Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction
This paper investigates the decay process Λb→Σc++D−K− with the objective of finding a predicted molecular state with isospin I=1, JP=2+ of D⁎K⁎ nature, plus finding support for the Pc(4312) state as made out of ΣcD¯. The mass distribution of the D−K− system shows distinct features as a consequence o...
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| Language: | English |
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Elsevier
2025-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325000541 |
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| author | Jing Song Zi-Ying Yang Eulogio Oset |
| author_facet | Jing Song Zi-Ying Yang Eulogio Oset |
| author_sort | Jing Song |
| collection | DOAJ |
| description | This paper investigates the decay process Λb→Σc++D−K− with the objective of finding a predicted molecular state with isospin I=1, JP=2+ of D⁎K⁎ nature, plus finding support for the Pc(4312) state as made out of ΣcD¯. The mass distribution of the D−K− system shows distinct features as a consequence of the existence of this 2+ state, while the ΣcD¯ distribution exhibits a significant peak near the threshold, much bigger than phase space expectations, which is linked to our assumed ΣcD¯ nature of the Pc(4312) state below the ΣcD¯ threshold. The reaction has been measured at LHCb Collaboration, but only the branching ratio is measured. The present study shows that much valuable information can be obtained about the predicted 2+ Tcs¯(2834) of D⁎K⁎ nature and the Pc(4312) states from the measurements of the mass distributions in this reaction, which will be accessible in the planned updates of LHCb. |
| format | Article |
| id | doaj-art-d2ed4bd68f15498ba1442dc29a745318 |
| institution | Kabale University |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-d2ed4bd68f15498ba1442dc29a7453182025-02-10T04:34:13ZengElsevierPhysics Letters B0370-26932025-02-01861139294Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reactionJing Song0Zi-Ying Yang1Eulogio Oset2School of Physics, Beihang University, Beijing, 102206, China; Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, 46071 Valencia, SpainSchool of Physics, Beihang University, Beijing, 102206, China; Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, 46071 Valencia, SpainDepartamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, 46071 Valencia, Spain; Department of Physics, Guangxi Normal University, Guilin 541004, China; Corresponding author.This paper investigates the decay process Λb→Σc++D−K− with the objective of finding a predicted molecular state with isospin I=1, JP=2+ of D⁎K⁎ nature, plus finding support for the Pc(4312) state as made out of ΣcD¯. The mass distribution of the D−K− system shows distinct features as a consequence of the existence of this 2+ state, while the ΣcD¯ distribution exhibits a significant peak near the threshold, much bigger than phase space expectations, which is linked to our assumed ΣcD¯ nature of the Pc(4312) state below the ΣcD¯ threshold. The reaction has been measured at LHCb Collaboration, but only the branching ratio is measured. The present study shows that much valuable information can be obtained about the predicted 2+ Tcs¯(2834) of D⁎K⁎ nature and the Pc(4312) states from the measurements of the mass distributions in this reaction, which will be accessible in the planned updates of LHCb.http://www.sciencedirect.com/science/article/pii/S0370269325000541 |
| spellingShingle | Jing Song Zi-Ying Yang Eulogio Oset Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction Physics Letters B |
| title | Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction |
| title_full | Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction |
| title_fullStr | Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction |
| title_full_unstemmed | Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction |
| title_short | Searching for signals of an exotic I = 1,JP = 2+ state of D⁎K⁎ nature and the structure of the Pc(4312) in the Λb→Σc++D−K− reaction |
| title_sort | searching for signals of an exotic i 1 jp 2 state of d k nature and the structure of the pc 4312 in the λb σc d k reaction |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325000541 |
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