. Y.…”

Section: Introductionmentioning

confidence: 99%

Systematic analysis of D _J (2580), D* _J (2650), D _J (2740), D* _J (2760), D _J (3000) and D* _J (3000) in the D meson family

Wang

et al. 2015

Chinese Phys. C

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In this work, we tentatively assign the charmed mesons DJ ( 2771.7 ± 1.7 ± 3.8 66.7 ± 6.6 ± 10.5 2763.3 ± 2.3 ± 2.3 60.9 ± 5.1 ± 3.6. The BaBar collaboration also analyzed the helicity distributions to determine the spin-parity, and tentatively identified the (D(2550),D(2600)) as the 2S doublet (0 − , 1 − ), the D(2750) and D(2760) as the D-wave states. The relevant parameters are presented in Table II, where we also present the possible correspondences among the particles observed by the LHCb and BaBar collaborations. The physicists have also studied the decay behaviors of these charmed mesons using the The heavy meson effective theory is a powerful tool in studying the properties of hadrons with a single heavy quark. With this method, P. Colangelo et al. proposed a classification of many observed cq and bq mesons in doublets [6]. In Ref.[7], we study the strong decays of the charmed mesons3000) and D * J (3000) with the heavy meson effective theory in the leading order approximation. And the ratios among decay widths of different channels were calculated. But the exact value of the decay widths were not given out, which constitutes the first motivation of our study. The quark pair creation (QPC) model is another effective method to 3 study the strong decays of the mesons, which is also known as the 3 P 0 decay model. 3000) and D * J (3000), it is necessary and interesting to systematically study the strong decays of these charmed mesons by the 3 P 0 decay model with the common oscillator parameter R.In the heavy quark limit, the heavy-light mesons Qq can be classified in doublets according to the total angular momentum of the light antiquark s l , s l = s q + L, where the s q and L are the spin and orbital angular momentum of the light antiquark, respectively [23]. In the case of the radial quantum number n = 1, the doublet (P ,P * ) have the spin-parity Jfor L = 0; the two doublets (P * 0 , P 1 ) and (P 1 , P * 2 ) have the spin-parity Jrespectively for L = 1; the two doublets (P * 1 , P 2 ) and (P 2 , P * 3 ) have the spin-parity J2 respectively for L = 2; the two doublets (P * 2 , P 3 ) and (P 3 , P * 4 ) have the spin-parity Jrespectively for L = 3, where the superscript P denotes the parity. The n = 2, 3, 4, states are clarified by analogous doublets, for example, n = 2, the doublet (P ′ , P * ′ ) have the spin-parity J0 have unnatural parity, and their possible spin-parity In the following, we list out the possible assignments,The article is arranged as follows: In section 2, the brief review of the 3 P 0 decay model is given (For the detailed review see Refs. [9,11,12,14]); In section 3, we study the strong decays of the charmed3000) with the 3 P 0 decay model;In section 4, we present our conclusions. The main assumption of the 3 P 0 decay model is that the strong decays take place via the creation of a 3 P 0 quark-antiquark pair from the vacuum. The new produced quark-antiquark pair, together with the qq in the initial meson, regroups into two outgoing mesons in all possible quark rearrangement ways,...

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Section: Introductionmentioning

confidence: 99%

Systematic analysis of D _J (2580), D* _J (2650), D _J (2740), D* _J (2760), D _J (3000) and D* _J (3000) in the D meson family

Wang

et al. 2015

Chinese Phys. C

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“…Yaouanc et al used to employ the harmonic oscillator to evaluate such processes, and they got γ q ≈ 3 [13], which is very close to the value we obtain with HQET. However, it is also noted that γ q is purely a phenomenological parameter and its value may vary within a reasonable range, for example, in their later work, Yaouanc et al took γ q to be 4 instead, when they fitted data [12].…”

Section: Numerical Resultsmentioning

confidence: 99%

“…In the 1970s, QPC model was developed by Yaouanc et al [10,11,12,13] and applied to study hadron decays extensively. Recently there are some works [14,15] to study QPC model and its applications [16].…”

Section: Formulationmentioning

confidence: 99%

Study on Production of Exotic 0⁺MesonD^*_sJ(2317) in Decays of ψ(4415)

Guo¹,

Ke²,

Li³

et al. 2007

Commun. Theor. Phys.

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The newly observed D * sJ family containing D * sJ (2317), D sJ (2460) and D sJ (2632) attracts great interests. Determining their structure may be important tasks for both theorists and experimentalists. In this work we use the heavy quark effective theory (HQET) and a non-relativistic model to evaluate the production rate of D * sJ (2317) from the decays of ψ(4415), and we find that it is sizable and may be observed at BES III and CLEO, if it is a p-wave excited state of D s (1968). Unfortunately, the other two members of the family cannot be observed through decays of charmonia, because of the constraints from the final state phase space.

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“…In the following, we briefly explain the QPC model adopted here. After the QPC model [17] was proposed, this model was further developed by the Orsay group of Le Yaouanc et al [23][24][25][26][27]. Later, this model was widely applied to study the OZIallowed strong decay of hadrons [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46].…”

Section: B Brief Review Of the Qpc Modelmentioning

confidence: 99%

Phenomenological study of the isovector tensor meson family

Pang

Liu

et al. 2014

Phys. Rev. D

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In this work, we study all the observed a 2 states and group them into the a 2 meson family, where their total and two-body Okubo-Zweig-Iizuka allowed strong decay partial widths are calculated via the quark pair creation model. Taking into account the present experimental data, we further give the corresponding phenomenological analysis, which is valuable to test whether each a 2 state can be assigned into the a 2 meson family. What is more important is that the prediction of their decay behaviors will be helpful for future experimental study of the a 2 states.

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Why is ψ(4.414) so narrow?

Cited by 206 publications

References 7 publications

Systematic analysis of D _J (2580), D* _J (2650), D _J (2740), D* _J (2760), D _J (3000) and D* _J (3000) in the D meson family

Systematic analysis of D _J (2580), D* _J (2650), D _J (2740), D* _J (2760), D _J (3000) and D* _J (3000) in the D meson family

Study on Production of Exotic 0⁺MesonD^*_sJ(2317) in Decays of ψ(4415)

Phenomenological study of the isovector tensor meson family

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Why is ψ(4.414) so narrow?

Cited by 206 publications

References 7 publications

Systematic analysis of D J (2580), D* J (2650), D J (2740), D* J (2760), D J (3000) and D* J (3000) in the D meson family

Systematic analysis of D J (2580), D* J (2650), D J (2740), D* J (2760), D J (3000) and D* J (3000) in the D meson family

Study on Production of Exotic 0+MesonD*sJ(2317) in Decays of ψ(4415)

Phenomenological study of the isovector tensor meson family

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Systematic analysis of D _J (2580), D* _J (2650), D _J (2740), D* _J (2760), D _J (3000) and D* _J (3000) in the D meson family

Systematic analysis of D _J (2580), D* _J (2650), D _J (2740), D* _J (2760), D _J (3000) and D* _J (3000) in the D meson family

Study on Production of Exotic 0⁺MesonD^*_sJ(2317) in Decays of ψ(4415)