Production of charged heavy quarkonium-like states at the LHC and the Tevatron

Abstract

We study prompt hadroproduction of the charged bottomonium-like states $Z_b^{\pm }(10610)$ and $Z_b^{\pm }(10650)$, and the charged charmonium-like states $Z_c^{\pm }(3900)$ and $Z_c^{\pm }(4020)$, at the Tevatron and the LHC, provided that these states are $S$-wave hadronic molecules. Using two Monte Carlo event generators, Herwig and Pythia, to simulate the production of heavy meson pairs, we derive an order-of-magnitude estimate of the production rates for these four particles. Our estimates yield a cross section at the nb level for the $Z_b(10610)$ and $Z_b(10650)$. The results for the $Z_c(3900)$ and $Z_c(4020)$ are larger by a factor of 20-30. These cross sections are large enough to be observed, and measurements at hadron colliders in the future will supplement the study using electron-positron collisions, and therefore allow to explore the mysterious nature of these exotic states.

5 pages, 1 figure

References in corpus (12)

• Herwig++ Physics and Manual
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• Study of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Observation of a Charged Charmonium-like State at Belle
• Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV
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• How the Z_c(3900) Reveals the Spectra of Quarkonium Hybrid and Tetraquark Mesons
• Confirming the molecular nature of the $Z_b(10610)$ and the $Z_b(10650)$
• A Mechanism for Hadron Molecule Production in p pbar(p) Collisions
• Estimating the Production Rate of Loosely-bound Hadronic Molecules using Event Generators
• Production of the Exotic $1^{--}$ Hadrons $\varphi (2170)$, X(4260) and $Y_b(10890)$ at the LHC and Tevatron via the Drell-Yan Mechanism
• Is $Z_b(10610)$ a Molecular State?
• Hadroproduction of ${\rm Y}(nS)$ above $B\bar{B}$ Thresholds and Implications for $Y_b(10890)$

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