Y(4260) as a four-quark state
We treat the Y(4260) resonance as a four-quark state in the framework of the covariant confining quark model. We study two choices of the interpolating current, either the molecular-type current which effectively corresponds to the product of L) and D1 quark currents or tetraquark one. In both cases...
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| Veröffentlicht in: | Physical review. D 2020-05, Vol.101 (9), Article 094030 |
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| container_title | Physical review. D |
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| creator | Dubnicka, S. Dubnickova, A. Z. Issadykov, A. Ivanov, M. A. Liptaj, A. |
| description | We treat the Y(4260) resonance as a four-quark state in the framework of the covariant confining quark model. We study two choices of the interpolating current, either the molecular-type current which effectively corresponds to the product of L) and D1 quark currents or tetraquark one. In both cases, we calculate the widths of decays Y(4260) -> 4(3900) + pi and Y(4260) ( D(*) ($) over bar(*). It is found that in both approaches the mode Y r is enhanced compared with the open -charm modes. However, the absolute value of the Y +>r decay width obtained in molecular picture is arguably too large. On the other hand, the value obtained in tetraquark picture is reasonable. |
| doi_str_mv | 10.1103/PhysRevD.101.094030 |
| format | Article |
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| subjects | Astronomy & Astrophysics Physical Sciences Physics Physics, Particles & Fields Science & Technology |
| title | Y(4260) as a four-quark state |
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