<p>The decay widths of <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2025_5975_Article_IEq1.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="99" /> </InlineMediaObject> <EquationSource Format="TEX">$V \rightarrow K(\pi ) l \bar{\nu }_l $</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>V</mi> <mo stretchy="false">→</mo> <mi>K</mi> <mrow> <mo stretchy="false">(</mo> <mi>π</mi> <mo stretchy="false">)</mo> </mrow> <mi>l</mi> <msub> <mover accent="true"> <mrow> <mi>ν</mi> </mrow> <mrow> <mo stretchy="false">¯</mo> </mrow> </mover> <mi>l</mi> </msub> </mrow> </math></EquationSource> </InlineEquation> are calculated within the Nambu–Jona-Lasinio model, where <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2025_5975_Article_IEq2.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="115" /> </InlineMediaObject> <EquationSource Format="TEX">$V=K^*, \rho , \omega , \phi $</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>V</mi> <mo>=</mo> <msup> <mi>K</mi> <mo>∗</mo> </msup> <mo>,</mo> <mi>ρ</mi> <mo>,</mo> <mi>ω</mi> <mo>,</mo> <mi>ϕ</mi> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2025_5975_Article_IEq3.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="56" /> </InlineMediaObject> <EquationSource Format="TEX">$l=\mu , e$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>l</mi> <mo>=</mo> <mi>μ</mi> <mo>,</mo> <mi>e</mi> </mrow> </math></EquationSource> </InlineEquation>. The results are obtained using the previously fixed model parameters without introducing any arbitrary parameters. The obtained results are considered as predictions due to the absence of experimental data.</p>

Weak Semileptonic Decays of Vector Mesons in the NJL Model

期刊论文
发表日期：

2025年4月15日

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M. K. Volkov,
A. A. Pivovarov,
K. Nurlan

摘要

The decay widths of $V \rightarrow K(\pi ) l \bar{\nu }_l $ $V \to K (π) l {\bar{ν}}_{l}$ are calculated within the Nambu–Jona-Lasinio model, where $V=K^*, \rho , \omega , \phi $ $V = K^{*}, ρ, ω, ϕ$ and $l=\mu , e$ $l = μ, e$ . The results are obtained using the previously fixed model parameters without introducing any arbitrary parameters. The obtained results are considered as predictions due to the absence of experimental data.