منابع مشابه
Flavor Symmetry Breaking and Strangeness in the Nucleon
We suggest that breaking of SU(3) flavor symmetry mainly resides in the baryon wave–functions while the charge operators have no (or only small) explicit symmetry breaking components. We utilize the collective coordinate approach to chiral soliton models to support this picture. In particular we compute the gA/gV ratios for hyperon beta–decay and the strangeness contribution to the nucleon axia...
متن کاملSuppression of Flavor Symmetry Breaking in B Decay Sum Rules
While flavor symmetries are useful for studying hadronic B decays, symmetry relations for amplitudes and decay rates are usually violated by first order symmetry breaking corrections. We point out two cases in which first order symmetry breaking is suppressed by a small ratio of amplitudes: (1) An isospin sum rule for four B → Kπ decays, where isospin breaking is shown to be negligible. (2) An ...
متن کاملConfinement and Flavor Symmetry Breaking via Monopole Condensation
We discuss dynamics of N = 2 supersymmetric SU(nc) gauge theories with nf quark hypermultiplets. Upon N = 1 perturbation of introducing a finite mass for the adjoint chiral multiplet, we show that the flavor U(nf ) symmetry is dynamically broken to U(r) × U(nf − r), where r ≤ [nf/2] is an integer. This flavor symmetry breaking occurs due to the condensates of magnetic degrees of freedom which a...
متن کاملSU(2)-Flavor-Symmetry Breaking in Nuclear Antiquark Distributions
SU(2)-flavor-symmetry breaking in antiquark distributions of the nucleon was suggested by the New Muon Collaboration (NMC) in deep inelastic muon scattering. As an independent test, Drell-Yan data for the tungsten target have been used for examining the asymmetry. We investigate whether there exists significant modification of the ū− d̄ distribution in nuclei in a parton recombination model. It ...
متن کاملFlavor Symmetry Breaking and Vacuum Alignment on Orbifolds
Flavor symmetry has been widely studied for figuring out the masses and mixing angles of standard-model fermions. In this paper we present a framework for handling flavor symmetry breaking where the symmetry breaking is triggered by boundary conditions of scalar fields in extra-dimensional space. The alignment of scalar expectation values is achieved without referring to any details of scalar p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2001
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2001/11/030