Wave-function mixing of flavor-degenerate baryons

Magnetic moments ofΞQ′−ΞQtransitions in light cone QCD

“…Our prediction for the Ξ 0− b -Ξ − b transition is very close to the results of [18] and [21], but considerably different from that of [20]. As far as the Ξ 00 c -Ξ 0 c transition is concerned, our result confirms the prediction of [19]-it is approximately 1.5 times smaller than that of [22], two times Q -Ξ 0 Q transition magnetic moments predicted by the light cone QCD sum rules (our result), effective quark mass scheme [18,19], screened quark charge scheme [18,19], bag model [20], nonrelativistic quark model [21], and chiral constituent quark model [22] approaches in units of nuclear magneton μ N . The first (second) column of [18] ( [19]) corresponds the effective quark mass (screened quark charge) scheme.…”

“…The first (second) column of [18] ( [19]) corresponds the effective quark mass (screened quark charge) scheme. larger than that of [21] and 10 times larger than the results predicted in [20]. Finally, we express our concluding remarks about the present work, in which we calculate the magnetic moments of the Ξ 00 Q -Ξ 0 Q (Q ¼ b or c) transitions within the framework of light cone QCD sum rules.…”

“…We see from these figures that the working region for β in the b-baryon case is −0.5 ≤ cos θ ≤ −0.1, and for the baryons containing c-quark, it is −0.4 ≤ cos θ ≤ 0.1. We deduce from these figures the following values for the Ξ 00 Q -Ξ 0 Q transition magnetic moments: μ Ξ 00 Table 1 we present our results on the transition magnetic moments together with the ones predicted by different approaches, such as the effective quark mass and screened quark charge scheme (for the b-hadron sector see [18], for the c-hadron sector see [19]), bag model [20], nonrelativistic quark model [21], and chiral constituent quark model [22].…”

Feasibility of measuring the magnetic dipole moments of the charm baryons at the LHC using bent crystals

“…In particular, for the charm baryons, the spin and flavor structure of the ground-state baryons Λ + c and Ξ + c implies that (see, e.g., ref. and take "effective" mass of the c-quark m c = 1.6 GeV as suggested from the charmonia spectroscopy [5]. Keeping explicitly the g-factor of the charm quark we can write where the first numbers in each quantity in (1.5) come from the u and s quarks, and the second -from the c quark.…”

“…There has been many calculations of the MDM of the charm baryons in various models of their structure [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. As for the Λ + c baryon, majority of the calculations predict the MDM and g-factor in the ranges Thus, an experimental study of the MDM of heavy baryons can be useful to distinguish between different theoretical approaches.…”