Forming Molecular States with Hadronic Rescattering

Abstract

A method for modelling the prompt production of molecular states using the hadronic rescattering framework of the general-purpose Pythia event generator is introduced. Production cross sections of possible exotic hadronic molecules via hadronic rescattering at the LHC are calculated for the ${\chi }_{c1}(3872)$ resonance, a possible tetraquark state, as well as three possible pentaquark states, $P_c^{+}(4312)$, $P_c^{+}(4440)$, and $P_c^{+}(4457)$. For the $P_c^{+}$ states, the expected cross section from ${\Lambda }_b$ decays is compared to the hadronic-rescattering production. The ${\chi }_{c1}(3872)$ cross section is compared to the fiducial ${\chi }_{c1}(3872)$ cross-section measurement by LHCb and found to contribute at a level of O(1%). Finally, the expected yields of $P_c^{+}$ production from hadronic rescattering during Run 3 of LHCb are estimated. The prompt background is found to be significantly larger than the prompt $P_c^{+}$ signal from hadronic rescattering.

18 pages, 6 figures

References in corpus (11)

• An Introduction to PYTHIA 8.2
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Hadro-Charmonium
• Is the X(3872) Production Cross Section at Tevatron Compatible with a Hadron Molecule Interpretation?
• Heavy quark spin symmetric molecular states from ${\bar{D}}^{(\ast )}{\Sigma }_c^{(\ast )}$ and other coupled channels in the light of the recent LHCb pentaquarks
• Interpretation of the LHCb $P_c$ States as Hadronic Molecules and Hints of a Narrow $P_c(4380)$
• A Theory of X and Z Multiquark Resonances
• Note on X(3872) production at hadron colliders and its molecular structure
• Measurement of the inelastic $pp$ cross-section at a centre-of-mass energy of $\sqrt{s}=7$ TeV
• Production of charm-strange hadronic molecules at the LHC
• Prompt production of the hidden charm pentaquarks in the LHC

Cited by in corpus (3)

• Event Generators for High-Energy Physics Experiments
• QED theory of the nuclear recoil with finite size
• Structure and production mechanism of the enigmatic $X(3872)$ in high-energy hadronic reactions