L.M. Sehgal

Coherent π0 production in neutrino reactions

We have calculated the cross section and angular distribution of the neutral current process ν + N → ν + N + π0 involving the coherent interaction of a neutrino with a complex nucleus. A contrast is made to incoherent production ν + n → ν + n + π0 on a single nucleon. The results are compared with observations from some recent experiments.

Lepton polarization in the decays B → Xsμ+μ− and B → Xsτ+τ−

The effective Hamiltonian for the decay

CP violation in the decay K sub L r arrow. pi. sup +. pi. sup minus e+ e minus

b\to s l^+ l^-

Secondary leptons as probes of top-quark polarization in e+e−→tt

predicts a characteristic polarization for the final state lepton, which can serve as an important test of the underlying theory. The lepton polarization has, in addition to a longitudinal component

Partially conserved axial vector current and coherent pion production by low energy neutrinos

P_L

PCAC and the deficit of forward muons in π+ production by neutrinos

, two orthogonal components

Charge asymmetry and photon energy spectrum in the decay Bs→l+l−γ

P_T

Azimuthal correlation of charged leptons produced in pp→tt+…

and

Helicity-flip bremsstrahlung. An equivalent particle description with applications

P_N

Angular distribution and polarization of photons in the inclusive decay Λb → Xsγ

, lying in and perpendicular to the decay plane which are proportional to