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B-meson gateways to missing charmonium levels.

Estia J Eichten1, Kenneth Lane, Chris Quigg

  • 1Theoretical Physics Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USA. eichten@fnal.gov

Physical Review Letters
|October 26, 2002
PubMed
Summary
This summary is machine-generated.

Researchers propose a strategy to find four narrow charmonium states using B-meson decays. Observing these states offers new tests for heavy quarkonia theories.

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Area of Science:

  • Particle Physics
  • Quantum Chromodynamics
  • Hadron Spectroscopy

Background:

  • Charmonium states are crucial for understanding quantum chromodynamics.
  • Four narrow charmonium states (eta_c(2S), h_c, eta_c2, psi_2) below the charm threshold are predicted but not yet definitively observed.
  • B-meson decays are a promising source for discovering new heavy quarkonium states.

Purpose of the Study:

  • To propose a coherent strategy for the exploration of four specific narrow charmonium states.
  • To identify methods for detecting these states through radiative transitions and exclusive final states.
  • To provide new experimental data for testing theoretical models of heavy quarkonia.

Main Methods:

  • Exploiting B-meson decays as a production mechanism for the target charmonium states.
  • Analyzing radiative transitions between charmonium levels to identify new states.
  • Investigating exclusive final states involving kaons and pions for characteristic decay signatures.

Main Results:

  • A clear strategy is outlined for the search of eta_c(2S), h_c, eta_c2, and psi_2 charmonium states.
  • These states are predicted to be detectable through specific radiative transitions and exclusive decays.
  • The production and decay rates of these states are expected to yield crucial data.

Conclusions:

  • The proposed strategy provides a viable path to discover the remaining narrow charmonium states.
  • Experimental verification of these states will significantly advance the understanding of heavy quarkonium physics.
  • New measurements will serve as stringent tests for current theoretical frameworks in particle physics.