Connection between near the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mo>+</mml:mo></mml:msubsup><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mo>−</mml:mo></mml:msubsup></mml:math> threshold enhancement in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:msubsup><mml:mi>D</mml:mi><…
نویسندگان
چکیده
Focusing on recent measurement of $B^+ \to D_s^+D_s^-K^+$ process given by the LHCb Collaboration, we propose that this newly observed near $D_s^+D_s^-$ threshold enhancement can be due to contribution $\chi_{c0}(2P)$, which is a $P$-wave charmonium below threshold. By performing combined fit measured $D_s^+D_s^-$, $D_s^+K^+$, and $D_s^-K^+$ invariant mass spectra, introducing $\chi_{c0}(2P)$ well reproduce in spectrum. When depicting whole spectrum, contributions from higher $\psi(4230)$ charmoniumlike state $X_0(4140)$ are obvious. In addition, charmed meson $D^*(3^3S_1)$ with around 3015 MeV found important depict spectrum well. Especially, importance node effect spatial wave function revealed, anomaly ratio $\Gamma(X\to D^+D^-)/\Gamma(X\to D_s^+D_s^-)$ indicated explained Finally, our scenario structure resulted enforced.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.106.094037