Distribution amplitudes and decay constants for ({pi},K,{rho},K*) mesons in the lightfront quark model
Abstract
We present a calculation of the quark distribution amplitudes (DAs), the Gegenbauer moments, and decay constants for {pi}, {rho}, K, and K* mesons using the lightfront quark model. While the quark DA for {pi} is somewhat broader than the asymptotic one, that for {rho} meson is very close to the asymptotic one. The quark DAs for K and K* show asymmetric form due to the flavor SU(3)symmetry breaking effect. The decay constants for the transversely polarized {rho} and K* mesons (f{sub {rho}}{sup T} and f{sub K*}{sup T}) as well as the longitudinally polarized ones (f{sub {rho}} and f{sub K*}) are also obtained. Our averaged values for f{sub V}{sup T}/f{sub V}, i.e. (f{sub {rho}}{sup T}/f{sub {rho}}){sub av}=0.78 and (f{sub K*}{sup T}/f{sub K*}){sub av}=0.84, are found to be consistent with other model predictions. Especially, our results for the decay constants are in good agreement with the SU(6) symmetry relation, f{sub {rho}}{sub (K*)}{sup T}=(f{sub {pi}}{sub (K)}+f{sub {rho}}{sub (K*)})/2.
 Authors:
 Department of Physics, Teachers College, Kyungpook National University, Daegu, 702701 (Korea, Republic of)
 Department of Physics, North Carolina State University, Raleigh, North Carolina 276958202 (United States)
 Publication Date:
 OSTI Identifier:
 21010995
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.75.034019; (c) 2007 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; ASYMMETRY; DECAY AMPLITUDES; DISTRIBUTION; FLAVOR MODEL; K*892 MESONS; KAONS; PIONS; POLARIZATION; QUARK MODEL; QUARKS; RHO770 MESONS; SU3 GROUPS; SU6 GROUPS; SYMMETRY BREAKING
Citation Formats
Choi, HoMeoyng, and Ji, ChuengRyong. Distribution amplitudes and decay constants for ({pi},K,{rho},K*) mesons in the lightfront quark model. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.034019.
Choi, HoMeoyng, & Ji, ChuengRyong. Distribution amplitudes and decay constants for ({pi},K,{rho},K*) mesons in the lightfront quark model. United States. doi:10.1103/PHYSREVD.75.034019.
Choi, HoMeoyng, and Ji, ChuengRyong. Thu .
"Distribution amplitudes and decay constants for ({pi},K,{rho},K*) mesons in the lightfront quark model". United States.
doi:10.1103/PHYSREVD.75.034019.
@article{osti_21010995,
title = {Distribution amplitudes and decay constants for ({pi},K,{rho},K*) mesons in the lightfront quark model},
author = {Choi, HoMeoyng and Ji, ChuengRyong},
abstractNote = {We present a calculation of the quark distribution amplitudes (DAs), the Gegenbauer moments, and decay constants for {pi}, {rho}, K, and K* mesons using the lightfront quark model. While the quark DA for {pi} is somewhat broader than the asymptotic one, that for {rho} meson is very close to the asymptotic one. The quark DAs for K and K* show asymmetric form due to the flavor SU(3)symmetry breaking effect. The decay constants for the transversely polarized {rho} and K* mesons (f{sub {rho}}{sup T} and f{sub K*}{sup T}) as well as the longitudinally polarized ones (f{sub {rho}} and f{sub K*}) are also obtained. Our averaged values for f{sub V}{sup T}/f{sub V}, i.e. (f{sub {rho}}{sup T}/f{sub {rho}}){sub av}=0.78 and (f{sub K*}{sup T}/f{sub K*}){sub av}=0.84, are found to be consistent with other model predictions. Especially, our results for the decay constants are in good agreement with the SU(6) symmetry relation, f{sub {rho}}{sub (K*)}{sup T}=(f{sub {pi}}{sub (K)}+f{sub {rho}}{sub (K*)})/2.},
doi = {10.1103/PHYSREVD.75.034019},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 75,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}

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