Resonances <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>X</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4140</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> , <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>X</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4160</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> , and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="…
نویسندگان
چکیده
We study the decay of $\Lambda_b\to J/\psi\Lambda\phi$ by taking into account intermediate resonances $X(4140)$, $X(4160)$, and $P_{cs}(4459)$. In addition to peak we also find a bump structure around 4160 MeV followed cusp $D^*_s\bar{D}^*_s$ threshold in $J/\psi\phi$ invariant mass distribution process, which can be associated molecular state $X(4160)$. show that this reaction used confirm existence hidden-charm pentaquark $P_{cs}(4459)$ with strangeness. predict an enhancement close D^*_s\bar{D}^*_s\Lambda$ is reflection $X(4160)$ should not misidentified new resonance. strongly suggest experimentalists further measure these processes, useful clarify nature $X(4140)$ resonances,
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ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.103.034019