ar X iv : h ep - p h / 95 06 26 7 v 1 8 J un 1 99 5 On Continuous Ambiguities in Model - Independent Partial Wave Analysis
نویسنده
چکیده
A problem of amplitude reconstruction in terms of the given angular distribution is considered. Solution of this problem is not unique. A class of amplitudes, correspondent to one and the same angular distribution, forms a region in projection onto a finite set of spherical harmonics. An explicit parametrization of a boundary of the region is obtained. A shape of the region of ambiguities is studied in particular example. A scheme of partial-wave analysis, which describes all solutions in the limits of the region, is proposed. I. Let a quantum system, described by a wave function Ψ, decay into 2 spinless particles. We are studying angular distribution of decay products in the rest frame of initial state
منابع مشابه
ar X iv : h ep - p h / 95 06 26 8 v 1 8 J un 1 99 5 On Continuous Ambiguities in Model - Independent Partial Wave Analysis - II
A problem of density matrix determination in terms of the given angular distribution of decay products is considered. In the first part of this paper (Section III) a quantum system, described by density matrix, has been considered. In this the density matrix was diagonal with respect to orbital quantum numbers and the state was mixed only partially. Now we will consider the process X → 0 + 0, w...
متن کاملar X iv : h ep - p h / 95 06 25 9 v 1 7 J un 1 99 5 CERN – TH / 95 – 83 hep - ph / 9506259 May 1995 MULTIPLE HARD
متن کامل
ar X iv : h ep - t h / 95 06 05 3 v 1 8 J un 1 99 5 STRINGS AND DISSIPATIVE MECHANICS
Noncritical strings in the " coupling constant " phase space and bosonic string in the affine-metric curved space are dissipative systems. But the quantum descriptions of the dissipative systems have well known ambiguities. We suggest some approach to solve the problems of this description. The generalized Poisson algebra for dissipative systems is considered.
متن کاملar X iv : h ep - t h / 95 06 05 1 v 1 8 J un 1 99 5 June 1995 TAUP – 2253
We show that instantons violate a supersymmetric identity in a classically supersymmetric Higgs model with no massless fermions. This anomalous breaking arises because the correct perturbative expansion in the instanton sector is not supersymmetric. The attempt to construct a manifestly supersymmetric expansion generates infra-red divergences.
متن کاملar X iv : h ep - p h / 95 06 24 7 v 1 6 J un 1 99 5 Reason of Large Scale Difference of the Results in the nn̄ Oscillation Problem
We expose a grave drawback hidden in the standard model of n¯ n transitions in a medium. Correcting it, one improves a limit on the free-space n¯ n oscillation time τ n¯ n by 31 orders of magnitude.
متن کامل