Anomalous magnetic moments for uncharmed and charmed baryons

1984 ◽  
Vol 62 (2) ◽  
pp. 123-125
Author(s):  
Ram Sagar ◽  
R. C. Verma
Keyword(s):  
Symmetry Breaking ◽  
Sum Rules ◽  
Magnetic Moments ◽  
Charmed Baryons

We studied anomalous magnetic moments of the baryons using Drell–Hearn sum rules and found that the observed moments agree better in the presence of symmetry breaking effects.

scholarly journals Charmed baryon decay to a strange baryon plus a pion using QCD sum rules

2019 ◽  
Vol 34 (03n04) ◽  
pp. 1950015 ◽  
Author(s):  
Leonard S. Kisslinger ◽  
Bijit Singha
Keyword(s):  
Sum Rules ◽  
Qcd Sum Rules ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Strange Baryon ◽  
Weak Decays ◽  
Baryon Decay

This is an extension of the prediction of strange baryon decays to the decays of charmed baryons using QCD sum rules. Using QCD sum rules, we estimate the decay [Formula: see text]. Although some weak decays of the [Formula: see text] have been measured, since it is difficult to measure [Formula: see text] our estimates should be useful for future experiments.

scholarly journals Magnetic moments of Δ++ and from QCD sum rules

1998 ◽  
Vol 419 (1-4) ◽  
pp. 14-18 ◽  
Author(s):  
Frank X. Lee
Keyword(s):  
Sum Rules ◽  
Magnetic Moments ◽  
Qcd Sum Rules

scholarly journals BARYONS AS THREE-FLAVOR SOLITONS

1996 ◽  
Vol 11 (14) ◽  
pp. 2419-2544 ◽  
Author(s):  
HERBERT WEIGEL
Keyword(s):  
Symmetry Breaking ◽  
Vector Meson ◽  
Degrees Of Freedom ◽  
Magnetic Moments ◽  
Axial Vector ◽  
Vector Current ◽  
Bound State ◽  
Axial Vector Current ◽  
Flavor Symmetry ◽  
Matrix Elements

The description of baryons as soliton solutions of effective meson theories for three-flavor (up, down and strange) degrees of freedom is reviewed and the phenomenological implications are illuminated. In the collective approach the soliton configuration is equipped with baryon quantum numbers by canonical quantization of the coordinates describing the flavor orientation. The baryon spectrum resulting from exact diagonalization of the collective Hamiltonian is discussed. The prediction of static properties, such as the baryon magnetic moments and the Cabibbo matrix elements for semileptonic hyperon decays, are explored with regard to the influence of flavor symmetry breaking. In particular, the role of strange degrees of freedom in the nucleon is investigated for both the vector and axial vector current matrix elements. The latter are discussed extensively within the context of the proton spin puzzle. The influence of flavor symmetry breaking on the shape of the soliton is examined, and observed to cause significant deviations from flavor-covariant predictions on the baryon magnetic moments. Short range effects are incorporated by a chirally invariant inclusion of vector meson fields. These extensions are necessary for properly describing the singlet axial vector current and the neutron–proton mass difference. The effects of the vector meson excitations on baryon properties are also considered. The bound state description of hyperons and its generalization to baryons containing a heavy quark are illustrated. In the case of the Skyrme model a comparison is made between the collective quantization scheme and the bound state approach. Finally, the Nambu–Jona-Lasinio model is employed to demonstrate that hyperons can be described as solitons in a microscopic theory of the quark flavor dynamics. This is explained for both the collective and the bound state approaches to strangeness.

scholarly journals SU(2) symmetry breaking from QCD sum rules

1984 ◽  
Vol 135 (5-6) ◽  
pp. 463-467 ◽  
Author(s):  
E. Bagan ◽  
A. Bramon ◽  
S. Narison ◽  
N. Paver
Keyword(s):  
Symmetry Breaking ◽  
Sum Rules ◽  
Qcd Sum Rules

Sum rules and systematics for baryon magnetic moments

1984 ◽  
Vol 241 (2) ◽  
pp. 477-492 ◽  
Author(s):  
Harry J. Lipkin
Keyword(s):  
Sum Rules ◽  
Magnetic Moments

New relations between Borel sum rules for the magnetic moments of the Σ0 and Λ hyperons

2005 ◽  
Vol 68 (2) ◽  
pp. 279-285 ◽  
Author(s):  
V. S. Zamiralov ◽  
A. Özpineci ◽  
S. B. Yakovlev
Keyword(s):  
Sum Rules ◽  
Magnetic Moments

BrokenSU(3)Symmetry, Sum Rules, and the Magnetic Moments of the Baryons

1968 ◽  
Vol 172 (5) ◽  
pp. 1635-1645 ◽  
Author(s):  
T. P. Cheng ◽  
Heinz Pagels
Keyword(s):  
Sum Rules ◽  
Magnetic Moments
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