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arXiv · 2304.11142

Inclusive production of fully-charmed tetraquarks at LHC

Feng Feng·Yingsheng Huang·Yu Jia·Wen-Long Sang·De-Shan Yang·Jia-Yue Zhang
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Abstract

The $X(6900)$ resonance, originally discovered by the \texttt{LHCb} collaboration and later confirmed by both \texttt{ATLAS} and \texttt{CMS} experiments, has sparked broad interests in the fully-charmed tetraquark states. Relative to the mass spectra and decay properties of fully-heavy tetraquarks, our knowledge on their production mechanism is still rather limited. In this work we investigate the inclusive production of fully-charmed $S$-wave tetraquarks at \texttt{LHC} within the nonrelativistic QCD (NRQCD) factorization framework. The partonic cross sections are computed at lowest order in $\alpha_s$ and velocity, while the long-distance NRQCD matrix elements are estimated from phenomenological potential models. We predict the differential $p_T$ spectra of various fully-charmed $S$-wave tetraquarks at the \texttt{LHC}, and compare with the results predicted from the fragmentation mechanism at large $p_T$ end.

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Feng Feng, Yingsheng Huang, Yu Jia, Wen-Long Sang, De-Shan Yang, Jia-Yue Zhang. 2023-04-21. Inclusive production of fully-charmed tetraquarks at LHC. https://arxiv.org/abs/2304.11142

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