Measurement of theΩ−magnetic moment

Abstract

A sample of 24700 n ~ hyperons was produced by a polarized neutral beam in a spin-transfer reaction, The n ~ polarizations are found to be -0.054 ±0.019 and -0.149 ±0.055 at mean fl ~ momenta of 322 and 398 GeV/c, respectively. The directions of these polarizations give an n ~ magnetic moment of -1.94 ± 0.17 ± 0.14 nuclear magnetons.

Sum rules for baryon decuplet magnetic moments

“…The measurements of the baryon decuplet magnetic moments were reported for [3] and ÿ [4] to yield a new avenue for understanding the hadron structure. The magnetic moments of baryon decuplet have been theoretically investigated in several models such as the quenched lattice gauge theory [5], the quark models [6], the chiral bag model [7], the chiral perturbation theory [8], the QCD sum rules [9], the chiral quark model [10], and the chiral quark soliton model [11].…”

Measurement of Decay Parameters forΞ−→Λπ−Decay

“…In this Letter we report a new measurement of φ Ξ from a data set of 1.35 million polarized Ξ − → Λπ − decays. Our data come from Experiment 756 at Fermi National Accelerator Laboratory [13][14][15][16]. Polarized Ξ − hyperons with transverse momenta p T spanning 0.5 to 1.5 GeV/c and momentum fraction x F from 0.3 to 0.7 were produced by the collision of unpolarized 800-GeV/c protons incident upon a beryllium target at an angle with respect to the vertical axis.…”

Effects of the magnetic dipole moment of charged vector mesons in their radiative decay distribution

“…As an application of this method, the angular distribution of soft photons emitted in Ω − → ΛK − decays has been computed in order to study the sensitivity to the anomalous magnetic moment of Ω − [4]. The results obtained with this method, however, are not competitive with the precision attained [5] using the usual spin precession technique [2].…”