Heavy baryons

https://doi.org/10.1016/0146-6410(94)90053-1Get rights and content

Abstract

We review the experimental and theoretical status of baryons containing one heavy quark. The charm and bottom baryon states are classified and their mass spectra are listed. The appropriate theoretical framework for the description of heavy baryons is the Heavy Quark Effective Theory, whose general ideas and methods are introduced and illustrated in specific examples. We present simple covariant expressions for the spin wave functions of heavy baryons including p-wave baryons. The covariant spin wave functions are used to determine the Heavy Quark Symmetry structure of flavour-changing current-induced transitions between heavy baryons as well as one-pion and one-photon transitions between heavy baryons of the same flavour. We discuss 1mQ corrections to the current-induced transitions as well as the structure of heavy to light baryon transitions. Whenever possible we attempt to present numbers to compare with experiment by making use of further model-dependent assumptions as e.g. the constituent picture for light quarks. We highlight recent advances in the theoretical understanding of the inclusive decays of hadrons containing one heavy quark including polarization. For exclusive semileptonic decays we discuss rates, angular decay distributions and polarization effects. We provide an update of the experimental and theoretical status of lifetimes of heavy baryons and of exclusive nonleptonic two body decays of charm baryons.

References (170)

  • D. Decamp

    Phys. Lett.

    (1992)
    P. Acton

    Phys. Lett.

    (1992)
    D. Buskulic

    Phys. Lett.

    (1992)
    P. Abreu

    Phys. Lett.

    (1993)
  • F. Bloch et al.

    Phys. Rev.

    (1937)
  • N. Bogoliubov et al.

    Introduction to the Theory of Quantized Fields

    (1959)
  • W. Kwong et al.

    Ann. Rev. Nucl. Part. Sci.

    (1987)
  • H. Albrecht

    Phys. Lett.

    (1992)
  • M.J. Savage et al.

    Phys. Lett.

    (1990)
    M. White et al.

    Phys. Lett.

    (1991)
  • N. Isgur et al.

    Nucl. Phys.

    (1991)
    H. Georgi

    Nucl. Phys.

    (1991)
    T. Mannel et al.

    Nucl. Phys.

    (1991)
  • E. Eichten et al.

    Phys. Lett.

    (1990)
    A. Falk et al.

    Nucl. Phys.

    (1991)
  • H. Georgi et al.

    Phys. Lett.

    (1990)
  • L.A. Copley et al.

    Phys. Rev.

    (1979)
  • H. Albrecht

    Phys. Lett.

    (1993)
  • P.L. Frabetti

    Fermilab preprint, FERMILAB-PUB-93-323-E

    (1993)
  • H.F. Jones

    Groups, Representations and Physics

    (1990)
  • J.T. Gudehus

    Phys. Rev.

    (1969)
  • A.F. Falk

    Nucl. Phys.

    (1992)
  • J.G. Körner

    Nucl. Phys.

    (1991)
  • K. Zalewski

    Phys. Lett.

    (1991)
  • N. Isgur et al.

    Phys. Lett.

    (1991)
  • H.D. Politzer

    Phys. Lett.

    (1990)
  • F. Hussain et al.

    Nucl. Phys.

    (1992)
  • J.D. BjorkenJ.D. Bjorken et al.

    Nucl. Phys.

    (1992)
  • Q.P. Xu

    Phys. Rev.

    (1993)
  • F. Hussain et al.

    Phys. Lett.

    (1990)
  • Q.P. Xu et al.

    Phys. Rev.

    (1992)
  • C. Carone et al.

    Phys. Lett.

    (1994)
  • C.K. Chow et al.

    Caltech preprint, CALT-68-1919

    (1994)
  • Hai-Yang Cheng et al.

    Phys. Rev.

    (1992)
  • K. Zalewski
  • A.F. Falk et al.

    SLAC Preprint, SLAC-PUB-6311

    (1993)
  • J.G. Körner et al.

    Phys. Rev.

    (1993)
  • A. Ali et al.

    Nucl. Phys.

    (1979)
    N. Cabibbo et al.

    Nucl. Phys.

    (1979)
    G. Corbo

    Nucl. Phys.

    (1983)
  • J. Chay et al.

    Phys. Lett.

    (1990)
  • I.I. Bigi et al.

    Phys. Rev. Lett.

    (1993)
    B. Blok et al.

    NSF-ITP-93068

    (1993)
    A. Manohar et al.

    Phys. Rev.

    (1994)
    A.F. Falk et al.

    UCSD/PTH 93-23

    (1993)
    T. Mannel

    IKDA 93/26

    (1993)
  • M. Neubert

    CERN preprint, CERN-TH.7087/93

    (November 1993)
    A.F. Falk et al.

    UCSD-PTH-93-38

    (December 1993)
    M. Neubert

    CERN preprint, CERN-TH.7113/93

    (December 1993)
    I.I. Bigi et al.

    TPI-MINN-93/60-T, UMN-TH-1231-93, CERN-TH.7129/93

    (December 1993)
  • C. Csaki et al.

    preprint CTP-2262

    (1993)
  • I. Bigi et al.

    CERN-TH.7159/94, TPI-MINN-94/2-T, UMN-TH-1235-94, UND-HEP-94-BIG02

    (1994)
    A.F. Falk et al.

    Phys. Rev.

    (1993)
  • L. Koyrakh, Minnesota preprint TPI-MINN-93/47-T S. Balk, J.G. Körner, D. Pirjol and K. Schilcher, Mainz preprint...
  • H. Albrecht

    Phys. Lett.

    (1989)
  • S. Songhera

    Phys. Rev.

    (1993)
  • J.G. Körner et al.

    Z. Phys.

    (1988)
    J.G. Körner et al.

    erratum

    Z. Phys.

    (1989)
  • J.J. Aubert

    Phys. Rev. Lett.

    (1974)
  • J.E. Augustin

    Phys. Rev. Lett.

    (1974)
  • E.G. Cazzoli

    Phys. Rev. Lett.

    (1975)
  • G. Goldhaber

    Phys. Rev. Lett.

    (1976)
  • I. Peruzzi

    Phys. Rev. Lett.

    (1976)
  • K. Niu et al.

    Prog. Theor. Phys.

    (1971)
  • S.W. Herb

    Phys. Rev. Lett.

    (1977)
    W.R. Innes

    Phys. Rev. Lett.

    (1977)
    W.R. Innes

    Phys. Rev. Lett.

    (1977)
  • S. Behrends

    Phys. Rev. Lett.

    (1983)
    R. Giles

    Phys. Rev.

    (1984)
  • H. Albrecht

    Phys. Lett.

    (1987)
  • Cited by (364)

    View all citing articles on Scopus
    View full text