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Showing 1 to 4 of 4 for “"Pentaquarks"”.
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Kinematic fitting of detached vertices
… aims to determine the existence of the &Xgr;5 pentaquarks and investigate the excited &Xgr; states. Specifically, the exotic X--5 pentaquark will be sought by first reconstructing the X- particle through its weak decays, X- → pi- and &Lgr; → ppi -. A kinematic fitting routine was …
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Distinguishing exotic states from scattering states in lattice QCD
… deemed infeasible by other groups searching for pentaquarks on the lattice. We restrict our system of five quarks to the quantum numbers of the O+(1540) pentaquark and get an insight into the structure of its states, calculate their energies and explore their properties. Finally, we use the …
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Search for pentaquark partners [Theta]⁺⁺, [Sigma]⁰ and N⁰ in H (e,e'K [pi])) X reactions at Jefferson Lab Hall A
… model predicted a SU(3)F flavor antide-cuplet of pentaquarks. The most striking prediction using this symmetry group is a narrow exotic state, E+(1540), which has quark component uuddg. If such a state is confirmed, other members of the antide cuplet could be expected to have sufficiently narrow …
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Observation of J/psi p resonances consistent with pentaquark states in Lambda_b^0 to J/psi K^- p decays
<p>The observation of structures consistent with charmonium-pentaquark states decaying to $J/\psi p$ in $\Lambda_b^0 \rightarrow J/\psi K^- p$ decays is presented. The data sample analyzed corresponds to an integrated luminosity of 3 $fb^{-1}$ acquired with the LHCb detector from 7 and 8 TeV $pp$ …