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- W2412394863 abstract "The value of the $ensuremath{Lambda}(1405)overline{K}N$ coupling constant ${g}_{ensuremath{Lambda}(1405)overline{K}N}$ is obtained by fitting it to the experimental data on the total cross sections of the ${K}^{ensuremath{-}}pensuremath{rightarrow}{ensuremath{pi}}^{0}{ensuremath{Sigma}}^{0}$ reaction. On the basis of an effective Lagrangian approach and isobar model, we show that the value $|{g}_{ensuremath{Lambda}(1405)overline{K}N}|=1.51ifmmodepmelsetextpmfi{}0.10$ could be extracted from the available experimental data by assuming that the $s$-channel $ensuremath{Lambda}(1405)$ resonance plays a dominant role, whereas, the background contributions from the $s$-channel $ensuremath{Lambda}(1115)$, $t$-channel ${K}^{*}$, and $u$-channel nucleon pole processes are small and can be neglected. However, the $u$-channel nucleon pole diagram may also give an important contribution in the present calculations. After the background contributions are taken into account, the above value of ${g}_{ensuremath{Lambda}(1405)overline{K}N}$ is reduced to $|{g}_{ensuremath{Lambda}(1405)overline{K}N}|=0.77ifmmodepmelsetextpmfi{}0.07$, which is not supported by the previous calculations and the recent CLAS measurements. The theoretical calculations on differential cross sections are also presented, which can be checked by future experiments." @default.
- W2412394863 created "2016-06-24" @default.
- W2412394863 creator A5061917250 @default.
- W2412394863 creator A5062932271 @default.
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- W2412394863 date "2013-07-17" @default.
- W2412394863 modified "2023-09-25" @default.
- W2412394863 title "Coupling constant forΛ(1405)K¯N" @default.
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- W2412394863 doi "https://doi.org/10.1103/physrevc.88.015203" @default.
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