Twist-3 distribution amplitudes of the pion and kaon from the QCD sum rules

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dc.creatorHuang, Tao
dc.creatorZhou, Ming-Zhen
dc.creatorWu, Xing-Hua
dc.date2005-01-06
dc.date2005-05-11
dc.date.accessioned2026-07-07T12:26:33Z
dc.date.available2026-07-07T12:26:33Z
dc.descriptionTwist-3 distribution amplitudes of the pion and kaon are studied in this paper. We calculate the fist several moments for the twist-3 distribution amplitudes (ϕ_{p,σ}^πand ϕ_{p,σ}^K) of the pion and kaon by applying the QCD sum rules. Our results show that, (i) the first three moments of ϕ_p^K and the first two moments of ϕ_p^πand ϕ_σ^{π,K} of the pion and kaon can be obtained with 30% uncertainty; (ii) the fourth moment of the ϕ_p^πand the second moment of the ϕ_σ^K can be obtained when the uncertainty are relaxed to 35%; (iii) the fourth moment of the ϕ_σ^πcan be obtained only when the uncertainty are relaxed to 40%; (iv) we have m_{0π}^p=1.10\pm 0.08 {\rm GeV} and m_{0K}^p=1.25\pm 0.15 {\rm GeV} after including the α_s-corrections to the perturbative part. These moments will be helpful for constructing the twist-3 wave functions of the pion and kaon.
dc.description18 pages, 10 figures, one more subsection added
dc.identifierhttps://arxiv.org/abs/hep-ph/0501032
dc.identifierhttp://arxiv.org/abs/hep-ph/0501032
dc.identifierEur.Phys.J.C42:271-279,2005
dc.identifierdoi:10.1140/epjc/s2005-02285-x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214912
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTwist-3 distribution amplitudes of the pion and kaon from the QCD sum rules
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