| Title: | Search for tetraquark states X_{c c \bar{s} \bar{s}}$▫ in ▫$D_s^+ D_s^+$▫ (▫$D_s^{\ast +} D_s^{\ast +}$▫) final states at Belle |
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| Authors: | ID Gao, X. Y. (Author)
ID Borah, Jyotirmoi (Author)
ID Bračko, Marko (Author)
ID Korpar, Samo (Author)
ID Križan, Peter (Author)
ID Pestotnik, Rok (Author)
ID Podobnik, Tomaž (Author)
ID Stanič, Samo (Author)
ID Starič, Marko (Author)
ID Šantelj, Luka (Author)
ID Zhukova, Valentina (Author), et al. |
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| Files: |  Gao-2022-Search_for_tetraquark_states__i_X_sub.pdf (1,28 MB)
MD5: 6E615672B26E96F085B9134B302CB2E9
 https://doi.org/10.1103/PhysRevD.105.032002
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | A search for double-heavy tetraquark state candidates Xccs¯s¯ decaying to Dþ s Dþ s and Dþ s Dþ s is presented for the first time using the data samples of 102 × 106 ϒð1SÞ and 158 × 106 ϒð2SÞ events, and the data samples at ffiffi ps ¼ 10.52, 10.58, and 10.867 GeV corresponding to integrated luminosities of 89.5, 711.0, and 121.4 fb−1, respectively, accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. The invariant-mass spectra of the Dþ s Dþ s and Dþ s Dþ s are studied to search for possible resonances. No significant signals are observed, and the 90% confidence level upper limits on the product branching fractions [Bðϒð1S; 2SÞ → Xccs¯s¯ þ anythingÞ × BðXccs¯s¯ → Dþ s Dþ s ðDþ s Dþ s ÞÞ] in ϒð1S; 2SÞ inclusive decays and the product values of Born cross section and branching fraction [σðeþe− → Xccs¯s¯ þ anythingÞ × BðXccs¯s¯ → Dþ s Dþ s ðDþ s Dþ s ÞÞ] in eþe− collisions at pffiffis ¼ 10.52, 10.58, and 10.867 GeV under different assumptions of Xccs¯s¯ masses and widths are obtained. |
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| Keywords: | tetraquark states, final states at Belle |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 06.12.2021 |
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| Article acceptance date: | 21.01.2022 |
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| Publication date: | 08.02.2022 |
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| Publisher: | American Physical Society |
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| Year of publishing: | 2022 |
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| Number of pages: | Str. 1-12 |
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| Numbering: | Letn. 105, št. 3, št. članka 032002 |
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| PID: | 20.500.12556/DKUM-92511  |
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| UDC: | 539.1 |
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| ISSN on article: | 2470-0010 |
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| COBISS.SI-ID: | 100996099 |
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| DOI: | 10.1103/PhysRevD.105.032002 |
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| Publication date in DKUM: | 15.04.2025 |
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| Views: | 175 |
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| Downloads: | 19 |
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| Metadata: |    |
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| Categories: | Misc.
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