Spin partners of the $$B^{(*)}\bar{B}^{(*)}$$ resonances with a different approach than the Breit–Wigner parameterization

نویسندگان

چکیده

In general, resonances are obtained by the Breit-Wigner parameterization. However, it is not entirely appropriate to use this parameterization with near-threshold such as $Z_b(10610)$ and $Z_b(10650)$, does contain threshold effect. To eliminate defect, a recently proposed alternative distribution, Sill, used predict possible heavy quark spin symmetry partners of $Z_b(10650)$. With Sill values $Z_b(10650)$ states, assuming these exotics generate molecular states consisting contact pion exchange potential, examined $S$ $D$-wave contributions. light type resonance approach, all found bound states.

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ژورنال

عنوان ژورنال: The European Physical Journal A

سال: 2023

ISSN: ['1434-6001', '1434-601X']

DOI: https://doi.org/10.1140/epja/s10050-023-01061-0