<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mo>±</mml:mo></mml:msup><mml:msup><mml:mi>D</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mo>?</mml:mo></mml:mrow></mml:msup></mml:math> Hadronic Atom as a Key to Revealing 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> Mystery

نویسندگان

چکیده

The $X(3872)$, whose mass coincides with the $D^0\bar D^{*0}$ threshold, is most extended hadron object. Since its discovery in 2003, debates have never stopped regarding internal structure. We propose a new object, $X$ atom, which $D^\pm D^{*\mp}$ composite system positive charge parity and of $(3879.89\pm0.07)$ MeV, formed mainly due to Coulomb force. show that null signal atom can be used put lower limit on binding energy $X(3872)$. From current knowledge $X(3872)$ properties, production rate for relative $B$ decays at colliders should least $1\times10^{-3}$. New insights into will obtained through studying atom.

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ژورنال

عنوان ژورنال: Physical Review Letters

سال: 2021

ISSN: ['1079-7114', '0031-9007', '1092-0145']

DOI: https://doi.org/10.1103/physrevlett.127.012002