Prompt $J/\psi$ production in associated with top quark pair at the LHC
Phys. Rev. D 100, 074019 (2019) In this work, we investigate the prompt $J/\psi$ production in associated with top quark pair to leading order in the nonrelativistic QCD factorization formalism at the LHC with $\sqrt{s} =13$ TeV. In addition to the contribution from direct $J/\psi$ production, we al...
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Main Authors | , , , |
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Format | Journal Article |
Language | English |
Published |
23.04.2019
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Subjects | |
Online Access | Get full text |
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Summary: | Phys. Rev. D 100, 074019 (2019) In this work, we investigate the prompt $J/\psi$ production in associated
with top quark pair to leading order in the nonrelativistic QCD factorization
formalism at the LHC with $\sqrt{s} =13$ TeV. In addition to the contribution
from direct $J/\psi$ production, we also include the indirect contribution from
the directly produced heavier charmmonia $\chi_{cJ}$ and $\psi^\prime$. We
present the numerical results for the total and differential cross sections and
find that the $\sideset{^3}{^{(8)}_1}{\mathop{{S}}}$ states give the dominant
contributions. The prompt $t\bar t J/\psi$ signatures at the LHC are analyzed
in the tetralepton channel $pp\to (t\to W^+(\ell^+\nu)b) (\bar t \to W^-(\ell^-
\bar \nu)\bar b) (J/\psi\to\mu^+\mu^-)$ and trilepton channel $pp\to (t\to W(q
q^\prime)b) ( t \to W(\ell \nu) b) (J/\psi\to\mu^+\mu^-)$, with the $J/\psi$
mesons decaying into muon pair, and the top quarks decaying leptonically or
hadronically. We find that $t\bar t J/\psi$ proudction can be potentially
detected at the LHC, whose measurement is useful to test the heavy quarkonium
production mechanism. |
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DOI: | 10.48550/arxiv.1904.10198 |