Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay
Abstract We analyze theoretically the $$D^+\rightarrow \nu e^+ \rho \bar{K}$$ D+→νe+ρK¯ and $$D^+\rightarrow \nu e^+ \bar{K}^* \pi $$ D+→νe+K¯∗π decays to see the feasibility to check the double pole nature of the axial-vector resonance $$K_1(1270)$$ K1(1270) predicted by the unitary extensions of c...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-05-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-7939-1 |
| _version_ | 1831636011414716416 |
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| author | Guan-Ying Wang Luis Roca En Wang Wei-Hong Liang Eulogio Oset |
| author_facet | Guan-Ying Wang Luis Roca En Wang Wei-Hong Liang Eulogio Oset |
| author_sort | Guan-Ying Wang |
| collection | DOAJ |
| description | Abstract We analyze theoretically the $$D^+\rightarrow \nu e^+ \rho \bar{K}$$ D+→νe+ρK¯ and $$D^+\rightarrow \nu e^+ \bar{K}^* \pi $$ D+→νe+K¯∗π decays to see the feasibility to check the double pole nature of the axial-vector resonance $$K_1(1270)$$ K1(1270) predicted by the unitary extensions of chiral perturbation theory (UChPT). Indeed, within UChPT the $$K_1(1270)$$ K1(1270) is dynamically generated from the interaction of a vector and a pseudoscalar meson, and two poles are obtained for the quantum numbers of this resonance. The lower mass pole couples dominantly to $$K^*\pi $$ K∗π and the higher mass pole to $$\rho K$$ ρK , therefore we can expect that different reactions weighing differently these channels in the production mechanisms enhance one or the other pole. We show that the different final VP channels in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP weigh differently both poles, and this is reflected in the shape of the final vector-pseudoscalar invariant mass distributions. Therefore, we conclude that these decays are suitable to distinguish experimentally the predicted double pole of the $$K_1(1270)$$ K1(1270) resonance. |
| first_indexed | 2024-12-19T06:25:31Z |
| format | Article |
| id | doaj.art-f71b913b83d54f17a2cd54a635302177 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-19T06:25:31Z |
| publishDate | 2020-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-f71b913b83d54f17a2cd54a6353021772022-12-21T20:32:35ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-05-018051710.1140/epjc/s10052-020-7939-1Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decayGuan-Ying Wang0Luis Roca1En Wang2Wei-Hong Liang3Eulogio Oset4Department of Physics, Guangxi Normal UniversityDepartamento de Física, Universidad de MurciaDepartment of Physics, Guangxi Normal UniversityDepartment of Physics, Guangxi Normal UniversityDepartment of Physics, Guangxi Normal UniversityAbstract We analyze theoretically the $$D^+\rightarrow \nu e^+ \rho \bar{K}$$ D+→νe+ρK¯ and $$D^+\rightarrow \nu e^+ \bar{K}^* \pi $$ D+→νe+K¯∗π decays to see the feasibility to check the double pole nature of the axial-vector resonance $$K_1(1270)$$ K1(1270) predicted by the unitary extensions of chiral perturbation theory (UChPT). Indeed, within UChPT the $$K_1(1270)$$ K1(1270) is dynamically generated from the interaction of a vector and a pseudoscalar meson, and two poles are obtained for the quantum numbers of this resonance. The lower mass pole couples dominantly to $$K^*\pi $$ K∗π and the higher mass pole to $$\rho K$$ ρK , therefore we can expect that different reactions weighing differently these channels in the production mechanisms enhance one or the other pole. We show that the different final VP channels in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP weigh differently both poles, and this is reflected in the shape of the final vector-pseudoscalar invariant mass distributions. Therefore, we conclude that these decays are suitable to distinguish experimentally the predicted double pole of the $$K_1(1270)$$ K1(1270) resonance.http://link.springer.com/article/10.1140/epjc/s10052-020-7939-1 |
| spellingShingle | Guan-Ying Wang Luis Roca En Wang Wei-Hong Liang Eulogio Oset Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay European Physical Journal C: Particles and Fields |
| title | Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay |
| title_full | Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay |
| title_fullStr | Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay |
| title_full_unstemmed | Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay |
| title_short | Signatures of the two $$K_1(1270)$$ K1(1270) poles in $$D^+\rightarrow \nu e^+ V P$$ D+→νe+VP decay |
| title_sort | signatures of the two k 1 1270 k1 1270 poles in d rightarrow nu e v p d νe vp decay |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-7939-1 |
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