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Title: Polarization effects in radiative decay of a polarized τ lepton

Abstract

The polarization effects in the one-meson radiative decay of a polarized τ lepton, τ → π{sup −}γν{sub τ}, are investigated. The inner bremsstrahlung and structural amplitudes are taken into account. The asymmetry of the differential decay width caused by the τ-lepton polarization and the Stokes parameters of the emitted photon itself are calculated depending on the polarization of the decaying τ lepton. These physical quantities are estimated numerically for an arbitrary direction of the τ lepton polarization 3-vector in the rest frame. The vector and axial-vector form factors describing the structure-dependent part of the decay amplitude are determined using the chiral effective theory with resonances (RχT)

Authors:
; ; ;  [1]
  1. NSC “Kharkov Institute of Physics and Technology” (Ukraine)
Publication Date:
OSTI Identifier:
22472399
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; CHIRALITY; DECAY AMPLITUDES; FORM FACTORS; INTERNAL BREMSSTRAHLUNG; MESONS; PHOTONS; PIONS MINUS; POLARIZATION; RADIATIVE DECAY; RESONANCE PARTICLES; STOKES PARAMETERS; TAU NEUTRINOS; TAU PARTICLES

Citation Formats

Gakh, G. I., Konchatnij, M. I., E-mail: konchatnij@kipt.kharkov.ua, Korchin, A. Yu., and Merenkov, N. P., E-mail: merenkov@kipt.kharkov.ua. Polarization effects in radiative decay of a polarized τ lepton. United States: N. p., 2015. Web. doi:10.1134/S1063776115020120.
Gakh, G. I., Konchatnij, M. I., E-mail: konchatnij@kipt.kharkov.ua, Korchin, A. Yu., & Merenkov, N. P., E-mail: merenkov@kipt.kharkov.ua. Polarization effects in radiative decay of a polarized τ lepton. United States. doi:10.1134/S1063776115020120.
Gakh, G. I., Konchatnij, M. I., E-mail: konchatnij@kipt.kharkov.ua, Korchin, A. Yu., and Merenkov, N. P., E-mail: merenkov@kipt.kharkov.ua. Sun . "Polarization effects in radiative decay of a polarized τ lepton". United States. doi:10.1134/S1063776115020120.
@article{osti_22472399,
title = {Polarization effects in radiative decay of a polarized τ lepton},
author = {Gakh, G. I. and Konchatnij, M. I., E-mail: konchatnij@kipt.kharkov.ua and Korchin, A. Yu. and Merenkov, N. P., E-mail: merenkov@kipt.kharkov.ua},
abstractNote = {The polarization effects in the one-meson radiative decay of a polarized τ lepton, τ → π{sup −}γν{sub τ}, are investigated. The inner bremsstrahlung and structural amplitudes are taken into account. The asymmetry of the differential decay width caused by the τ-lepton polarization and the Stokes parameters of the emitted photon itself are calculated depending on the polarization of the decaying τ lepton. These physical quantities are estimated numerically for an arbitrary direction of the τ lepton polarization 3-vector in the rest frame. The vector and axial-vector form factors describing the structure-dependent part of the decay amplitude are determined using the chiral effective theory with resonances (RχT)},
doi = {10.1134/S1063776115020120},
journal = {Journal of Experimental and Theoretical Physics},
number = 2,
volume = 120,
place = {United States},
year = {Sun Feb 15 00:00:00 EST 2015},
month = {Sun Feb 15 00:00:00 EST 2015}
}