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Title: Note on helicity amplitudes in D{yields}V semileptonic decays

Abstract

Motivated by the recent extraction of the helicity amplitudes for the D{sup +}{yields}K*{sup 0}{mu}{nu}{sub {mu}} decay, done by the FOCUS collaboration, we determine helicity amplitudes for the D{sup +}{yields}K*{sup 0}l{nu}{sub l}, D{sup +}{yields}{rho}{sup 0}l{nu}{sub l} and D{sub s}{sup +}{yields}{phi}l{nu}{sub l} semileptonic decays using the knowledge of the relevant form factors. The vector and axial form factors for D{yields}Vl{nu}{sub l} decays are parametrized by including contributions of charm meson resonances and using the HQET and SCET limits. In the case that the vector form factor receives contributions from two poles while axial form factors are dominated by a single pole for D{sup +}{yields}K*{sup 0}l{nu}{sub l}, we obtain better agreement with the experimental result then when all of them are dominated by single poles.

Authors:
 [1];  [2];  [1]
  1. J. Stefan Institute, Jamova 39, P. O. Box 3000, 1001 Ljubljana (Slovenia)
  2. (Slovenia)
Publication Date:
OSTI Identifier:
20776915
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.73.057503; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; D PLUS MESONS; D S MESONS; FORM FACTORS; HELICITY; K*-892 MESONS; NEUTRINOS; PHI-1020 MESONS; PHI-1680 MESONS; RESONANCE PARTICLES; RHO-770 MESONS; SEMILEPTONIC DECAY; VECTORS

Citation Formats

Fajfer, Svjetlana, Department of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, and Kamenik, Jernej. Note on helicity amplitudes in D{yields}V semileptonic decays. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.057503.
Fajfer, Svjetlana, Department of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, & Kamenik, Jernej. Note on helicity amplitudes in D{yields}V semileptonic decays. United States. doi:10.1103/PhysRevD.73.057503.
Fajfer, Svjetlana, Department of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, and Kamenik, Jernej. Wed . "Note on helicity amplitudes in D{yields}V semileptonic decays". United States. doi:10.1103/PhysRevD.73.057503.
@article{osti_20776915,
title = {Note on helicity amplitudes in D{yields}V semileptonic decays},
author = {Fajfer, Svjetlana and Department of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana and Kamenik, Jernej},
abstractNote = {Motivated by the recent extraction of the helicity amplitudes for the D{sup +}{yields}K*{sup 0}{mu}{nu}{sub {mu}} decay, done by the FOCUS collaboration, we determine helicity amplitudes for the D{sup +}{yields}K*{sup 0}l{nu}{sub l}, D{sup +}{yields}{rho}{sup 0}l{nu}{sub l} and D{sub s}{sup +}{yields}{phi}l{nu}{sub l} semileptonic decays using the knowledge of the relevant form factors. The vector and axial form factors for D{yields}Vl{nu}{sub l} decays are parametrized by including contributions of charm meson resonances and using the HQET and SCET limits. In the case that the vector form factor receives contributions from two poles while axial form factors are dominated by a single pole for D{sup +}{yields}K*{sup 0}l{nu}{sub l}, we obtain better agreement with the experimental result then when all of them are dominated by single poles.},
doi = {10.1103/PhysRevD.73.057503},
journal = {Physical Review. D, Particles Fields},
number = 5,
volume = 73,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2006},
month = {Wed Mar 01 00:00:00 EST 2006}
}