Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions
Abstract We calculate the total cross section and transverse momentum distributions for the production of the enigmatic $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) (or X(3872)) assuming different scenarios: $$c \bar{c}$$ c c ¯ state and $$D^{0*} {\bar{D}}^0 + D^0 {\bar{D}}^{0*}$$ D 0 ∗ D ¯ 0 + D 0 D ¯ 0 ∗ m...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-11029-x |
| _version_ | 1828281041107812352 |
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| author | Anna Cisek Wolfgang Schäfer Antoni Szczurek |
| author_facet | Anna Cisek Wolfgang Schäfer Antoni Szczurek |
| author_sort | Anna Cisek |
| collection | DOAJ |
| description | Abstract We calculate the total cross section and transverse momentum distributions for the production of the enigmatic $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) (or X(3872)) assuming different scenarios: $$c \bar{c}$$ c c ¯ state and $$D^{0*} {\bar{D}}^0 + D^0 {\bar{D}}^{0*}$$ D 0 ∗ D ¯ 0 + D 0 D ¯ 0 ∗ molecule. The derivative of the $$c \bar{c}$$ c c ¯ wave function needed in the first scenario is taken from a potential model calculations. Compared to earlier calculations of molecular state we include not only single parton scattering (SPS) but also double parton scattering (DPS) contributions. The latter one seems to give smaller contribution than the SPS one. The upper limit for the DPS production of $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) is much below the CMS data. We compare results of our calculations with existing experimental data of CMS, ATLAS and LHCb collaborations. Reasonable cross sections can be obtained in either $$c \bar{c}$$ c c ¯ or molecular $$D {\bar{D}}^*$$ D D ¯ ∗ scenarios for X(3872), provided one takes into account both directly produced $$D^0, \bar{D}^0$$ D 0 , D ¯ 0 , as well as $$D^0, \bar{D}^0$$ D 0 , D ¯ 0 from the decay of $$D^*$$ D ∗ . However arguments related to the lifetime of $$D^*$$ D ∗ suggest that the latter component is not active. |
| first_indexed | 2024-04-13T08:08:52Z |
| format | Article |
| id | doaj.art-4c8f3a5205a949b6a1868b52bf6b67e8 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-13T08:08:52Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-4c8f3a5205a949b6a1868b52bf6b67e82022-12-22T02:55:03ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-11-0182111810.1140/epjc/s10052-022-11029-xStructure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactionsAnna Cisek0Wolfgang Schäfer1Antoni Szczurek2College of Natural Sciences, Institute of Physics, University of RzeszówInstitute of Nuclear Physics, Polish Academy of SciencesCollege of Natural Sciences, Institute of Physics, University of RzeszówAbstract We calculate the total cross section and transverse momentum distributions for the production of the enigmatic $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) (or X(3872)) assuming different scenarios: $$c \bar{c}$$ c c ¯ state and $$D^{0*} {\bar{D}}^0 + D^0 {\bar{D}}^{0*}$$ D 0 ∗ D ¯ 0 + D 0 D ¯ 0 ∗ molecule. The derivative of the $$c \bar{c}$$ c c ¯ wave function needed in the first scenario is taken from a potential model calculations. Compared to earlier calculations of molecular state we include not only single parton scattering (SPS) but also double parton scattering (DPS) contributions. The latter one seems to give smaller contribution than the SPS one. The upper limit for the DPS production of $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) is much below the CMS data. We compare results of our calculations with existing experimental data of CMS, ATLAS and LHCb collaborations. Reasonable cross sections can be obtained in either $$c \bar{c}$$ c c ¯ or molecular $$D {\bar{D}}^*$$ D D ¯ ∗ scenarios for X(3872), provided one takes into account both directly produced $$D^0, \bar{D}^0$$ D 0 , D ¯ 0 , as well as $$D^0, \bar{D}^0$$ D 0 , D ¯ 0 from the decay of $$D^*$$ D ∗ . However arguments related to the lifetime of $$D^*$$ D ∗ suggest that the latter component is not active.https://doi.org/10.1140/epjc/s10052-022-11029-x |
| spellingShingle | Anna Cisek Wolfgang Schäfer Antoni Szczurek Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions European Physical Journal C: Particles and Fields |
| title | Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions |
| title_full | Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions |
| title_fullStr | Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions |
| title_full_unstemmed | Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions |
| title_short | Structure and production mechanism of the enigmatic X(3872) in high-energy hadronic reactions |
| title_sort | structure and production mechanism of the enigmatic x 3872 in high energy hadronic reactions |
| url | https://doi.org/10.1140/epjc/s10052-022-11029-x |
| work_keys_str_mv | AT annacisek structureandproductionmechanismoftheenigmaticx3872inhighenergyhadronicreactions AT wolfgangschafer structureandproductionmechanismoftheenigmaticx3872inhighenergyhadronicreactions AT antoniszczurek structureandproductionmechanismoftheenigmaticx3872inhighenergyhadronicreactions |