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- W1970060215 abstract "The production and decay of the $X(3872)$ are analyzed under the assumption that the $X$ is a weakly bound molecule of the charm mesons ${D}^{0}{overline{D}}^{*0}$ and ${D}^{*0}{overline{D}}^{0}$. The decays imply that the large ${D}^{0}{overline{D}}^{*0}$ scattering length has an imaginary part. An effective field theory for particles with a large complex scattering length is used to derive factorization formulas for production rates and decay rates of $X$. If a partial width is calculated in a model with a particular value of the binding energy, the factorization formula can be used to extrapolate to other values of the binding energy and to take into account the width of the $X$. The factorization formulas relate the rates for production of $X$ to those for production of ${D}^{0}{overline{D}}^{*0}$ and ${D}^{*0}{overline{D}}^{0}$ near threshold. They also imply that the line shape of $X$ differs significantly from that of a Breit-Wigner resonance." @default.
- W1970060215 created "2016-06-24" @default.
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- W1970060215 date "2005-07-15" @default.
- W1970060215 modified "2023-09-23" @default.
- W1970060215 title "Factorization in the production and decay of the<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>3872</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:math>" @default.
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- W1970060215 doi "https://doi.org/10.1103/physrevd.72.014012" @default.
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