Form - factors and current correlators : chiral couplings L r 10 ( μ ) and C r 87 ( μ ) at NLO in 1 / N C

Form - factors and current correlators : chiral couplings L r 10 ( μ ) and C r 87 ( μ ) at NLO in 1 / N

Using the resonance chiral theory Lagrangian, we perform a calculation of the vector and axial-vector two-point functions at the next-to-leading order (NLO) in the 1/NC expansion. We have analyzed these correlators within the singleresonance approximation and have also investigated the corrections induced by a second multiplet of vector and axial-vector resonance states. Imposing the correct QC...

Towards a determination of the chiral couplings at NLO in 1 / N C : L r 8 ( μ ) and C r 38 ( μ )

From Hadronic τ Decays to the Chiral Couplings L r 10 and Cr 87 ∗

A sum rule analysis of the hadronic τ -decay data can be used to determine the low-energy constants Lr10(μ) and C 87(μ). These constants are QCD chiral-order parameters, which appear at order p 4 and p, respectively, in the chiral perturbation theory expansion of the V −A correlator. At order p we obtain Lr10(Mρ) = −(5.22±0.06)·10 −3 . Including in the analysis the order p contributions, we get...

Self-assembled polymers of silver(I) with a chiral diphosphine ligand.

Silver(I) salts, AgX, form self-assembled polymers with the chiral diphosphine ligand R,R-trans-C(6)H(10)(NHCO-2-C(6)H(4)PPh(2))(2), 1, of formula {Ag(2)X(2)(μ-1)}(n) and ring-opening polymerization of the trans chelate complex [Ag(1)]X has given the helical polymer [{Ag(μ-1)}(n)]X(n), when X = CF(3)SO(3).

Chiral effective field theory predictions for muon capture on deuteron and {3}He.

The muon-capture reactions {2}H(μ{-},ν{μ})nn and {3}He(μ{-},ν{μ}){3}H are studied with nuclear potentials and charge-changing weak currents, derived in chiral effective field theory. The low-energy constants (LECs) c{D} and c{E}, present in the three-nucleon potential and (c{D}) axial-vector current, are constrained to reproduce the A=3 binding energies and the triton Gamow-Teller matrix elemen...