Quadrupole moments of low lying baryons with spin 1/2^+, spin 3/2^+, and spin 3/2^+ \to 1/2^+ transitions

Abstract

The chiral constituent quark model (χCQM) with general parameterization (GP) method has been formulated to calculate the quadrupole moments of the spin 3 2 + decuplet baryons andThe implications of such a model have been investigated in detail for the effects of symmetry breaking and GP parameters pertaining to the two-and three-quark contributions. It is found that the χCQM is successful in giving a quantitative and qualitative description of the quadrupole moments.

Ernest Henley and the shape of baryons

“…Electric quadrupole moments and their generalization to quadrupole form factors have been the focus of numerous works [37][38][39][40][41][42][43][44] and several reviews [45][46][47][48][49].…”

Octet to decuplet electromagnetic transition in a relativistic quark model

“…[4][5][6][7][8].) In the past, several theoretical studies of the octet to decuplet electromagnetic transitions were performed in nonrelativistic and relativistic quark models [9][10][11][12][13][14][15][16][17][18][19], Skyrme and soliton models [20][21][22], QCD sum rules [23], chiral perturbation theory [24][25][26], large N c limit [27], algebraic models of hadron structure [28], and lattice QCD [29]. In particular, lattice QCD studies for the γ * N → ∆ reaction can be found in Refs.…”

Electromagnetic Multipole Moments of Baryons

“…Presently, we have no direct experimental information on these moments, but it is planned to measure the quadrupole moment of the Ω − baryon at FAIR in Darmstadt [1]. This is contrasted by several theoretical works on baryon quadrupole moments [2][3][4][5][6][7][8][9][10] and relatively few on magnetic octupole moments [9][10][11][12].…”