The hidden charm pentaquarks are the hidden color-octet uud baryons?
The I(JP)=12(12−), 12(32−), and 12(52−) uudcc‾ pentaquarks are investigated by the quark cluster model. This model, which reproduces the mass spectra of the color-singlet S-wave q3 baryons and qq‾ mesons, also enables us to evaluate the quark interaction in the color-octet uud configurations. It is...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-01-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316306979 |
| _version_ | 1819238066509840384 |
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| author | Sachiko Takeuchi Makoto Takizawa |
| author_facet | Sachiko Takeuchi Makoto Takizawa |
| author_sort | Sachiko Takeuchi |
| collection | DOAJ |
| description | The I(JP)=12(12−), 12(32−), and 12(52−) uudcc‾ pentaquarks are investigated by the quark cluster model. This model, which reproduces the mass spectra of the color-singlet S-wave q3 baryons and qq‾ mesons, also enables us to evaluate the quark interaction in the color-octet uud configurations. It is shown that the color-octet isospin-12 spin-32 uud configuration gains an attraction. The uudcc‾ states with this configuration have structures around the Σc(⁎)D‾(⁎) thresholds: one bound state, two resonances, and one large cusp are found. We argue that the negative parity pentaquark found by the LHCb experiments may be given by these structures. |
| first_indexed | 2024-12-23T13:30:19Z |
| format | Article |
| id | doaj.art-9f5193d341f24dcfa7fc881befe7f9cc |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-12-23T13:30:19Z |
| publishDate | 2017-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-9f5193d341f24dcfa7fc881befe7f9cc2022-12-21T17:45:12ZengElsevierPhysics Letters B0370-26931873-24452017-01-01764C25425910.1016/j.physletb.2016.11.034The hidden charm pentaquarks are the hidden color-octet uud baryons?Sachiko Takeuchi0Makoto Takizawa1Japan College of Social Work, Kiyose, Tokyo 204-8555, JapanShowa Pharmaceutical University, Machida, Tokyo 194-8543, JapanThe I(JP)=12(12−), 12(32−), and 12(52−) uudcc‾ pentaquarks are investigated by the quark cluster model. This model, which reproduces the mass spectra of the color-singlet S-wave q3 baryons and qq‾ mesons, also enables us to evaluate the quark interaction in the color-octet uud configurations. It is shown that the color-octet isospin-12 spin-32 uud configuration gains an attraction. The uudcc‾ states with this configuration have structures around the Σc(⁎)D‾(⁎) thresholds: one bound state, two resonances, and one large cusp are found. We argue that the negative parity pentaquark found by the LHCb experiments may be given by these structures.http://www.sciencedirect.com/science/article/pii/S0370269316306979Hidden-charm pentaquarkColor-octet baryonExotic hadronMultiquark hadronBaryon–meson scattering |
| spellingShingle | Sachiko Takeuchi Makoto Takizawa The hidden charm pentaquarks are the hidden color-octet uud baryons? Physics Letters B Hidden-charm pentaquark Color-octet baryon Exotic hadron Multiquark hadron Baryon–meson scattering |
| title | The hidden charm pentaquarks are the hidden color-octet uud baryons? |
| title_full | The hidden charm pentaquarks are the hidden color-octet uud baryons? |
| title_fullStr | The hidden charm pentaquarks are the hidden color-octet uud baryons? |
| title_full_unstemmed | The hidden charm pentaquarks are the hidden color-octet uud baryons? |
| title_short | The hidden charm pentaquarks are the hidden color-octet uud baryons? |
| title_sort | hidden charm pentaquarks are the hidden color octet uud baryons |
| topic | Hidden-charm pentaquark Color-octet baryon Exotic hadron Multiquark hadron Baryon–meson scattering |
| url | http://www.sciencedirect.com/science/article/pii/S0370269316306979 |
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