Rotation-invariant relations in vector meson decays into fermion pairs

2010/05/14 by Pietro Faccioli, Carlos Lourenco, Joao Seixas · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevlett.105.061601

published as Phys.Rev.Lett.105:061601,2010

arxiv created 2010/05/14 · arxiv updated 2014/11/21

Abstract

The rotational properties of angular momentum eigenstates imply the existence of a frame-independent relation among the parameters of the decay distribution of vector mesons into fermions. This relation is a generalization of the Lam-Tung identity, a result specific to Drell-Yan production in perturbative QCD, here shown to be equivalent to the dynamical condition that the dilepton always originates from a transversely polarized photon.

Cited by

• Measurement of the Z → μ⁺μ^- angular coefficients in pp collisions at √(s) = 13 TeV as functions of transverse momentum and rapidity

Related

• Mass splitting of vector meson and spontaneous spin polarization under rotation
• Rotation-invariant observables in polarization measurements
• Angular distribution of leptons from the decay of massive vector bosons
• Dilepton angular distributions in the color-dipole S-matrix framework
• Extracting vector mesons magnetic dipole moment from radiative decays