Torsion axial vector and Yvon-Takabayashi angle: zitterbewegung, chirality and all that

Strange axial-vector mesons mixing angle

The masses of the K1( 3P1) and K1( 1P1) are considered in a nonrelativistic constituent quark model, and the absolute value of the K1( 3P1) −K1(P1) mixing angle is determined to be about 59.29◦. Comparison of the theoretical predictions on the strong decay widths of the K1(1270) and K1(1400) in the 3P0 decay model as well as the production ratio of these two states in the τ decay between the av...

Dark Chocolate and Metabolic Syndrome; Do Polyphenols All that Matter?

Twisting nanotubes: from torsion to chirality.

An intriguing aspect of torsion, especially for chemists, is the fact that, unlike stretching, bending, shear, uniaxial, radial or isotropic compression, expansion etc, torsion is the only mode of deformation that is intrinsically chiral. Hence, torsion can turn achiral objects into chiral ones, and it can discriminate between chiral enantiomorphs turning them diastereomorphous. Beside this uni...

Symmetries for Vector and Axial - Vector Mesons ∗

We discuss the possible symmetries of the effective lagrangian describing interacting pseudoscalar-, vector-, and axial-vector mesons. Specific choices of the parameters give rise to an [SU(2) ⊗ SU(2)] symmetry. This symmetry can be obtained either á la Georgi, with all states in the spectrum remaining massless, or in a new realization, implying decoupling of the pseudoscalar bosons from degene...

Scalar and axial-vector mesons

Almost thirty years ago, Penny G. Estabrooks asked “Where and what are the scalar mesons?” [1]. The first part of her question can now be confidently responded [2]. However, with respect to the “What” many puzzles remain unanswered. Scalar and axial-vector mesons form part of a large family of mesons. Consequently, though it is useful to pay them some extra attention, there is no point in discu...