Open charm-bottom axial-vector tetraquarks and their properties
Abstract The charged axial-vector $$J^{P}=1^{+}$$ J P = 1 + tetraquarks $$Z_{q}=[cq][\bar{b} \bar{q} ]$$ Z q = [ c q ] [ b ¯ q ¯ ] and $$Z_{s}=[cs][\bar{b} \bar{s}]$$ Z s = [ c s ] [ b ¯ s ¯ ] with the open charm-bottom contents are studied in the diquark–antidiquark model. The masses and meson–curr...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-05-01
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| Series: | European Physical Journal C: Particles and Fields |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-4892-8 |
| _version_ | 1818992260025417728 |
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| author | S. S. Agaev K. Azizi H. Sundu |
| author_facet | S. S. Agaev K. Azizi H. Sundu |
| author_sort | S. S. Agaev |
| collection | DOAJ |
| description | Abstract The charged axial-vector $$J^{P}=1^{+}$$ J P = 1 + tetraquarks $$Z_{q}=[cq][\bar{b} \bar{q} ]$$ Z q = [ c q ] [ b ¯ q ¯ ] and $$Z_{s}=[cs][\bar{b} \bar{s}]$$ Z s = [ c s ] [ b ¯ s ¯ ] with the open charm-bottom contents are studied in the diquark–antidiquark model. The masses and meson–current couplings of these states are calculated by employing a QCD two-point sum rule approach, where the quark, gluon and mixed condensates up to eight dimensions are taken into account. These parameters of the tetraquark states $$ Z_{q}$$ Z q and $$Z_{s}$$ Z s are used to analyze the vertices $$Z_q B_c \rho $$ Z q B c ρ and $$Z_s B_c \phi $$ Z s B c ϕ to determine the strong $$g_{Z_qB_c \rho }$$ g Z q B c ρ and $$g_{Z_sB_c \phi }$$ g Z s B c ϕ couplings. For these purposes, the QCD light-cone sum rule method and its soft-meson approximation are utilized. The couplings $$g_{Z_qB_c \rho }$$ g Z q B c ρ and $$ g_{Z_sB_c \phi }$$ g Z s B c ϕ , extracted from this analysis, are applied for evaluating the strong $$Z_q \rightarrow B_c \rho $$ Z q → B c ρ and $$Z_s \rightarrow B_c \phi $$ Z s → B c ϕ decays’ widths, which are essential results of the present investigation. Our predictions for the masses of the $$Z_{q}$$ Z q and $$Z_{s}$$ Z s states are confronted with similar results available in the literature. |
| first_indexed | 2024-12-20T20:23:20Z |
| format | Article |
| id | doaj.art-0601322b8b924bce8af2fd0308372463 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-20T20:23:20Z |
| publishDate | 2017-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-0601322b8b924bce8af2fd03083724632022-12-21T19:27:30ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522017-05-0177511110.1140/epjc/s10052-017-4892-8Open charm-bottom axial-vector tetraquarks and their propertiesS. S. Agaev0K. Azizi1H. Sundu2Institute for Physical Problems, Baku State UniversityDepartment of Physics, Doǧuş UniversityDepartment of Physics, Kocaeli UniversityAbstract The charged axial-vector $$J^{P}=1^{+}$$ J P = 1 + tetraquarks $$Z_{q}=[cq][\bar{b} \bar{q} ]$$ Z q = [ c q ] [ b ¯ q ¯ ] and $$Z_{s}=[cs][\bar{b} \bar{s}]$$ Z s = [ c s ] [ b ¯ s ¯ ] with the open charm-bottom contents are studied in the diquark–antidiquark model. The masses and meson–current couplings of these states are calculated by employing a QCD two-point sum rule approach, where the quark, gluon and mixed condensates up to eight dimensions are taken into account. These parameters of the tetraquark states $$ Z_{q}$$ Z q and $$Z_{s}$$ Z s are used to analyze the vertices $$Z_q B_c \rho $$ Z q B c ρ and $$Z_s B_c \phi $$ Z s B c ϕ to determine the strong $$g_{Z_qB_c \rho }$$ g Z q B c ρ and $$g_{Z_sB_c \phi }$$ g Z s B c ϕ couplings. For these purposes, the QCD light-cone sum rule method and its soft-meson approximation are utilized. The couplings $$g_{Z_qB_c \rho }$$ g Z q B c ρ and $$ g_{Z_sB_c \phi }$$ g Z s B c ϕ , extracted from this analysis, are applied for evaluating the strong $$Z_q \rightarrow B_c \rho $$ Z q → B c ρ and $$Z_s \rightarrow B_c \phi $$ Z s → B c ϕ decays’ widths, which are essential results of the present investigation. Our predictions for the masses of the $$Z_{q}$$ Z q and $$Z_{s}$$ Z s states are confronted with similar results available in the literature.http://link.springer.com/article/10.1140/epjc/s10052-017-4892-8Operator Product ExpansionCharmonium StateTetraquark StateCurrent CouplingBorel Parameter |
| spellingShingle | S. S. Agaev K. Azizi H. Sundu Open charm-bottom axial-vector tetraquarks and their properties European Physical Journal C: Particles and Fields Operator Product Expansion Charmonium State Tetraquark State Current Coupling Borel Parameter |
| title | Open charm-bottom axial-vector tetraquarks and their properties |
| title_full | Open charm-bottom axial-vector tetraquarks and their properties |
| title_fullStr | Open charm-bottom axial-vector tetraquarks and their properties |
| title_full_unstemmed | Open charm-bottom axial-vector tetraquarks and their properties |
| title_short | Open charm-bottom axial-vector tetraquarks and their properties |
| title_sort | open charm bottom axial vector tetraquarks and their properties |
| topic | Operator Product Expansion Charmonium State Tetraquark State Current Coupling Borel Parameter |
| url | http://link.springer.com/article/10.1140/epjc/s10052-017-4892-8 |
| work_keys_str_mv | AT ssagaev opencharmbottomaxialvectortetraquarksandtheirproperties AT kazizi opencharmbottomaxialvectortetraquarksandtheirproperties AT hsundu opencharmbottomaxialvectortetraquarksandtheirproperties |