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Structure and production mechanism of the enigmatic $X(3872)$ in high-energy hadronic reactions

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arxiv 2203.07827 v3 pith:UY7YXWBA submitted 2022-03-15 hep-ph

Anna Cisek , Wolfgang Schäfer , Antoni Szczurek This is my paper · ORCID
classification hep-ph
keywords productioncalculationscrossdataenigmaticmolecularpartonscattering
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We calculate the total cross section and transverse momentum distributions for the production of enigmatic $\chi_{c,1}(3872)$ (or X(3872)) assuming different scenarios: $c \bar c$ state and $D^{0*} {\bar D}^0 + D^0 {\bar D}^{0*}$ molecule. The derivative of the $c \bar c$ wave function needed in the first scenario is taken from a potential model calculations. Compared to earlier calculation 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 $\chi_{c,1}(3872)$ 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 $c \bar c$ or molecular $D {\bar D}^*$ scenarios for $X(3872)$. Also a hybrid scenario is not excluded.

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Cited by 2 Pith papers

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    hep-ph 2026-04 unverdicted novelty 5.5 of 10

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